ADVANCED DATASHEET. IS34MC01GA08/16 3.3V 1Gb SLC NAND Flash Memory Specification and Technical Notes. Page 1

Transcription

1 IS34MCGA8/6 IS34MCGA8/6 3.3V Gb SLC NAND Flash Memory Specification and Technical Notes Page

2 IS34MCGA8 IS34MCGA6 28M x 8bit / 64M x 6bit NAND Flash Memory PRODUCT LIST Part Number VCC Range Organization IS34MCGA8 IS34MCGA6 2.7V ~ 3.6V 2.7V ~ 3.6V 8 6 PKG Type 48-TSOP I, 63-BGA 48-TSOP I, 63-BGA FEATURES EE T Voltage Supply: 3.3V Device: 2.7 V ~ 3.6V Operating Temperature: Industrial: -4 ~ 85 / (64M + 2M) x 6bit / (K + 32) x 6bit Automatic Program and Erase Page Program: (2K + 64) bytes Block Erase: (28K + 4K) bytes / (K + 32) words / (64K + 2K) words (2K + 64) bytes 25us (Max.) 25ns (Min.) Memory Cell: bit/memory Cell / (K + 32) words ED Fast Write Cycle Time Program time: 2us (Typ.) Block Erase time:.5ms (Typ.) TA Page Read Operation Page Size: Random Read: Serial Access: D A SH Organization Memory Cell Array: (28M + 4M) x 8bit Data Register: (2K + 64) x 8bit Command/Address/Data Multiplexed I/O Port C Hardware Data Protection Program/Erase Lockout During Power Transitions N Reliable CMOS Floating Gate Technology VA Endurance: K Program/Erase Cycles (with bit/528 bytes ECC) Data Retention: Years Command Driven Operation D Cache Program Operation for High Performance Program A Copy-Back Operation Unique ID for Copyright Protection Package: 48-Pin TSOP I 63-BGA Pb-Free Packages Page 2

3 IS34MCGA8 IS34MCGA6 GENERAL DESCRIPTION Offered in 28Mx8 / 64Mx6 bits, this device is Gbit with spare 32Mbit capacity. The device is offered in 3.3V V CC. Its NAND cell provides the most cost effective solution for the solid state mass storage market. A program operation can be performed in typical 2us on the 2,2-byte(x8) or,56-word(x6) page and an erase operation can be performed in typical.5ms on a (28K+4K) bytes(x8) or (64K+2K) words(x6) block. Data in the data register can be read out at 25ns cycle time per byte(x8) or word(x6). The I/O pins serve as the ports for address and data input/output as well as command input. The on-chip write controller automates all program and erase functions including pulse repetition, where required, and internal verification and margining of data. Even the writeintensive systems can take advantage of this device s extended reliability of K program/erase cycles by providing ECC (Error Correcting Code) with real time mapping-out algorithm. This device is an optimum solution for large nonvolatile storage applications such as solid state file storage and other portable applications requiring non-volatility. PIN ASSIGNMENT (TSOP I) Page 3

4 IS34MCGA8/6 Pin-Out Diagram of x8 63-BGA Device (Top View, Balls Down) Pin-Out Diagram of x6 63-BGA Device (Top View, Balls Down) Copyright 2 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. 5/7/23 Integrated Silicon Solution, Inc Page 4

5 IS34MCGA8 IS34MCGA6 PIN DISCRIPTION Pin Name I/O ~ I/O7 I/O8 ~ I/O5 (2) CLE ALE CE# RE# WE# WP# R/B# V CC V SS N.C. Pin Function DATA INPUTS/OUTPUTS The I/O pins are used to input command, address and data, and to output data during read operations. The I/O pins float to Hi-Z when the chip is deselected or when the outputs are disabled. DATA INPUTS/OUTPUTS The I/O pins are used to input command, address and data, and to output data during read operations. The I/O pins float to Hi-Z when the chip is deselected or when the outputs are disabled. COMMAND LATCH ENABLE The CLE input controls the activating path for commands sent to the command register. When active high, commands are latched into the command register through the I/O ports on the rising edge of the WE# signal. ADDRESS LATCH ENABLE The ALE input controls the activating path for address to the internal address registers. Addresses are latched on the rising edge of WE# with ALE high. CHIP ENABLE The CE# input is the device selection control. When the device is in the Busy state, CE# high is ignored, and the device does not return to standby mode. READ ENABLE The RE# input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid t REA after the falling edge of RE# which also increments the internal column address counter by one. WRITE ENABLE The WE# input controls writes to the I/O port. Commands, address and data are latched on the rising edge of the WE# pulse. WRITE PROTECT The WP# pin provides inadvertent program/erase protection during power transitions. The internal high voltage generator is reset when the WP# pin is active low. READY/BUSY OUTPUT The R/B# output indicates the status of the device operation. When low, it indicates that a program, erase or random read operation is in process and returns to high state upon completion. It is an open drain output and does not float to Hi-Z condition when the chip is deselected or when outputs are disabled. POWER V CC is the power supply for device. GROUND NO CONNECTION Lead is not internally connected. Note:. Connect all V CC and V SS pins of each device to common power supply outputs. Do not leave V CC or V SS disconnected. 2. I/O8 ~ I/O5 are only defined within IS34MCGA6 and must keep Low while input address or command cycle. Page 5

6 IS34MCGA8 IS34MCGA6 FUNCTION BLOCK DIAGRAM(x8) ARRAY ORGANIZATION(x8) Address Cycle Map(x8) Note:. Column Address: Starting Address of the Register. 2. *L must be set to Low 3. *The device ignores any additional input of address cycles than required. Page 6

7 IS34MCGA8 IS34MCGA6 FUNCTION BLOCK DIAGRAM(x6) ARRAY ORGANIZATION(x6) Address Cycle Map(x6) Note:. Column Address: Starting Address of the Register. 2. *L must be set to Low 3. *The device ignores any additional input of address cycles than required. Page 7

8 IS34MCGA8 IS34MCGA6 Product Introduction This device is a,56mbits (,7,296,256 bits) memory organized as 65,539 rows (pages) by 2,2-byte(x8) or,56-word(x6) columns. Spare 64-byte(x8) or 32-word(x6) columns are located from column address of 2,48 to 2,(x8) or,24 to,55(x6). A 2,2-byte(x8) or,56-word(x6) data register and 2,2-byte(x8) or,56-word(x6) cache register are serially connected to each other. Those serially connected registers are connected to memory cell arrays for accommodating data transfer between the I/O buffers and memory cells during page read and page program operations. The memory array is made up of 32 cells that are serially connected to form a NAND structure. Each of the 32 cells resides in a different page. A block consists of two NAND structured strings. A NAND structure consists of 32 cells. Total,8,344 NAND cells reside in a block. The program and read operations are executed on a page basis, while the erase operation is executed on a block basis. The memory array consists of,24 separately erasable 28K-byte(x8) or 64K-word(x6) blocks. It indicates that the bit by bit erase operation is prohibited on the device. This device uses addresses multiplexed scheme. This scheme dramatically reduces pin counts and allows systems upgrades to future densities by maintaining consistency in system board design. Command, address and data are all written through I/O's by bringing WE# to low while CE# is low. Those are latched on the rising edge of WE#. Command Latch Enable (CLE) and Address Latch Enable (ALE) are used to multiplex command and address respectively, via the I/O pins. Some commands require one bus cycle. For example, Reset Command, Status Read Command, etc require just one cycle bus. Some other commands, like page read and block erase and page program, require two cycles: one cycle for setup and the other cycle for execution. The total physical space requires 28(x8) or 27(x6) addresses, thereby requiring four cycles for addressing: 2 cycle of column address, 2 cycles of row address, in that order. Page Read and Page Program need the same four address cycles following the required command input. In Block Erase operation, however, only the 2 cycles of row address are used. Device operations are selected by writing specific commands into the command register. Below table defines the specific commands of this device. The device provides cache program in a block. It is possible to write data into the cache registers while data stored in data registers are being programmed into memory cells in cache program mode. The program performance may be dramatically improved by cache program when there are lots of pages of data to be programmed. In addition to the enhanced architecture and interface, the device incorporates copy-back program feature from one page to another page without need for transporting the data to and from the external buffer memory. Since the time-consuming serial access and datainput cycles are removed, system performance for solid-state disk application is significantly increased. Command Set Function st Cycle 2 nd Cycle Acceptable Command during Busy Read h 3h Read for Copy Back h 35h Read ID 9h - Reset FFh - O Page Program 8h h Cache Program 8h 5h Copy-Back Program 85h h Block Erase 6h Dh Random Data Input () 85h - Random Data Output () 5h Eh Read Status 7h - O Note:. Random Data Input/ Output can be executed in a page. Caution: Any undefined command inputs are prohibited except for above command set of above table. Page 8

9 IS34MCGA8 IS34MCGA6 ABSOLUTE MAIMUM RATINGS Parameter Symbol Rating Unit Voltage on any pin relative to V SS V CC -.6 to +4.6 V V IN V I/O -.6 to V CC +.3(<4.6) Temperature Under Bias Industrial -4 to +25 Storage Temperature Short Circuit Current I OS 5 ma Note:. Minimum DC voltage is -.6V on input/output pins. During transitions, this level may undershoot to -2.V for periods <3ns. Maximum DC voltage on input/output pins is V CC +.3V which, during transitions, may overshoot to V CC +2.V for periods <2ns. 2. Permanent device damage may occur if ABSOLUTE MAIMUM RATINGS are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for industrial periods may affect reliability. RECOMMENDED OPERATING CONDITIONS (Voltage reference to GND Industrial: TA=-4 to 85 ) Parameter Symbol Min. Typ. Max. Unit Supply Voltage V CC V Supply Voltage V SS V DC AND OPERATION CHARACTERISTICS (Recommended operating conditions otherwise noted) Parameter Symbol Test Conditions Min. Typ. Max. Unit Operating Sequential Read I CC t RC =25ns, CE#=V IL, I OUT =ma Current Program I CC ma Erase I CC Stand-by Current(TTL) I SB CE#=V IH, WP#=V/V CC - - ma Stand-by Current(CMOS) I SB 2 CE#=V CC -.2, WP#=V/V CC - 5 Input Leakage Current I LI V IN = to V CC (max) - - ± ua Output Leakage Current I LO V OUT = to V CC (max) - - ± Input High Voltage V IH -.8xV CC - V CC +.3 V Input Low Voltage, All inputs V IL xV CC Output High Voltage Level V OH I OH =-4uA Output Low Voltage Level V OL I OL =2.mA Output Low Current(R/B) I OL (R/B#) V OL =.4V 8 - ma Note:. V IL can undershoot to -.4V and V IH can overshoot to V CC +.4V for durations of 2ns or less. 2. Typical value are measured at V CC =3.3V, TA=25. And not % tested. VALID BLOCK T BIAS Industrial T STG -65 to +5 IS34MCGA8/6 Parameter Symbol Min. Typ. Max. Unit IS34MCGA N VB,4 -,24 Blocks Note:. The device may include initial invalid blocks when first shipped. Additional invalid blocks may develop while being used. The number of valid blocks is presented as first shipped. Invalid blocks are defined as blocks that contain one or more bad bits which cause status failure during program and erase operation. Do not erase or program factory-marked bad blocks. Refer to the attached technical notes for appropriate management of initial invalid blocks. 2. The st block, which is placed on h block address, is guaranteed to be a valid block up to K program/erase cycles with bit/528 bytes ECC. Page 9

10 IS34MCGA8 IS34MCGA6 AC TEST CONDITION Industrial: TA=-4 to 85, VCC=2.7V~3.6V, unless otherwise noted) IS34MCGA8/6 Input Pulse Levels Input Rise and Fall Times Input and Output Timing Levels Output Load V to VCC 5 ns VCC /2 TTL Gate and CL=5pF T CAPACITANCE EE (TA=25, VCC=3.3V, f=.mhz) Item Symbol Test Condition Min. Max. Unit Input/ Output Capacitance Input Capacitance CI/O CIN VIL=V VIN=V pf pf Note: Capacitance is periodically sampled and not % tested. SH. MODE SELECTION ALE CE# WE# RE# WP# Mode H L H L L L L H L H L L () L L L L L L H Rising Rising Rising Rising Rising H H H H H H Falling H H H H H H L V/VCC(2) Read Mode Write Mode D A Data Input Data Output During Read (Busy) During Program (Busy) During Erase (Busy) Write Protect Stand-by ED Note:. 2. Command Input Address Input (4 clock) Command Input Address Input (4 clock) TA CLE can be VIL or VIH. WP# should be biased to CMOS high or CMOS low for stand-by. Parameter C Program / Erase Characteristics VA N Program Time Dummy Busy Time for Cache Program Number of Partial Program Cycles in the Same Page Block Erase Time Symbol Min. Typ. Max. Unit tprog() tcbsy(2) NOP us us cycle tbers -.5 ms Note: Typical program time is defined as the time within which more than 5% of the whole pages are programmed at 3.3V VCC and 25 temperature. Max. time of tcbsy depends on timing between internal program completion and data in. D. A 2. Page

11 IS34MCGA8 IS34MCGA6 AC Timing Characteristics for Command / Address / Data Input Parameter Symbol Min. Max. Unit CLE Setup Time () t CLS 2 - ns CLE Hold Time t CLH 5 - ns CE# Setup Time t CS 2 - ns CE# Hold Time t CH 5 - ns WE# Pulse Width t WP 2 - ns ALE Setup Time () t ALS 2 - ns ALE Hold Time t ALH 5 - ns Data Setup Time () t DS 2 - ns Data Hold Time t DH 5 - ns Write Cycle Time t WC 25 - ns WE# High Hold Time t WH - ns ALE to Data Loading Time (2) t ADL - ns Note :. The transition of the corresponding control pins must occur only once while WE# is held low. 2. t ADL is the time from the WE# rising edge of final address cycle to the WE# rising edge of first data cycle. AC Characteristics for Operation Parameter Symbol Min. Max. Unit Data Transfer from Cell to Register t R - 25 us ALE to RE# Delay t AR - ns CLE to RE# Delay t CLR - ns Ready to RE# Low t RR 2 - ns RE# Pulse Width t RP 2 - ns WE# High to Busy t WB - ns Read Cycle Time t RC 25 - ns RE# Access Time t REA - 2 ns CE# Access Time t CEA - 25 ns RE# High to Output Hi-Z t RHZ - ns CE# High to Output Hi-Z t CHZ - 3 ns CE# High to ALE or CLE Don t Care t CSD - ns RE# High to Output Hold t RHOH 5 - ns RE# Low to Output Hold t RLOH 5 - ns CE# High to Output Hold t COH 5 - ns RE# High Hold Time t REH - ns Output Hi-Z to RE# Low t IR - ns RE# High to WE# Low t RHW - ns WE# High to RE# Low t WHR 6 - ns Device Resetting Read t RST - 5 () us Time during... Program - () us Erase - 5 () us Ready - 5 () us Note:. If reset command (FFh) is written at Ready state, the device goes into Busy for maximum 5us. Page

12 IS34MCGA8 IS34MCGA6 NAND Flash Technical Notes Initial Invalid Block(s) Initial invalid blocks are defined as blocks that contain one or more initial invalid bits whose reliability is not guaranteed by PFC. Information regarding the initial invalid block(s) is so called as the initial invalid block information. Devices with initial invalid block(s) have the same quality level as devices with all valid blocks and have the same AC and DC characteristics. An initial invalid block(s) does not affect the performance of valid block(s) because it is isolated from the bit line and the common source line by a select transistor. The system design must be able to mask out the initial invalid block(s) via address mapping. The st block, which is placed on h block address, is guaranteed to be a valid block up to K program/erase cycles with bit/528 bytes ECC. Identifying Initial Invalid Block(s) All device locations are erased (FFh) except locations where the initial invalid block(s) information is written prior to shipping. The initial invalid block(s) status is defined by the st byte(x8) or st word(x6) in the spare area. PFC makes sure that either the st or 2nd page of every initial invalid block has non-ffh data at the st byte(x8) or st word(x6) column address in the spare area. Since the initial invalid block information is also erasable in most cases, it is impossible to recover the information once it has been erased. Therefore, the system must be able to recognize the initial invalid block(s) based on the initial invalid block information and create the initial invalid block table via the following suggested flow chart. Any intentional erasure of the initial invalid block information is prohibited. Error in write or read operation Within its life time, the additional invalid blocks may develop with NAND Flash memory. Refer to the qualification report for the block failure rate. The following possible failure modes should be considered to implement a highly reliable system. In the case of status read failure after erase or program, block replacement should be done. Because program status fail during a page program does not affect the data of the other pages in the same block, block replacement can be executed with a page-sized buffer by finding an erased empty block and reprogramming the current target data and copying the rest of the replaced block. In case of Read, ECC must be employed. To improve the efficiency of memory space, it is recommended that the read failure due to single bit error should be reclaimed by ECC without any block replacement. The block failure rate in the qualification report does not include those reclaimed blocks. Failure Detection and Countermeasure sequence Write Erase Failure Status Read after Erase Block Replacement Program Failure Status Read after Program Block Replacement Read Single Bit Failure Verify ECC ECC Correction ECC:. Error Correcting Code --> Hamming Code etc. 2. Example) bit correction & 2bits detection Page 2

13 IS34MCGA8 IS34MCGA6 Program Flow Chart Erase Flow Chart Start If program operation results in an error, map out the block including the page in error and copy the target data to another block Program Error No CMD 8h Write Address Write Data CMD h Read Status Register I/O6 =? No or R/B# =? Yes I/O =? Yes Program Completed Read Flow Chart Page 3

14 IS34MCGA8 IS34MCGA6 Block Replacement Block A n th page st ~ (n-) th n th page An error occurs. Block B An error occurs. st ~ (n-) th 2 Buffer memory of the controller * Step When an error happens in the nth page of the Block 'A' during erase or program operation. * Step 2 Copy the data in the st ~ (n-)th page to the same location of another free block. (Block 'B') * Step 3 Then, copy the nth page data of the Block 'A' in the buffer memory to the nth page of the Block 'B' * Step 4 Do not erase or program to Block 'A' by creating an 'invalid block' table or other appropriate scheme. Addressing for program operation Within a block, the pages must be programmed consecutively from the LSB(Least Significant Bit) page of the block to MSB(Most Significant Bit) pages of the block. Random page address programming is prohibited. Page 4

15 IS34MCGA8 IS34MCGA6 System Interface Using CE# don t-care For an easier system interface, CE# may be inactive during the data-loading or sequential data-reading as shown below. The internal 2,2 bytes(x8) or,56 words(x6) page registers are utilized as separate buffers for this operation and the system design gets more flexible. In addition, for voice or audio applications which use slow cycle time on the order of u-seconds, de-activating CE# during the data-loading and reading would provide significant savings in power consumption. Below are the figures of Program Operation and Read Operation with CE# don t-care respectively. Page 5

16 IS34MCGA8 IS34MCGA6 Address Information I/O DATA ADDRESS Parameter I/Ox Data In/Out Col. Add Col. Add2 Row Add Row Add2 IS34MCGA8 I/O~7 ~ 22 bytes A ~ A 7 A 8 ~ A A 2 ~ A 9 A 2 ~ A 27 IS34MCGA6 I/O~5 ~ 56 words A ~ A 7 A 8 ~ A A ~ A 8 A 9 ~ A 26 Command Latch Cycle Address Latch Cycle Page 6

17 IS34MCGA8 IS34MCGA6 Input Data Latch Cycle Serial access Cycle after Read (CLE=L,ALE=L,WE#=H) Note:. Transition is measured at ±2mV from steady state voltage with load. 2. This parameter is sampled and not % tested. 3. t RLOH is valid when frequency is higher than 33MHz. 4. t RHOH starts to be valid when frequency is lower than 33MHz. Page 7

18 IS34MCGA8 IS34MCGA6 Status Read Cycle Page 8

19 IS34MCGA8 IS34MCGA6 READ Operation READ Operation (Intercepted by CE#) Random Data Output In a Page Page 9

20 IS34MCGA8 IS34MCGA6 Page Program Operation Notes:. t ADL is the time from WE# rising edge of final address cycle to the WE# rising edge of first data cycle. Page Program Operation with Random Data Input Notes:. t ADL is the time from WE# rising edge of final address cycle to the WE# rising edge of first data cycle. Page 2

21 IS34MCGA8 IS34MCGA6 Copy-Back Program Operation with Random Data Input Notes:. t ADL is the time from WE# rising edge of final address cycle to the WE# rising edge of first data cycle. Cache Program Operation (available only within a block) Page 2

22 IS34MCGA8 IS34MCGA6 Block Erase Operation (Erase One Block) Read ID Operation ID Definition Table ID Access command = 9h Option Maker Code Device Code 3 rd Cycle 4 th Cycle 5 th Cycle x8 92h Fh 8h 95h 4h x6 92h Ch 8h D5h 4h st Byte 2 nd Byte 3 rd Byte 4 th Byte 5 th Byte Note Description Maker Code Device Code Internal Chip Number, Cell Type, Number of Simultaneously Programmed Pages, Etc. Page Size, Block Size, Redundant Area Size, Organization, Serial Access Minimum Plane Number, Plane Size 3rd ID Data Description I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O I/O Internal Chip Number Cell Type 2 Level Cell 4 Level Cell 8 Level Cell 6 Level Cell Number of Simultaneously Programmed Page Interleave Program Not Support Page 22

23 IS34MCGA8 IS34MCGA6 Between multiple chips Support Cache Program Not Support Support 4th ID Data Page Size (w/o redundant area) Block Size (w/o redundant area) Redundant Area Size (byte/52byte) Organization Serial Access Minimum Description I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O I/O KB 2KB 4KB 8KB 64KB 28KB 256KB 52KB 8 6 x8 x6 5ns/3ns 25ns Reserved Reserved 5th ID Data Description I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O I/O Plane Number Plane Size (w/o redundant Area) 64Mb 28Mb 256Mb 52Mb Gb 2Gb 4Gb 8Gb Reserved Page 23

24 IS34MCGA8 IS34MCGA6 DEVICE OPERATION Page Read Page read is initiated by writing h-3h to the command register along with four address cycles. After initial power up, h command is latched. Therefore only four address cycles and 3h command initiates that operation after initial power up. The 2,2 bytes(x8) or,56 words(x6) of data within the selected page are transferred to the data registers in less than t R. The system controller can detect the completion of this data transfer (t R ) by analyzing the output of R/B# pin. Once the data in a page is loaded into the data registers, they may be read out in 25ns cycle time by sequentially pulsing RE#. The repetitive high to low transitions of the RE# clock make the device output the data starting from the selected column address up to the last column address. The device may output random data in a page instead of the consecutive sequential data by writing random data output command. The column address of next data, which is going to be out, may be changed to the address which follows random data output command. Random data output can be operated multiple times regardless of how many times it is done in a page. Read Operation CE# CLE ALE WE# RE# R/B# I/Ox h Address (4cycles) Col. Add.,2 & Row Add.,2 3h Data Field tr (h Command) Spare Field Data Output( Serial Access) Page 24

25 IS34MCGA8 IS34MCGA6 Random Data Output In a Page Page 25

26 IS34MCGA8 IS34MCGA6 Page Program The device is programmed basically on a page basis, but it does allow multiple partial page programming of a word or consecutive bytes up to 2,2(x8) or words up to,56(x6), in a single page program cycle. The number of consecutive partial page programming operation within the same page without an intervening erase operation must not exceed 4 times for a single page. The addressing should be done in sequential order in a block. A page program cycle consists of a serial data loading period in which up to 2,2 bytes(x8) or,56 words(x6) of data may be loaded into the data register, followed by a non-volatile programming period where the loaded data is programmed into the appropriate cell. The serial data loading period begins by inputting the Serial Data Input command (8h), followed by the four cycle address inputs and then serial data loading. The words other than those to be programmed do not need to be loaded. The device supports random data input in a page. The column address for the next data, which will be entered, may be changed to the address which follows random data input command (85h). Random data input may be operated multiple times regardless of how many times it is done in a page. The Page Program confirm command (h) initiates the programming process. Writing h alone without previously entering the serial data will not initiate the programming process. The internal write state controller automatically executes the algorithms and timings necessary for program and verify, thereby freeing the system controller for other tasks. Once the program process starts, the Read Status Register command may be entered, with RE# and CE# low, to read the status register. The system controller can detect the completion of a program cycle by monitoring the R/B output, or the Status bit (I/O6) of the Status Register. Only the Read Status command and Reset command are valid while programming is in progress. When the Page Program is complete, the Write Status Bit (I/O) may be checked. The internal write verify detects only errors for ""s that are not successfully programmed to ""s. The command register remains in Read Status command mode until another valid command is written to the command register. Program & Read Status Operation Random Data Input In a page Page 26

27 IS34MCGA8 IS34MCGA6 Cache Program Cache Program is an extension of Page Program, which is executed with 2,2 byte(x8) or,56 words(x6) data registers, and is available only within a block. Since the device has page of cache memory, serial data input may be executed while data stored in data register are programmed into memory cell. After writing the first set of data up to 2,2 bytes(x8) or,56 words(x6) into the selected cache registers, Cache Program command (5h) instead of actual Page Program (h) is inputted to make cache registers free and to start internal program operation. To transfer data from cache registers to data registers, the device remains in Busy state for a short period of time (t CBSY ) and has its cache registers ready for the next data-input while the internal programming gets started with the data loaded into data registers. Read Status command (7h) may be issued to find out when cache registers become ready by polling the Cache-Busy status bit (I/O6). Pass/fail status of only the previous page is available upon the return to Ready state. When the next set of data is inputted with the Cache Program command, t CBSY is affected by the progress of pending internal programming. The programming of the cache registers is initiated only when the pending program cycle is finished and the data registers are available for the transfer of data from cache registers. The status bit (I/O5) for internal Ready/Busy may be polled to identity the completion of internal programming. If the system monitors the progress of programming only with R/B#, the last page of the target programming sequence must be programmed with actual Page Program command (h). Cache Program (available only within a block) Note:. Since programming the last page does not employ caching, the program time has to be that of Page Program. However, if the previous program cycle with the cache data has not finished, the actual program cycle of the last page is initiated only after completion of the previous cycle, which can be expressed as the following formula. 2. t PROG = Program time for the last page + Program time for the (last-)th page (Program command cycle time + Last page data loading time) Page 27

28 IS34MCGA8 IS34MCGA6 Copy-Back Program Copy-Back program with Read for Copy-Back is configured to quickly and efficiently rewrite data store in one page. The benefit is especially obvious when a portion of a block is updated and the rest of the block also needs to be copied to the newly assigned free block. Copy-Back operation is a sequential execution of Read for Copy-Back and of copy-back program with the destination page address. A read operation with 35h command and the address of the source page moves the whole 2,2-byte(x8) or,56-word(x6) data into the internal data buffer. A bit error is checked by sequential reading the data output. In the case where there is no bit error, the data do not need to be reloaded. Therefore Copy-Back program operation is initiated by issuing Page-Copy Data-Input command (85h) with destination page address. Actual programming operation begins after Program Confirm command (h) is issued. Once the program process starts, the Read Status Register command (7h) may be entered to read the status register. The system controller can detect the completion of a program cycle by monitoring the R/B# output, or the Status bit (I/O6) of the Status Register. When the Copy-Back Program is completed, the Write Status Bit (I/O) may be checked. The command register remains in Read Status command mode until another valid command is written to the command register. During coy-back program, data modification is possible using random data input command (85h). Page Copy-Back Program Operation Note:. This operation is allowed only within the same memory plane. 2. It s prohibited to operate Copy-Back program from an odd address page (source page) to an even address (target page) or from an even address page (source page) to an odd address page (target page). Therefore, the Copy-Back program is permitted just between odd address pages or even address pages. Page Copy-Back Program Operation with Random Data Input Page 28

29 IS34MCGA8 IS34MCGA6 Block Erase The Erase operation is done on a block basis. Block address loading is accomplished in two cycles initiated by an Erase Setup command (6h). Only address A 8 to A 27 (x8) or A 7 to A 26 (x6) is valid while A 2 to A 7 (x8) or A to A 6 (x6) is ignored. The Erase Confirm command (Dh) following the block address loading initiates the internal erasing process. This two-step sequence of setup followed by execution command ensures that memory contents are not accidentally erased due to external noise conditions. At the rising edge of WE# after the erase confirm command input, the internal write controller handles erase and erase-verify. When the erase operation is completed, the Write Status Bit (I/O) may be checked. Block Erase Operation Page 29

30 IS34MCGA8 IS34MCGA6 Read Status The device contains a Status Register which may be read to find out whether program or erase operation is completed, and whether the program or erase operation is completed successfully. After writing 7h command to the command register, a read cycle outputs the content of the Status Register to the I/O pins on the falling edge of CE# or RE#, whichever occurs last. This two line control allows the system to poll the progress of each device in multiple memory connections even when R/B# pins are common-wired. RE# or CE# does not need to be toggled for updated status. Refer to below table for specific Status Register definitions. The command register remains in Status Read mode until further commands are issued to it. Therefore, if the status register is read during a random read cycle, the read command (h) should be given before starting read cycles. Status Register Definition for 7h Command I/O Page Block Cache Read Definition I/O Pass/Fail Pass/Fail Pass/Fail(N) Not Use Pass: Fail: I/O Not Use Not Use Pass/Fail(N-) Not Use Pass: Fail: I/O2 Not Use Not Use Not Use Not Use Don t cared I/O3 Not Use Not Use Not Use Not Use Don t cared I/O4 Not Use Not Use Not Use Not Use Don t cared I/O5 Ready/Busy Ready/Busy True Ready/Busy Busy: Ready: Ready/Busy I/O6 Ready/Busy Ready/Busy Ready/Busy Ready/Busy Busy: Ready: I/O7 Write Protect Write Protect Write Protect Write Protect Protected: Not Protected: Note:. True Ready/Busy represents internal program operation status which is being executed in cache program mode. 2. I/Os defined Not Use are recommended to be masked out when Read Status is being executed. Page 3

31 IS34MCGA8 IS34MCGA6 Read ID The device contains a product identification mode, initiated by writing 9h to the command register, followed by an address input of h. Four read cycles sequentially output the manufacturer code (92h), and the device code and 3rd, 4th and 5th cycle ID respectively. The command register remains in Read ID mode until further commands are issued to it. Read ID Operation ID Definition Table ID Access command = 9h Option Maker Code Device Code 3 rd Cycle 4 th Cycle 5 th Cycle x8 92h Fh 8h 95h 4h x6 92h Ch 8h D5h 4h st Byte 2 nd Byte 3 rd Byte 4 th Byte 5 th Byte Note Description Maker Code Device Code Internal Chip Number, Cell Type, Number of Simultaneously Programmed Pages, Etc. Page Size, Block Size, Redundant Area Size, Organization, Serial Access Minimum Plane Number, Plane Size Page 3

32 IS34MCGA8 IS34MCGA6 RESET The device offers a reset feature, executed by writing FFh to the command register. When the device is in busy state during random read, program or erase mode, the reset operation will abort these operations. The contents of memory cells being altered are no longer valid, as the data will be partially programmed or erased. The command register is cleared to wait for the next command, and the Status Register is cleared to value Ch when WP# is high. If the device is already in reset state a new reset command will be accepted by the command register. The R/B# pin changes to low for t RST after the Reset command is written. Refer to Figure below. Device Status After Power-up After Reset Operation mode h Command is latched Waiting for next command Page 32

33 IS34MCGA8 IS34MCGA6 READY/BUSY# The device has an R/B# output that provides a hardware method of indicating the completion of a page program, erase and random read completion. The R/B# pin is normally high but transitions to low after program or erase command is written to the command register or random read is started after address loading. It returns to high when the internal controller has finished the operation. The pin is an open-drain driver thereby allowing two or more R/B# outputs to be Or-tied. R P vs t RHOH vs C L R P value guidance where I L is the sum of the input currents of all devices tied to the R/B# pin. R P (max) is determined by maximum permissible limit of tr Page 33

34 IS34MCGA8 IS34MCGA6 Data Protection & Power-up sequence The device is designed to offer protection from any involuntary program/erase during power-transitions. An internal voltage detector disables all functions whenever V CC is below about 2V. WP# pin provides hardware protection and is recommended to be kept at V IL during power-up and power-down. A recovery time of minimum us is required before internal circuit gets ready for any command sequences as below. The two step command sequence for program/erase provides additional software protection. AC Waveforms for Power Transition Note:. During the initialization, the device consumes a maximum current of I CC. WP# AC Timing guide Enable WP# during erase and program busy is prohibited. The erase and program operations are enabled and disable as follows. Program enable mode: Program disable mode: Page 34

35 IS34MCGA8 IS34MCGA6 Erase enable mode: Erase disable mode: Page 35

36 48-TSOP dimensions 63-BGA (x9 mm) dimensions TSOP 48-Lead Package Dimensions BGA 63-Ball Package Dimensions Page 36

37 BGA 63-Ball Package Dimensions Page 37

38 Part Number Vcc Range Organization Package IS34MCGA8-TSLI 2.7V-3.6V x8 48-TSOP IS34MCGA8-BSLI 2.7V-3.6V x8 63-BGA (9xmm) - Call factory IS34MCGA6-TSLI 2.7V-3.6V x6 48-TSOP IS34MCGA6-BSLI 2.7V-3.6V x6 63-BGA (9xmm) - Call factory Page 38