DS89C450-KIT# DS89C450 Evaluation Kit

Transcription

1 -0; Rev /0 DSC0-KIT# DSC0 Evaluation Kit GENERAL DESCRIPTION The DSC0 evaluation kit (EV kit) is a proven platform to conveniently evaluate the capabilities of the ultra-high-speed flash microcontroller family. The kit contains the DSC0 in a DIP-0 socket, kb of SRAM mapped through a preprogrammed CPLD, a power-supply regulator, two DB serial connectors, and switches and LEDs to control and display board operation. With the addition of a power supply and an RS- cable connected to a personal computer, the EV kit provides a completely functional system ideal for application development and debug. The DSC0 EV kit can also be used as a programming and development platform for the DS000(T). Quick-start instructions and sample programs for the DS000(T) can be obtained from the DS000 directory on the software tool disk, or from Maxim technical support at EVALUATION KIT CONTENTS DSC0 Evaluation Kit Board with Processor and.mhz Crystal Installed 0-Based Microcontroller Software Eval Disk FEATURES Easily Load Code Using Bootstrap Loader and Serial 0 Port (DB, J) Two DB RS- Serial Connectors DB Serial Cable Two Internal Serial Ports On-Board Power Supply Regulator kb of On-Board Program + Data RAM Preprogrammed Xilinx CPLD Handles Address Multiplexing and RAM Mapping LED Display of Port 0 Levels Pushbutton Switches for Reset and Interrupt Generation Prototyping Area Board Schematics Included to Provide a Convenient Reference Design ORDERING INFORMATION PART TEMP RANGE DIMENSIONS DSC0-KIT# Room Approx. cm x 0cm #Denotes a RoHS-compliant device that may include lead(pb) that is exempt under the RoHS requirements. Figure. DSC0 Evaluation Kit Board of

2 DSC0 Evaluation Kit COMPONENT LIST DESIGNATION QTY DESCRIPTION SUPPLIER PART C, C 00 F, V radial capacitors Panasonic ECA-EM0 C, C F, 0V tantalum capacitors Panasonic ECS-TAXR C, C, C, C C 0. F capacitors (00) Generic C, C pf capacitors Panasonic ECJ-VCH0J J mm male power-barrel connector CUI Inc. PJ-00A J, J DB RS- female connectors Amp/Tyco - J Micro header pins (unpopulated) J Spare input header pins (unpopulated) JP, JP Solder pad jumpers (closed) R, R.k resistors (00) Generic R, R 0k resistors (00) Generic R 0 resistor (00) Generic RN, RN, RN 0 resistor pack () CTS 00 RN.k resistor pack () CTS 00 SW, SW, SW DIP switches x C&K SDA0HBD SW, SW SPST pushbutton Panasonic EVQ-PAC0M U 0mA linear regulator (V) Maxim MAXESA+ U 0mA linear regulator (.V) Maxim MAXESA+ U DSC0 microcontroller (0-pin PDIP) Maxim DSC0-MNL+ U Quad buffer Fairchild AC U Preprogrammed -pin CPLD Xilinx XCXL- 0PCGC U k x asynchronous cache SRAM Cypress CYC00D-0VXI U Unpopulated U RS- transceiver ( Tx, Rx) Maxim MAXACWP+ U Inverting octal buffer Fairchild AC0 U0 LED x0 display (Port + power) Lumex SSA-LXB0IW-GF/LP Y.MHz crystal (socketed) Citizen HCUS.MABJ of

3 DSC0 Evaluation Kit TYPICAL OPERATING CIRCUIT Figure. DSC0 Evaluation Kit Board Layout DETAILED DESCRIPTION The DSC0 EV kit must be used with the DSC0/DSC0 ultra-high-speed flash microcontrollers IC data sheet and the Ultra-High-Speed Flash Microcontroller User s Guide ( A complete description of the bootstrap loader commands and functions is located in Section of the Ultra-High-Speed Flash Microcontroller User s Guide. The DSC0 EV kit and all of its connectors are defined in the schematics provided in the accompanying documentation disk. However, a short description of the major components of the board follows. Power Supplies The EV kit accepts a DC input supply at J. The supply should be a V to V DC supply, center post positive, with at least 00mA capacity. The exact DC input value of the supply is not important, as the on-board linear MAX and MAX regulators produce fixed V and.v for use by the kit circuitry. While it is possible to supply up to V at J (the maximum input voltage of the MAX and MAX), doing so results in a large amount of heat dissipation from the board. A small heatsink plane is provided on the backside of the board beneath the linear regulators, but this may be inadequate at input voltages above V. If U and U are hot, lower the DC input voltage at J. Note that many unregulated DC wall plug-in supplies may provide an output level much higher than their labeled output value if they are lightly loaded. of

4 DSC0 Evaluation Kit Serial Ports Both serial ports of the DSC0 (Serial Port 0 and Serial Port ) are translated to RS- levels and brought out to DB connectors at J and J. Serial Port 0 (J) must always be used when communicating with the bootloader. Memory The external memory of the DSC0 on this EV kit is designed to operate with the address and data bus multiplexed on P0 and P. A kb x SRAM is installed, which is accessed as both program and data memory by this multiplexed bus. Note that as the total memory space of the DSC0 is only kb of program memory and K of data memory, port pin memory banking must be used to access the entire kb-memory space. CPLD The CPLD device on the EV kit board is preprogrammed to perform several functions. Address latching of the low bits of the external memory address from port P0. Mapping together program and data memory. Performing port pin memory banking (optional). The RTL code preprogrammed into the CPLD is as follows. module Eval(AD, nrd, ALE, npsen, CFG0, CFG, SW_IN, P, A, A, A, noe, SW_OUT); input [:0] AD; // Multiplexed low-order address and data from micro input nrd; // Data memory read enable from micro input ALE; // Address latch enable from micro input npsen; // Program memory read enable from micro input CFG0; // Configuration input zero (from DIP switch) input CFG; // Configuration input one (from DIP switch) input SW_IN; // Interrupt switch input (from pushbutton) inout [:0] P; // Port from micro output [:0] A; // Demultiplexed low-order address to RAM output A; // Address line to RAM output A; // Address line to RAM output noe; // Output enable to RAM output SW_OUT; // Interrupt switch output (to micro) reg [:0] A; ALE) begin A <= AD; end assign A = (CFG0 == 0)? P[0] : 'b0; assign A = (CFG0 == 0)? P[] : 'b0; assign P[0] = (CFG == 0)? SW_IN : 'bz; assign P[] = (CFG == 0)? SW_IN : 'bz; assign P[] = (CFG == 0)? SW_IN : 'bz; assign P[] = (CFG == 0)? SW_IN : 'bz; assign P[] = (CFG == 0)? ~SW_IN : 'bz; assign P[] = (CFG == 0)? ~SW_IN : 'bz; assign P[] = (CFG == 0)? ~SW_IN : 'bz; assign P[] = (CFG == 0)? ~SW_IN : 'bz; assign noe = nrd & npsen; assign SW_OUT = SW_IN; endmodule of

5 DSC0 Evaluation Kit Switch SW. automatically activates the run/load signals. For loader mode, turn SW. ON. For run mode, turn SW. OFF. DIP switches SW. and SW. are used as configuration inputs by the CPLD program. Normally, these switches should be OFF for proper operation. Turning DIP switch SW. ON causes the high address lines A and A to be set to the values at port pins P.0 and P.. This can be used for address banking, but is not required for normal operation. Turning DIP switch SW. on puts the CPLD into a test mode; press SW to toggle the LEDs. Pushbuttons Reset and interrupt pushbuttons are provided. The reset button resets the DSC0, while the interrupt button can be configured to pull down either the INT0 (by setting SW. ON) or T0 (by setting SW. ON) inputs to the microcontroller when pressed. Header Pins and Prototyping Area Header J provides access to all pins of the DSC0, including power and ground. This header is adjacent to a spaced grid prototyping area for circuit development. GETTING STARTED Before using the DSC0 EV kit, the Microcontroller Tool Kit (MTK) application should be installed. MTK is included on the CD and is available at ) Connect the DC V V, center post positive power supply to the power plug J. ) Connect a DB straight-through serial cable between the PC COM port and connector J. ) Set DIP switches SW., SW., SW., SW., and SW. ON. All other DIP switches should be OFF. ) Turn power ON. All the LEDs should light except for the second from the right. ) Open MTK. In the initial dialog box, select the type of processor you are using (DSC0, DSC0, or DSC0). ) Select Options Configure Serial Port from the menu. Enter COM and 00 baud. ) Select Target Open COM at 00 baud. ) Select Target Connect to Loader. ) A loader banner should appear, as shown in Figure. Refer to the user s guide for more details on the bootloader commands for the DSC0. To load an application into the DSC0 flash memory, first enter K at the bootloader prompt to erase the flash, then select File -> Load Flash and open the.hex file you wish to load. The Help menu in MTK provides additional information. The bootloader also allows you to write to Port directly by entering W P xx, where xx is a hex byte value. If you enter a value such as W P or W P AA, the LED display will change to reflect the new outputs at Port. of

6 DSC0 Evaluation Kit Figure. Microcontroller Tool Kit Output USING THE DSC0 EV KIT WITH THE DS000(T) To use the DSC0 EV kit as the evaluation board for the DS000(T), it is necessary to first unsolder the DSC0 from the EV kit. A 0-pin ZIF socket can then be soldered into its place to allow for multiple programming of the DS000(T). DSC0 INFORMATION For more information on the DSC0 and to download the IC data sheet, go to SCHEMATICS The DSC0 EV kit schematics are featured in the following pages. of

7 DSC0 Evaluation Kit REVISION HISTORY REVISION DATE /0 DESCRIPTION Changed U Cypress part number to CYC00BN-VC in the Components List and in the schematic sheet of Added information about switch SW.; updated schematic sheet of (corrected references of SW. SW. to SW. SW.) Added for the DS00(T) to the General Description describing where to go for DS000(T) instructions and sample programs (for clarification) Changed the ordering number from DSC0-K00 to DSC0-KIT# (added RoHS changes); updated the Component List part numbers for SW and U, and changed the part numbers to lead(pb)-free for U, U, U, and U; changed the Technical Support section to Using the DSC0 EV Kit with the DS000(T) PAGES CHANGED,, of Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 0 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products.

8 AD[..0] 0 AD0 VCC GND 0 D D AD P0.0/AD0 XTAL nrd AD P0./AD XTAL nwr VUNREG AD P0./AD P./nRD P[..0] J AD P0./AD P./nWR P AD P0./AD P./T P AD P0./AD P./T0 P IN AD P0. P./nINT P G P0. P./nINT0 nea_in P G TP EA/VPP P./TXD0 ALE 0 P0 GND ALE/PROG P.0/RXD0 0 npsen RST A RST PJ-00A PSEN P A P. P./nINT P A P. P./INT P A P. P./nINT P A P. P./INT P A0 P. P./TXD P A P. P./RXD P C A P. P./TEX P0 C P.0 P.0/T A[..] P[..0] VCC J XTAL XTAL Header x0 VUNREG JP VCC VUNREG JP VCC U MAX U MAX IN OUT IN OUT IN OUT IN SET TP IN OUT TP B SHDN GND VCC IN SET VCC B Solder Jumper (closed) SHDN GND Solder Jumper (closed) C uf 0v + C 00uF, v VCC C A 00nF A 0v DSC0 Evaluation Kit - Power and Header Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f C uf 0v + C 00uF, v

9 VCC U P[..0] AD[..0] P0 0 AD0 D D P P.0/RXD0 P0.0/AD0 AD P P./TXD0 P0./AD AD P P./INT0 P0./AD AD P P./INT P0./AD AD P P.T0 P0./AD AD P./T P0./AD AD nwr P./WR P0./AD AD nrd P./RD P0./AD P[..0] A[..] P0 A P P.0/T P.0/A A P P./TEX P./A A0 P P./RXD P./A0 A P P./TXD P./A A P P./INT P./A A P P./INT P./A A P P./INT P./A A P./INT P./A C ALE C RST RST ALE 0 nea_in EA XTAL XTAL npsen PSEN XTAL XTAL nloader VCC DSCX0 DSCx0 DIP-0 C pf 0v B B AC VCC VCC VCC UC AC nea_out A A DSC0 Evaluation Kit - Processor Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f 0 GND VCC 0 UA Y. MHz SOCKETED C pf 0v 0 UB AC UD AC

10 D D TP TCK TP TDI U VCC TP TMS TCK TDI 0 TDO TMS AD[..0] A[..0] AD0 A0 C AD AD0 A0 A C AD AD A A AD AD A A AD AD A A AD AD A A AD AD A A AD AD A A AD A nrd ALE npsen CFG0 CFG SW_IN P0 P P0 P P B B P P P P P P P P P P P P[..0] A A noe SW_OUT XCXL A A DSC0 Evaluation Kit - CPLD Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f 0 GNDa GNDb GNDc VCCINTa VCCINTb TP TDO TP + V VCCIO 0 nrd ALE npsen CFG0 CFG SW_IN A A noe SW_OUT 0 TP GND

11 D D OPTIONAL SECOND RAM AD[..0] AD[..0] VCC VCC U 0 CE 0 CE A[..0] A[..0] A0 A0 A A0 A A0 A A A A 0 C A A 0 A A C A A A A A A A A A A A A A A A[..] D0 A A A[..] D0 A A D0 D A A D0 D A A D D A A D D A0 A D D A0 A D D A A0 D D A A0 D D A A D D A A D D A A D D A A D D A A D 0 D A A D 0 D A A D A A D A A A A A A A U noe noe noe noe B nwr nwe nwr nwe B A nce CYC00BN-VC A A DSC0 Evaluation Kit - RAM Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f VCC NC NC GND VCC nce GND CYC00BN-VC

12 J VCC DTR0 DB RS FEMALE CTS0 D U RX0_ SERIAL PORT 0 RTS0 LOADER D TX0_ TX0 TIN TOUT DSR0 TX TIN TOUT DCD0 RX0 RX C+ J C+ C- Cb+ 0 V- C- Vb- Cb- DTR V+ DB RS FEMALE CTS RX_ SERIAL PORT GNDa GNDb RTS TX_ MAX0ECWP DSR C DCD C TX_ RX_ nled VCC P[..0] U noe noe P0 P0 B B P P I0 no0 0 P P I no P P I no R P P I no 0 Ohm P P I no P P I no P P I no I no RESISTOR SIP - 0 OHM SW DIP- AC0 TURN ON TO PULL LXB0XX RESISTOR SIP - 0 OHM PORT LINES LOW 0-SEGMENT RED LED VCC VCC A A DSC0 Evaluation Kit - Serial / Port Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f 0 GND VCC 0 VCC 0 ROUT ROUT RIN RIN RN SW U0 RN

13 J VCC D R D. K VCC SW RN SW RN nloader nled CFG0 CFG SPARE INPUTS nea_out nea_in RX0 P0 TX0 P SW_OUT P P RX P TX P TX_ RX_ 0 0 SW DIP- RESISTOR SIP - 0 OHM SW DIP- RESISTOR SIP -. K C C SW. - ON FOR DSCx0 SW. - ON TO USE SERIAL PORT 0 / LOADER SW. - ON TO USE SERIAL PORT 0 / LOADER SW. - ON TO CONNECT SW AND nint0 SW. - ON TO CONNECT SW AND T0 SW. - ON TO USE SERIAL PORT SW. - ON TO USE SERIAL PORT SW. - OFF FOR NORMAL USE SW. - ON FOR LOADER MODE SW. - ON TO ENABLE LEDs SW. - OFF FOR NORMAL USE SW. - OFF FOR NORMAL USE SW. - UNUSED SW. - UNUSED SW. - UNUSED SW. - UNUSED VCC R VCC B B 0k SW SW_IN RST INTERRUPT PUSHBUTTON RESET PUSHBUTTON BFS-000 A A DSC0 Evaluation Kit - Switches/Config Rev B Copyright (C) 00 - Dallas Semiconductor / MAXIM Size A Document Number -C0-KIT Friday, August 0, 00 Sheet o f R 0k SW R.k BFS-000