For More Information Please contact your local sales office for additional information about Cypress products and solutions.

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1 The following document contains information on Cypress products. The document has the series name, product name, and ordering part numbering with the prefix MB. However, Cypress will offer these products to new and existing customers with the series name, product name, and ordering part number with the prefix CY. How to Check the Ordering Part Number 1. Go to 2. Enter the keyword (for example, ordering part number) in the SEARCH PCNS field and click Apply. 3. Click the corresponding title from the search results. 4. Download the Affected Parts List file, which has details of all changes For More Information Please contact your local sales office for additional information about Cypress products and solutions. About Cypress Cypress is the leader in advanced embedded system solutions for the world's most innovative automotive, industrial, smart home appliances, consumer electronics and medical products. Cypress' microcontrollers, analog ICs, wireless and USB-based connectivity solutions and reliable, high-performance memories help engineers design differentiated products and get them to market first. Cypress is committed to providing customers with the best support and development resources on the planet enabling them to disrupt markets by creating new product categories in record time. To learn more, go to

2 MB91520 Series February 19, 2018 Chip Errata for the MB91520 Series 32-Bit FR81S Microcontroller This document describes the errata for the MB91520 Series 32-Bit FR81S Microcontroller. Compare this document to the device s data sheet for a complete functional description. Contact your local Cypress Sales Representative if you have questions. Part Numbers Affected Part Number MB91520 Series Problem Description Two control problems were found with the I/O ports of MB91520 series. Operation of the control differs from what is described in the MB91520 series Hardware manual. Details of the problems and workaround are provided in this errata. Part numbers of the devices affected are listed as follows: Affected Devices Series MB91F520 series Part Number MB91F522LWB, MB91F522LYB, MB91F522LJB, MB91F522LLB, MB91F523LWB, MB91F523LYB, MB91F523LJB, MB91F523LLB, MB91F524LWB, MB91F524LYB, MB91F524LJB, MB91F524LLB, MB91F525LWB, MB91F525LYB, MB91F525LJB, MB91F525LLB, MB91F526LWB, MB91F526LYB, MB91F526LJB, MB91F526LLB, MB91F522LSB, MB91F522LUB, MB91F522LHB, MB91F522LKB, MB91F523LSB, MB91F523LUB, MB91F523LHB, MB91F523LKB, MB91F524LSB, MB91F524LUB, MB91F524LHB, MB91F524LKB, MB91F525LSB, MB91F525LUB, MB91F525LHB, MB91F525LKB, MB91F526LSB, MB91F526LUB, MB91F526LHB, MB91F526LKB, MB91F522KWB,MB91F522KYB,MB91F522KJB,MB91F522KLB, MB91F523KWB, MB91F523KYB, MB91F523KJB, MB91F523KLB, MB91F524KWB, MB91F524KYB, MB91F524KJB, MB91F524KLB, MB91F525KWB, MB91F525KYB, MB91F525KJB, MB91F525KLB, MB91F526KWB, MB91F526KYB, MB91F526KJB, MB91F526KLB, MB91F522KSB, MB91F522KUB, MB91F522KHB, MB91F522KKB, MB91F523KSB, MB91F523KUB, MB91F523KHB, MB91F523KKB MB91F524KSB, MB91F524KUB, MB91F524KHB, MB91F524KKB, MB91F525KSB, MB91F525KUB, MB91F525KHB, MB91F525KKB, MB91F526KSB, MB91F526KUB, MB91F526KHB, MB91F526KKB, MB91F522JWB, MB91F522JYB, MB91F522JJB, MB91F522JLB, MB91F523JWB, MB91F523JYB, MB91F523JJB, MB91F523JLB, MB91F524JWB, MB91F524JYB, MB91F524JJB, MB91F524JLB, Cypress Semiconductor Corporation 198 Champion Court San Jose, CA February 19, 2018 Document No Rev. *B 1

3 Errata Document MB91520 Series Series Part Number MB91F525JWB, MB91F525JYB, MB91F525JJB, MB91F525JLB, MB91F526JWB, MB91F526JYB, MB91F526JJB, MB91F526JLB, MB91F522JSB,MB91F522JUB,MB91F522JHB,MB91F522JKB, MB91F523JSB, MB91F523JUB, MB91F523JHB, MB91F523JKB, MB91F524JSB, MB91F524JUB, MB91F524JHB, MB91F524JKB, MB91F525JSB, MB91F525JUB, MB91F525JHB, MB91F525JKB, MB91F526JSB, MB91F526JUB, MB91F526JHB, MB91F526JKB, MB91F522FWB, MB91F522FYB, MB91F522FJB, MB91F522FLB, MB91F523FWB, MB91F523FYB, MB91F523FJB, MB91F523FLB, MB91F524FWB,MB91F524FYB,MB91F524FJB,MB91F524FLB, MB91F525FWB, MB91F525FYB, MB91F525FJB, MB91F525FLB, MB91F526FWB, MB91F526FYB, MB91F526FJB, MB91F526FLB, MB91F522FSB, MB91F522FUB, MB91F522FHB, MB91F522FKB, MB91F523FSB, MB91F523FUB, MB91F523FHB, MB91F523FKB, MB91F524FSB, MB91F524FUB, MB91F524FHB, MB91F524FKB, MB91F525FSB, MB91F525FUB, MB91F525FHB, MB91F525FKB, MB91F526FSB, MB91F526FUB, MB91F526FHB, MB91F526FKB, MB91F522DWB, MB91F522DYB, MB91F522DJB, MB91F522DLB, MB91F523DWB, MB91F523DYB, MB91F523DJB, MB91F523DLB, MB91F524DWB, MB91F524DYB, MB91F524DJB, MB91F524DLB, MB91F525DWB, MB91F525DYB, MB91F525DJB, MB91F525DLB, MB91F526DWB, MB91F526DYB, MB91F526DJB, MB91F526DLB, MB91F522DSB, MB91F522DUB, MB91F522DHB, MB91F522DKB, MB91F523DSB, MB91F523DUB, MB91F523DHB, MB91F523DKB, MB91F524DSB, MB91F524DUB, MB91F524DHB, MB91F524DKB, MB91F525DSB, MB91F525DUB, MB91F525DHB, MB91F525DKB, MB91F526DSB, MB91F526DUB, MB91F526DHB, MB91F526DKB, MB91F522BWB, MB91F522BYB, MB91F522BJB, MB91F522BLB, MB91F523BWB, MB91F523BYB, MB91F523BJB, MB91F523BLB, MB91F524BWB, MB91F524BYB, MB91F524BJB, MB91F524BLB, MB91F525BWB, MB91F525BYB, MB91F525BJB, MB91F525BLB, MB91F526BWB, MB91F526BYB, MB91F526BJB, MB91F526BLB, MB91F522BSB, MB91F522BUB, MB91F522BHB, MB91F522BKB MB91F523BSB, MB91F523BUB, MB91F523BHB, MB91F523BKB, MB91F524BSB, MB91F524BUB, MB91F524BHB, MB91F524BKB, MB91F525BSB, MB91F525BUB, MB91F525BHB, MB91F525BKB, MB91F526BSB, MB91F526BUB, MB91F526BHB, MB91F526BKB February 19, 2018 Document No Rev. *B 2

4 Details of the Problems Errata Document MB91520 Series Waveform generator Those pins listed in the following tables do not operate as I/O ports after outputs of the waveform generator are disabled by the use of the "DTTI" function: Table 1. Affected pins for the waveform generator Pin Name Function specified (Correct) Device operation (Error) Affected product package(64pins, 80pins, 100pins, 120pins) RTO3_0 (P115) I/O port Low fixed RTO4_0 (P116) I/Oport Low fixed Pin Name Function specified (Correct) Device operation (Error) Affected product package (64pins, 80pins, 100pins, 120pins) Affected product package (144pins, 176pins) RTO0_1 (P034) I/O port High-impedance(Input enabled) Low fixed RTO1_1 (P033) I/O port High-impedance (Input enabled) Low fixed RTO2_1 (P032) I/O port High-impedance (Input enabled) Low fixed RTO3_1 (P027) I/O port High-impedance (Input enabled) Low fixed RTO4_1 (P024) I/O port High-impedance (Input enabled) High fixed RTO5_1 (P020) I/O port External bus clock High fixed D/A converter The pin shown in the following table does not operate as an I/O port after the setting of output disable with "DACR register". Moreover, the pin does not function as an I/O port when the D/A converter is stopped due to the switching to stop mode or watch mode. Table 2. Affected pins for the D/A converter Pin Name Affected product package (64pins, 80pins, 100pins, 120pins) Function specified (Correct) Device operation (Error) DAO0 (P087) I/O port Low fixed February 19, 2018 Document No Rev. *B 3

5 Workaround Workaround by software Errata Document MB91520 Series Waveform generator Workaround 1 Write "0" to corresponding bits in the port function register "PFRxx (xx = 00 to 19)"in order to enable as an I/O port. Waveform generator is now outputting Write the key codes to corresponding bits in KEYCDR Write 0 to corresponding bits in PFRxx I/O port function enabled Workaround 2 Stop outputting of the waveform generator by switching to the compare output for a 16-bit output compare (16-bit OCU). Waveform generator is now outputting Stop each 16-bit OCU - Write 0 to OCSxy_CSTO0,1 (xy = 01, 23, 45) Set initial output level of each 16-bit OCU -Write 0/1 to OCSxy_OTD0,1 (xy = 01, 23, 45) Change output of the 16-bit OCU -Write 0x00 to DTSCR0, 1, 2 February 19, 2018 Document No Rev. *B 4

6 Errata Document MB91520 Series D/A converter When the output pin of the D/A converter is used as the I/O port, write "0" to corresponding bits in the port function register "PFRxx (xx = 00 to 19)". D/A converter is now outputting Write the key codes to corresponding bits in KEYCDR Write 0 to corresponding bits in PFRxx General-purpose port function enabled Corrective action by Cypress Cypress will revise the Waveform generator and D/A converter of the affected devices. The part numbers will be changed from MB91F52xxxB to MB91F52xxxC. Details of the revisions are as follows: Waveform generator: Revision will be made so that the output pin of the waveform generator can function as an I/O port after the output is disabled by the use of the "DTTI" function. D/A converter: Revision will be made so that the output pin can perform the following functions: -The output pin functions as an I/O port after the output is disabled by the setting of the D/A control register "DACR". -The output pin functions as an I/O port when the D/A converter is stopped due to the switching to stop mode or watch mode. Availability schedule of the revisions Availability schedule of the revisions are shown in the following table: New Part Number (Corrected device) ES CS MB91F526xxC MB91F525xxC MB91F524xxC MB91F523xxC MB91F522xxC June/2013 Sep./2013 February 19, 2018 Document No Rev. *B 5

7 Errata Document MB91520 Series Document History Page Document Title: Chip Errata for the MB91520 Series 32-Bit FR81S Microcontroller Document Number: Rev. ECN No. Orig. of Change Description of Change ** KUME Initial release *A KUME Migrated to Cypress format *B YOST Updated the Cypress logo, Sales information and legal. Completing Sunset Review. Cypress Semiconductor 198 Champion Court San Jose, CA Cypress Semiconductor Corporation, This document is the property of Cypress Semiconductor Corporation and its subsidiaries, including Spansion LLC ( Cypress ). This document, including any software or firmware included or referenced in this document ( Software ), is owned by Cypress under the intellectual property laws and treaties of the United States and other countries worldwide. Cypress reserves all rights under such laws and treaties and does not, except as specifically stated in this paragraph, grant any license under its patents, copyrights, trademarks, or other intellectual property rights. If the Software is not accompanied by a license agreement and you do not otherwise have a written agreement with Cypress governing the use of the Software, then Cypress hereby grants you a personal, non-exclusive, nontransferable license (without the right to sublicense) (1) under its copyright rights in the Software (a) for Software provided in source code form, to modify and reproduce the Software solely for use with Cypress hardware products, only internally within your organization, and (b) to distribute the Software in binary code form externally to end users (either directly or indirectly through resellers and distributors), solely for use on Cypress hardware product units, and (2) under those claims of Cypress s patents that are infringed by the Software (as provided by Cypress, unmodified) to make, use, distribute, and import the Software solely for use with Cypress hardware products. Any other use, reproduction, modification, translation, or compilation of the Software is prohibited. TO THE EXTENT PERMITTED BY APPLICABLE LAW, CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS DOCUMENT OR ANY SOFTWARE OR ACCOMPANYING HARDWARE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. No computing device can be absolutely secure. Therefore, despite security measures implemented in Cypress hardware or software products, Cypress does not assume any liability arising out of any security breach, such as unauthorized access to or use of a Cypress product. In addition, the products described in these materials may contain design defects or errors known as errata which may cause the product to deviate from published specifications. To the extent permitted by applicable law, Cypress reserves the right to make changes to this document without further notice. Cypress does not assume any liability arising out of the application or use of any product or circuit described in this document. Any information provided in this document, including any sample design information or programming code, is provided only for reference purposes. It is the responsibility of the user of this document to properly design, program, and test the functionality and safety of any application made of this information and any resulting product. Cypress products are not designed, intended, or authorized for use as critical components in systems designed or intended for the operation of weapons, weapons systems, nuclear installations, life-support devices or systems, other medical devices or systems (including resuscitation equipment and surgical implants), pollution control or hazardous substances management, or other uses where the failure of the device or system could cause personal injury, death, or property damage ( Unintended Uses ). A critical component is any component of a device or system whose failure to perform can be reasonably expected to cause the failure of the device or system, or to affect its safety or effectiveness. Cypress is not liable, in whole or in part, and you shall and hereby do release Cypress from any claim, damage, or other liability arising from or related to all Unintended Uses of Cypress products. You shall indemnify and hold Cypress harmless from and against all claims, costs, damages, and other liabilities, including claims for personal injury or death, arising from or related to any Unintended Uses of Cypress products. Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, WICED, PSoC, CapSense, EZ-USB, F-RAM, and Traveo are trademarks or registered trademarks of Cypress in the United States and other countries. For a more complete list of Cypress trademarks, visit cypress.com. Other names and brands may be claimed as property of their respective owners. February 19, 2018 Document No Rev. *B 6