Cypress CY8CTMA120 user manual

User manual for the device Cypress CY8CTMA120

Device: Cypress CY8CTMA120
Category: Computer Hardware
Manufacturer: Cypress
Size: 0.16 MB
Added : 6/27/2014
Number of pages: 5
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Summary of the content on the page No. 1




CY8CTST120, CY8CTMG120, CY8CTMA120

September 2008

Silicon Errata for CY8CTST120, CY8CTMG120, and CY8CTMA120


This document describes the errata for the TrueTouch™ devices CY8CTST120, CY8CTMA120, and
CY8CTMG120. Details include errata trigger conditions, scope of impact, available workarounds, and silicon
revision applicability. Compare this document to the device’s data sheet for a complete functional description.

Contact your local Cypress Sales Representative if you have

Summary of the content on the page No. 2

CY8CTST120, CY8CTMG120, CY8CTMA120 1. Internal Main Oscillator (IMO) tolerance deviation at temperature extremes.  PROBLEM DEFINITION Asynchronous digital communication interfaces may fail framing beyond 0 to 70°C. This problem does not affect end product usage between 0 and 70°C.  PARAMETERS AFFECTED The IMO frequency tolerance. The worst case deviation when operated below 0°C and above +70°C and within the upper and lower data sheet temperature range is ±5%.  TRIGGER COND

Summary of the content on the page No. 3

CY8CTST120, CY8CTMG120, CY8CTMA120 3. Invalid Flash reads may occur if Vdd is pulled to -0.5V just before power on.  PROBLEM DEFINITION When Vdd of the device is pulled below ground just before power on, the first read from each 8K Flash page may be corrupted. This issue does not affect Flash page 0 because it is the selected page upon reset.  PARAMETERS AFFECTED When Vdd is pulled below ground before power on, an internal Flash reference may deviate from its nominal voltage

Summary of the content on the page No. 4

CY8CTST120, CY8CTMG120, CY8CTMA120 and A, 0xf8 ;clear the clock bits (briefly chg the cpu_clk to 3Mhz) or A, 0x02 ;will set clk to 12Mhz mov reg[OSC_CR0],A ;clk is now set at 12Mhz M8C_SetBank0 .loop: mov A, reg[PMA0_DR] ; Get the data from the PMA space mov [X], A ; save it in data array inc X ; increment the pointer dec [USB_APITemp+1] ; decrement the counter jnz .loop ; wait for count to zero out ;; ;; 24Mhz read PMA workaround (back to previous clock spee

Summary of the content on the page No. 5

CY8CTST120, CY8CTMG120, CY8CTMA120 Document History Document Title: Silicon Errata for CY8CTST120, CY8CTMG120, and CY8CTMA120 Document Number: 001-49038 Revision ECN Submission Orig. of Description of Change Date Change ** 2572224 09/25/08 KRY New errata for Touchscreen device. PSoC is a registered trademark of Cypress Semiconductor Corp. TrueTouch, Programmable System-on-Chip, PSoC Designer, and PSoC Express are trademarks of Cypress Semiconductor Corp.


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