AN1502 Datasheet, PDF (1/7 Pages) STMicroelectronics – EMULATED DATA EEPROM WITH ST7 HDFLASH MEMORY

AN1502
APPLICATION NOTE
EMULATED DATA EEPROM WITH ST7 HDFLASH MEMORY
by Microcontroller Division Applications
INTRODUCTION
When the data EEPROM is not available in a ST7 device, it can be emulated by the HDFlash
memory with some restrictions. This Application Note describes how to emulate this feature
with a ST72F521 device and the restrictions this emulation implies.
Data EEPROM can be emulated in all HDFlash devices.
AS HDFlash is a dual voltage FLASH memory, the 12-volt programming voltage must be
provided on the application board (a pull-down on ICPSEL on the application board is
advised).
For more information concerning ST7 programming, a .zip file is included with the complete
corresponding code for the ST72F521, visit our web site at www.st.com.
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