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ST92F124CR1QB Datasheet(PDF) 52 Page - STMicroelectronics |
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ST92F124CR1QB Datasheet(HTML) 52 Page - STMicroelectronics |
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52 / 429 page  52/429 ST92F124/F150/F250 - SINGLE VOLTAGE FLASH & E3 TM (EMULATED EEPROM) 3.2 FUNCTIONAL DESCRIPTION 3.2.1 Structure The memory is composed of three parts: – a sector wih the system routines (TestFlash) and the user OTP area – 4 main sectors for code – an emulated EEPROM 124 bytes are available to the user as an OTP ar- ea. The user can program these bytes, but cannot erase them. 3.2.2 EEPROM Emulation A hardware EEPROM emulation is implemented using special flash sectors to emulate an EEP- ROM memory. This E3 TM is directly addressed from 220000h to 2203FFh. (For more details on hardware EEPROM emula- tion, see application note AN1152) Table 7. Memory Structure for 64K Flash device Table 8. Memory Structure for 128K Flash device Sector Addresses Max Size TestFlash (TF) (Reserved) 230000h to 231F7Fh 8064 bytes OTP Area Protection Registers (reserved) 231F80h to 231FFBh 231FFCh to 231FFFh 124 bytes 4 bytes Flash 0 (F0) 000000h to 001FFFh 8 Kbytes Flash 1 (F1) 002000h to 003FFFh 8 Kbytes Flash 2 (F2) 004000h to 00FFFFh 48 Kbytes Hardware Emulated EEPROM sectors (reserved) 228000h to 22CFFFh 8 Kbytes Emulated EEPROM 220000h to 2203FFh 1 Kbyte Sector Addresses Max Size TestFlash (TF) (Reserved) 230000h to 231F7Fh 8064 bytes OTP Area Protection Registers (reserved) 231F80h to 231FFBh 231FFCh to 231FFFh 124 bytes 4 bytes Flash 0 (F0) 000000h to 001FFFh 8 Kbytes Flash 1 (F1) 002000h to 003FFFh 8 Kbytes Flash 2 (F2) 004000h to 00FFFFh 48 Kbytes Flash 3 (F3) 010000h to 01FFFFh 64 Kbytes Hardware Emulated EEPROM sectors (reserved) 228000h to 22CFFFh 8 Kbytes Emulated EEPROM 220000h to 2203FFh 1 Kbyte 9 |
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