st92f124 STMicroelectronics, st92f124 Datasheet - Page 51

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

3.2 FUNCTIONAL DESCRIPTION
3.2.1 Structure
The memory is composed of three parts:
– a sector wih the system routines (TestFlash) and
– 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.
Table 7. Memory Structure for 64K Flash device
Table 8. Memory Structure for 128K Flash device
the user OTP area
Hardware Emulated EEPROM sectors
Hardware Emulated EEPROM sectors
Protection Registers (reserved)
Protection Registers (reserved)
ST92F124/F150/F250 - SINGLE VOLTAGE FLASH & E3 TM (EMULATED EEPROM)
TestFlash (TF) (Reserved)
TestFlash (TF) (Reserved)
Emulated EEPROM
Emulated EEPROM
Flash 0 (F0)
Flash 1 (F1)
Flash 2 (F2)
Flash 0 (F0)
Flash 1 (F1)
Flash 2 (F2)
Flash 3 (F3)
(reserved)
(reserved)
OTP Area
OTP Area
Sector
Sector
231FFCh to 231FFFh
231FFCh to 231FFFh
231F80h to 231FFBh
004000h to 00FFFFh
228000h to 22CFFFh
231F80h to 231FFBh
004000h to 00FFFFh
010000h to 01FFFFh
228000h to 22CFFFh
230000h to 231F7Fh
000000h to 001FFFh
002000h to 003FFFh
220000h to 2203FFh
230000h to 231F7Fh
000000h to 001FFFh
002000h to 003FFFh
220000h to 2203FFh
3.2.2 EEPROM Emulation
A hardware EEPROM emulation is implemented
using special flash sectors to emulate an EEP-
ROM memory. This
from 220000h to 2203FFh.
(For more details on hardware EEPROM emula-
tion, see application note AN1152)
Addresses
Addresses
E
3 TM
is directly addressed
8064 bytes
8064 bytes
48 Kbytes
48 Kbytes
64 Kbytes
Max Size
124 bytes
Max Size
124 bytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
1 Kbyte
1 Kbyte
4 bytes
4 bytes
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