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SRT512 bảng dữ liệu(PDF) 17 Page - STMicroelectronics

tên linh kiện SRT512
Giải thích chi tiết về linh kiện  13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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SRT512
Memory mapping
Doc ID 13277 Rev 4
17/46
4.3
EEPROM area
The 9 blocks between addresses 7 and 15 are EEPROM blocks of 32 bits each (36 bytes in
total). (See Figure 16 for a map of the area.) These blocks can be accessed using the
Read_block and Write_block commands. The Write_block command for the EEPROM area
always includes an auto-erase cycle prior to the write cycle.
Blocks 7 to 15 can be write-protected. Write access is controlled by the 9 bits of the
OTP_Lock_Reg located at block address 255 (see Section 4.4.1: OTP_Lock_Reg for
details). Once protected, these blocks (7 to 15) cannot be unprotected
Figure 16.
EEPROM (addresses 7 to 15)
Block
address
MSb
32-bit block
LSb
Description
Lockable
EEPROM
7
8
9
10
11
User area
User area
User area
User area
User area
Ai12383b
13
14
15
User area
User area
User area
12
User area
b31
b16 b15 b14
b8 b7
b0



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