SRT512_09 datasheet(17/46 Pages) STMICROELECTRONICS

Part #	SRT512

Description	13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions

PDF	46 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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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

User area

Ai12383b

User area

b31

b16 b15 b14

b8 b7

SRT512 Datasheet(PDF) 17 Page - STMicroelectronics