SRIX4K-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRIX4K-SBN181GE Datasheet - Page 14

• Manufacturer Part Number: SRIX4K-SBN181GE
• Description: 13.56 MHz short-range contactless memory chip with 4096-bit EEPROM, anticollision and anti-clone functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Memory mapping
4
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Memory mapping
The SRIX4K is organized as 128 blocks of 32 bits as shown in
accessible by the Read_block command. Depending on the write access, they can be
updated by the Write_block command. A Write_block updates all the 32 bits of the block.
Figure 12. SRIX4K memory mapping
Block
Addr
UID0
UID1
127
255
10
11
12
13
14
15
16
...
0
1
2
3
4
5
6
7
8
9
Msb
b
OTP_Lock_Reg
31
b
24
b
23
32 bits binary counter
32 bits binary counter
32 bits Boolean area
32 bits Boolean area
32 bits Boolean area
32 bits Boolean area
32 bits Boolean area
64 bits UID area
ST Reserved
User area
User area
User area
User area
User area
User area
User area
User area
User area
User area
User area
User area
32-bit block
b
16
b
15
b
8
b
Fixed Chip_ID
7
(Option)
Figure
Lsb
b
0
12. All blocks are
System OTP bits
Resettable OTP
Description
Count down
EEPROM
EEPROM
Lockable
counter
ROM
bits
SRIX4K