SRIX4K-A3S STMICROELECTRONICS [STMicroelectronics], SRIX4K-A3S Datasheet - Page 3

• Manufacturer Part Number: SRIX4K-A3S
• Description: 13.56MHz Short Range Contactless Memory Chip With 4096 bit EEPROM, Anti-Collision and Anti-Clone Functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

MEMORY MAPPING
The SRIX4K is organised as 128 blocks of 32 bits
as shown in Figure 3. All blocks are accessible by
the READ_BLOCK command. Depending on the
Figure 3. 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
31
OTP_Lock_Reg
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
32 bits Block
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
b
16
b
15
write access, they can be updated by the
WRITE_BLOCK command. A WRITE_BLOCK up-
dates all the 32 bits of the block.
b
8
b
7
Fixed Chip_ID
(Option)
Lsb
b
0
Resettable OTP bits
Lockable EEPROM
System OTP bits
Description
Count down
EEPROM
Counter
ROM
SRIX4K
3/5