sri4k STMicroelectronics, sri4k Datasheet - Page 14

• Manufacturer Part Number: sri4k
• Description: 13.56 Mhz Short-range Contactless Memory Chip With 4096-bit Eeprom And Anticollision Functions
• Manufacturer: STMicroelectronics

Memory mapping
4
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Memory mapping
The SRI4K 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.
Table 3.
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
SRI4K memory mapping
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
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
b
8
b
Fixed Chip_ID
7
(Option)
Table
LSB
3. All blocks are
b
0
Resettable OTP
System OTP
Description
Count down
EEPROM
EEPROM
Lockable
Counter
ROM
bits
bits
SRI4K