SRIX4K_07 Datasheet, PDF (14/50 Pages) STMicroelectronics – 13.56 MHz short-range contactless memory chip with 4096-bit EEPROM, anticollision and anti-clone functions

Memory mapping
4
Memory mapping
SRIX4K
The SRIX4K is organized as 128 blocks of 32 bits as shown in Figure 3. All blocks are
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. SRIX4K memory mapping
Block
Addr
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
...
127
Msb32 bits BlockLsb
b₃₁b₂₄ b₂₃b₁₆ b₁₅b₈ b₇b₀
32 bits Boolean Area
32 bits Boolean Area
32 bits Boolean Area
32 bits Boolean Area
32 bits Boolean Area
32 bits binary counter
32 bits binary counter
User Area
User Area
User Area
User Area
User Area
User Area
User Area
User Area
User Area
User Area
User Area
User Area
Description
Resettable OTP
bits
Count down
Counter
Lockable
EEPROM
EEPROM
255 OTP_Lock_Reg
ST Reserved
Fixed Chip_ID
(Option)
System OTP bits
UID0
UID1
64 bits UID Area
ROM
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