SRI4K-A3T/1GE STMicroelectronics, SRI4K-A3T/1GE Datasheet - Page 9

• Manufacturer Part Number: SRI4K-A3T/1GE
• Manufacturer: STMicroelectronics

Specifications of SRI4K-A3T/1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Compliant

MEMORY MAPPING
The SRI4K is organized as 128 blocks of 32 bits as
shown in
the READ_BLOCK command. Depending on the
Figure 13. SRI4K 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
Figure
Msb
b
31
OTP_Lock_Reg
13.. All blocks are accessible by
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
SRI4K
9/41