sri512 STMicroelectronics, sri512 Datasheet - Page 17

• Manufacturer Part Number: sri512
• Description: 13.56-mhz Short-range Contactless Memory Chip With 512-bit Eeprom And Anti-collision Functions
• Manufacturer: STMicroelectronics

SRI512
Figure 16. Count down example (binary format)
The counter with block address 6 controls the Reload command used to reset the resettable
OTP area (addresses 0 to 4). Bits b
of these 11 bits is updated, the SRI512 detects the change and adds an Erase cycle to the
WRITE_BLOCK command for locations 0 to 4 (see
Erase cycle remains active until a POWER-OFF or a SELECT command is issued. The
SRI512’s resettable OTP area can be reloaded up to 2,047 times (2
Initial data
1-unit decrement
1-unit decrement
1-unit decrement
8-unit decrement
Increment not allowed
b31
1
1
1
1
1
1
...
...
...
...
...
...
1
1
1
1
1
1
31
to b
1
1
1
1
1
1
21
1
1
1
1
1
1
act as an 11-bit Reload counter; whenever one
1
1
1
1
1
1
1
1
1
1
1
1
Section 4.1: Resettable OTP
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
1
1
1
1
1
1
-1).
1
1
1
1
0
1
Memory mapping
1
1
1
1
1
0
area). The
1
1
0
0
0
0
ai07661
1
0
1
0
0
0
b0
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