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SRI512 데이터시트(PDF) 17 Page - STMicroelectronics

부품명 SRI512
상세설명  13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
PDF  47 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRI512 데이터시트(HTML) 17 Page - STMicroelectronics

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SRI512
Memory mapping
17/47
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 b31 to b21 act as an 11-bit Reload counter; whenever one
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 Section 4.1: Resettable OTP area). The
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 (211-1).
ai07661
1
...1111111111111
1
...111111111111
0
1
...11111111111
01
Initial data
1-unit decrement
1-unit decrement
b31
b0
1
...11111111111
00
1
...111111111
0100
1
...111111111
1000
1-unit decrement
8-unit decrement
Increment not allowed



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