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SRT512 데이터시트(PDF) 19 Page - STMicroelectronics

부품명 SRT512
상세설명  13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
PDF  46 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRT512 데이터시트(HTML) 19 Page - STMicroelectronics

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SRT512
Memory mapping
Doc ID 13277 Rev 4
19/46
4.4.2
Fixed Chip_ID (Option)
The SRT512 is provided with an anticollision feature based on a random 8-bit Chip_ID. Prior
to selecting an SRT512, an anticollision sequence has to be run to search for the Chip_ID of
the SRT512. This is a very flexible feature, however the searching loop requires time to run.
For some applications, much time could be saved by knowing the value of the SRT512
Chip_ID beforehand, so that the SRT512 can be identified and selected directly without
having to run an anticollision sequence. This is why the SRT512 was designed with an
optional mask setting used to program a fixed 8-bit Chip_ID to bits b7 to b0 of the system
area. When the fixed Chip_ID option is used, the random Chip_ID function is disabled.



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