srt512 STMicroelectronics, srt512 Datasheet - Page 19

• Manufacturer Part Number: srt512
• Description: 13.56 Mhz Short-range Contactless Memory Chip With 512-bit Eeprom And Anticollision Functions
• Manufacturer: STMicroelectronics

SRT512
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 b
area. When the fixed Chip_ID option is used, the random Chip_ID function is disabled.
7
to b
Memory mapping
0
of the system
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