SRI512-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI512-SBN181GE Datasheet - Page 32

• Manufacturer Part Number: SRI512-SBN181GE
• Description: 13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

SRI512 commands
8.4
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Select(Chip_ID) command
Command code = 0Eh
The Select() command allows the SRI512 to enter the Selected state. Until this command is
issued, the SRI512 will not accept any other command, except for Initiate(), Pcall16() and
Slot_marker(). The Select() command returns the 8 bits of the Chip_ID value. An SRI512 in
Selected state, that receives a Select() command with a Chip_ID that does not match its
own is automatically switched to Deselected state.
Figure 32. Select request format
Request parameter:
●
Figure 33. Select response format
Response parameters:
●
Figure 34. Select frame exchange between reader and SRI512
Reader
SRI512
8-bit Chip_ID stored during the anticollision sequence
Chip_ID of the selected tag. Must be equal to the transmitted Chip_ID
SOF
SOF
SOF
0Eh
Select
0Eh
Chip_ID
Chip_ID
CRC L
8 bits
Chip_ID
8 bits
CRC H EOF
8 bits
CRC L
<-t 0 -> <-t 1 ->
8 bits
CRC L
SOF Chip_ID
CRC H
8 bits
CRC H
8 bits
CRC L CRC H EOF
EOF
EOF
AI07671
AI07677b
SRI512
AI10945