LRIS2K_08 Datasheet, PDF (65/102 Pages) STMicroelectronics – 2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant

LRIS2K
30 Write AFI
Write AFI
On receiving the Write AFI request, the LRIS2K programs the 8-bit AFI value to its memory.
Only bits set to ‘1’ are programmed to the AFI Register. Bits set to ‘0’ are not updated by the
LRIS2K. The Option_flag is supported.
During the write cycle t_W, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not write correctly the AFI value into the memory. The t_W time is
equal to t_1nom + 18 × 302 µs.
Table 47. Write AFI request format
Request Request Write
SOF _flags AFI
UID
8 bits 27h
64 bits
AFI
8 bits
CRC16
Request
EOF
16 bits
Request parameters:
● UID (Optional)
● AFI
Table 48. Write AFI response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response parameter:
● No parameter.
Response
EOF
Table 49. Write AFI response format when Error_flag is set
Response Response_
SOF
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
● Error code as Error_flag is set
– 12h: block is locked
– 13h: block not programmed
Response
EOF
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