M24LR64-RDW6T-2 Datasheet, PDF (82/121 Pages) STMicroelectronics – Dynamic NFC/RFID tag IC with 64-Kbit EEPROM with I²C bus and ISO 15693 RF interface

Commands codes
M24LR64-R
Response parameter:
• Error code as Error_flag is set:
– 03h: the option is not supported
– 0Fh: error with no information given
Figure 57. Reset to Ready frame exchange between VCD and M24LR64-R
VCD
M24LR64-
R
SOF
Reset to
Ready
request
EOF
<-t₁-> SOF
Reset to
Ready
response
EOF
26.8
Write AFI
On receiving the Write AFI request, the M24LR64-R programs the 8-bit AFI value to its
memory. The Option_flag is supported.
During the RF write cycle W_t, there should be no modulation (neither 100% nor 10%).
Otherwise, the M24LR64-R may not write correctly the AFI value into the memory. The W_t
time is equal to t_1nom + 18 × 302 µs.
Table 54. Write AFI request format
Request Request Write
SOF _flags AFI
UID⁽¹⁾
AFI
CRC16
Request
EOF
8 bits 27h
1. Gray means that the field is optional.
64 bits
8 bits 16 bits
Request parameter:
• UID (optional)
• AFI
Table 55. Write AFI response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
8 bits
16 bits
Response parameter:
• No parameter.
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