srt512 STMicroelectronics, srt512 Datasheet - Page 36

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

SRT512 commands
8.9
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Figure 44. WRITE_BLOCK frame exchange between Reader and SRT512
GET_UID() command
Command Code = 0Bh
On receiving the GET_UID command, the SRT512 returns its 8 UID Bytes. UID Bytes are
transmitted with the Least Significant Byte first, and each byte is transmitted with the least
significant bit first.
The SRT512 must have received a SELECT() command and be switched to SELECTED
state before any GET_UID() command can be accepted. All GET_UID() commands sent to
the SRT512 before a SELECT() command is issued, are ignored.
Figure 45. GET_UID request format
Request parameter:
Figure 46. GET_UID response format
Response parameters:
Reader
SRT512
SOF
No parameter
UID 0: Less significant UID Byte
UID 1 to UID 6: UID Bytes
UID 7: Most significant UID Byte.
UID 0
8 bits
SOF
09h
UID 1
8 bIts
ADDR
SOF
UID 2
8 bIts
DATA
GET_UID
1
UID 3
8 bIts
0Bh
DATA
2
UID 4
8 bIts
DATA
3
8 bits
CRC L
UID 5
8 bIts
DATA
4
UID 6
CRC L CRC H EOF
8 bIts
CRC H
8 bits
UID 7
8 bIts
EOF
CRC L
8 bits
CRC H
No Response
8 bIts
AI07693
AI13514b
SRT512
EOF
AI07694