lri2k STMicroelectronics, lri2k Datasheet - Page 65

• Manufacturer Part Number: lri2k
• Description: 13.56 Mhz, 2048-bit Eeprom Tag Ic With 64-bit Uid And Kill Code, Iso 15693 And Iso 18000-3 Mode 1 Compliant
• Manufacturer: STMicroelectronics

LRI2K
20.16
Write Kill
On receiving the Write Kill command, the LRI2K writes the kill code with the data contained
in the request and reports whether the operation was successful in the response. The
Option_Flag is supported. After a successful write, the kill code must be locked by a Lock
Kill command to activate the protection.
During the write cycle t
Otherwise, the LRI2K may not correctly program the data to the memory. The t
equal to t
Table 66.
Request parameters:
Table 67.
No parameter. The response is send back after the write cycle.
Table 68.
Response parameter:
Figure 55. Write Kill frame exchange between VCD and LRI2K
Request
Response SOF
Response SOF
LRI2K
LRI2K
SOF
VCD
UID (Optional)
Kill Address (00h = Kill, other = Error)
Data
Error code as Error_Flag is set:
–
–
–
1nom
10h: block address not available
12h: block is locked
13h: block not programmed
Request_
SOF
Flags
8 bits
Write Kill request format
Write Kill response format when Error_Flag is NOT set
Write Kill response format when Error_Flag is set
+ 18 × 302 µs.
Response_Flags
Write Kill
request
Response_Flags
Write
W
B1h
Kill
8 bits
, there should be no modulation (neither 100% nor 10%).
8 bits
EOF
IC Mfg
code
02h
<------------ t
<-t
1
-> SOF
Error code
64 bits
8 bits
UID
W
------------><- t
response
Write Kill
CRC16
16 bits
access
00h
Kill
CRC16
16 bits
1
-> SOF
Kill code CRC16
32 bits
EOF
Write sequence when
Commands codes
response
Write Kill
Response EOF
16 bits
Response EOF
W
error
time is
Request
EOF
EOF
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