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M24LR16E-R 数据表(PDF) 94 Page - STMicroelectronics

部件名 M24LR16E-R
功能描述  16-bit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  143 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M24LR16E-R 数据表(HTML) 94 Page - STMicroelectronics

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M24LR16E-R
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Doc ID 018932 Rev 8
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the Write AFI command to the end of the M24LR16E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin is tied to 0 for the
duration of the internal write cycle (from the end of a valid Write AFI command to the
beginning of the M24LR16E-R response).
26.9
Lock AFI
On receiving the Lock AFI request, the M24LR16E-R locks the AFI value permanently. The
Option_flag is supported.
During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%),
otherwise, the M24LR16E-R may not Lock correctly the AFI value in memory. The Wt time is
equal to t1nom + 18 × 302 µs.
Request parameter:
●
Request Flags
●
UID (optional)
Response parameter:
●
No parameter
Figure 61.
Write AFI frame exchange between VCD and M24LR16E-R
VCD
SOF
Write AFI
request
EOF
M24LR16E-R
<-t1-> SOF
Write AFI
response
EOF
Write sequence
when error
M24LR16E-R
<------------------ Wt --------------> SOF
Write AFI
response
EOF
Table 60.
Lock AFI request format
Request
SOF
Request_
flags
Lock
AFI
UID(1)
1.
Gray means that the field is optional.
CRC16
Request
EOF
8 bits
28h
64 bits
16 bits
Table 61.
Lock AFI response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
Response
EOF
8 bits
16 bits



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