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M24LR64E-R 数据表(PDF) 114 Page - STMicroelectronics

部件名 M24LR64E-R
功能描述  64-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  140 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M24LR64E-R 数据表(HTML) 114 Page - STMicroelectronics

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M24LR64E-R
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Doc ID 022712 Rev 3
Figure 74.
ReadCfg frame exchange between VCD and M24LR64E-R
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the ReadCfg command to the end of the M24LR64E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z
state.
26.24
WriteEHCfg
On receiving the WriteEHCfg command, the M24LR64E-R writes the data contained in the
request to the Configuration byte and reports whether the write operation was successful in
the response. The Protocol_extension_flag should be set to 0 for the M24LR64E-R to
operate correctly. If the Protocol_extension_flag is at 1, the M24LR64E-R answers with an
error code.
The Option_flag is supported, the Inventory_flag is not supported.
During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%),
otherwise the M24LR64E-R may not program correctly the data into the Configuration byte.
The Wt time is equal to t1nom + 18 × 302 µs.
Request parameters:
●
Request flags
●
UID (optional)
●
Data: during WriteEHCfg command, bit 3 of the data is ignored (see Table 14).
Response parameter:
●
No parameter. The response is sent back after the writing cycle.
VCD
SOF
ReadCfg request
EOF
M24LR64E-R
<-t1-> SOF ReadCfg response EOF
Table 106.
WriteEHCfg request format
Request
SOF
Request_
flags
WriteEHCfg
IC Mfg
code
UID(1)
1.
Gray color means that the field is optional.
Data
CRC16
Request
EOF
8 bits
A1h
02h
64 bits
8 bits
16 bits
Table 107.
WriteEHCfg response format when Error_flag is NOT set
Response SOF
Response_flags
CRC16
Response EOF
8 bits
16 bits



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