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M24LR04E-R Datasheet(PDF) 114 Page - STMicroelectronics

Part # M24LR04E-R
Description  4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  142 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24LR04E-R Datasheet(HTML) 114 Page - STMicroelectronics

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Command codes
M24LR04E-R
114/142
Doc ID 022208 Rev 5
26.22
Initiate
On receiving the Initiate command, the M24LR04E-R sets the internal Initiate_flag and
sends back a response only if it is in the ready state. The command has to be issued in the
Non Addressed mode only (Select_flag is reset to 0 and Address_flag is reset to 0). If an
error occurs, the M24LR04E-R does not generate any answer. The Initiate_flag is reset after
a power-off of the M24LR04E-R.
The request contains:
●
No data
The response contains:
●
the flags,
●
the Unique ID.
.
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the Initiate command to the end of the M24LR04E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z
state.
Table 100.
Initiate request format
Request
SOF
Request_flags
Initiate
IC Mfg
code
CRC16
Request
EOF
8 bits
D2h
02h
16 bits
Table 101.
Initiate Initiated response format
Response
SOF
Response
_flags
DSFID
UID
CRC16
Response
EOF
8 bits
8 bits
64 bits
16 bits
Figure 73.
Initiate frame exchange between VCD and M24LR04E-R
VCD
SOF
Initiate
request
EOF
M24LR04E-R
<-t1-> SOF
Initiate
response
EOF



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