M24LR64-R_1006 Datasheet, PDF (110/128 Pages) STMicroelectronics – 64 Kbit EEPROM with password protection & dual interface

Commands codes
M24LR64-R
26.22
Initiate
On receiving the Initiate command, the M24LR64-R will set the internal Initiate_flag and
send 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 M24LR64-R does not generate any answer. The Initiate_flag is reset after
a power off of the M24LR64-R.
The request contains:
● No data
Table 97. Initiate request format
Request
SOF
Request_flags
Initiate
8 bits
D2h
IC Mfg
code
02h
CRC16
16 bits
Request
EOF
The response contains:
● the flags
● the Unique ID
Table 98. Initiate Initiated response format
Response Response
SOF
_flags
DSFID
UID
8 bits
8 bits
64 bits
CRC16
Response
EOF
16 bits
Figure 70. Initiate frame exchange between VCD and M24LR64-R
VCD
M24LR64
-R
SOF
Initiate
request
EOF
<-t₁-> SOF
Initiate
response
EOF
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Doc ID 15170 Rev 10