m24lr16e-r STMicroelectronics, m24lr16e-r Datasheet - Page 97

• Manufacturer Part Number: m24lr16e-r
• Description: 16 Kbit Eeprom With Password Protection, Dual Interface & Energy Harvesting 400 Khz I²c Bus & Iso 15693 Rf Protocol At 13.56 Mhz
• Manufacturer: STMicroelectronics

M24LR16E
26.11
Figure 63. Write DSFID frame exchange between VCD and M24LR16E-R
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the Write DSFID 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 DSFID command to
beginning of the M24LR16E-R response).
Lock DSFID
On receiving the Lock DSFID request, the M24LR16E-R locks the DSFID value
permanently. The Option_flag is supported.
During the RF write cycle W
otherwise, the M24LR16E-R may not lock correctly the DSFID value in memory. The W
is equal to t
Table 66.
1. Gray means that the field is optional.
Request parameter:
●
●
Table 67.
Request
Response
M24LR16E-R
M24LR16E-R
SOF
SOF
Request flags
UID (optional)
VCD
Request_
1nom
8 bits
Lock DSFID request format
flags
Lock DSFID response format when Error_flag is NOT set
Response_flags
+ 18 × 302 µs.
SOF
8 bits
DSFID
Lock
2Ah
Write DSFID
request
t
, there should be no modulation (neither 100% nor 10%),
Doc ID 018932 Rev 7
EO
F
<-t
<---------------- W
64 bits
1
UID
->
(1)
SO
F
>
Write DSFID
CRC16
16 bits
response
t
------------
EO
SO
F
F
CRC16
16 bits
Write DSFID
Command codes
response
Write sequence
when error
Response
Request
EOF
EOF
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EOF
t
time