M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 96

• Manufacturer Part Number: M24LR04E-RDW6T/2
• Description: EEPROM 4-Kbit Dual EEPROM 1.8 to 5.5V 13.56Mhz
• Manufacturer: STMicroelectronics

Specifications of M24LR04E-RDW6T/2

• Product Category: EEPROM
• Memory Size: 4 Kbit
• Maximum Clock Frequency: 400 KHz
• Maximum Operating Current: 20 uA
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Factory Pack Quantity: 1

Command codes
26.11
96/142
Figure 63. Write DSFID frame exchange between VCD and M24LR04E-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 M24LR04E-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 M24LR04E-R response).
Lock DSFID
On receiving the Lock DSFID request, the M24LR04E-R locks the DSFID value
permanently. The Option_flag is supported.
During the RF write cycle W
otherwise, the M24LR04E-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
M24LR04E-R
M24LR04E-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 022208 Rev 5
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
response
Write sequence
when error
M24LR04E-R
Response
Request
EOF
EOF
EOF
t
time