M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 104

• 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
26.16
104/142
Response parameter:
Table 82.
Response parameter:
Figure 68. Lock-sector 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 Lock-sector 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 Lock sector command to the
beginning of the M24LR04E-R response).
Present-sector Password
On receiving the Present-sector Password command, the M24LR04E-R compares the
requested password with the data contained in the request and reports whether the
operation has been successful in the response. The Option_flag is supported.
During the comparison cycle equal to W
10%), otherwise, the M24LR04E-R the Password value may not be correctly compared. The
W
After a successful command, the access to all the memory blocks linked to the password is
changed as described in
Response
M24LR04E-R
M24LR04E-R
t
time is equal to t
SOF
No parameter
Error code as Error_flag is set:
–
–
–
VCD
10h: the specified block is not available
11h: the specified block is already locked and thus cannot be locked again
14h: the specified block was not successfully locked
Lock-sector response format when Error_flag is set
Response_
SOF
flags
8 bits
1nom
Lock-sector
request
+ 18 × 302 µs.
Section 4.1: M24LR04E-R block security in RF
Doc ID 022208 Rev 5
Error code
8 bits
EOF
t
<--------------- W
<-t
, there should be no modulation (neither 100% nor
1
-> SOF
Lock-sector
t
response
-----------> SOF
CRC16
16 bits
EOF
Lock-sector
response
mode.
Lock sequence
when error
M24LR04E-R
Response
EOF
EOF