M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 100

• 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
26.13
100/142
Get Multiple Block Security Status
When receiving the Get Multiple Block Security Status command, the M24LR04E-R sends
back the sector security status. The blocks are numbered from 00h to 01FFh in the request
and the value is minus one (–1) in the field. For example, a value of '06' in the “Number of
blocks” field requests to return the security status of seven blocks.
The Protocol_extension_flag should be set to 0 for the M24LR04E-R to operate correctly.
During the M24LR04E-R response, if the internal block address counter reaches 01FFh, it
rolls over to 0000h and the Sector Security Status bytes for that location are sent back to the
reader.
Table 72.
1. Gray means that the field is optional.
Request parameter:
Table 73.
1. Repeated as needed.
Response parameters:
Table 74.
Response
Request
Reserved for future use. All
SOF
SOF
b
Request flags
UID (optional)
First block number
Number of blocks
Sector security status (see
7
Request
at 0.
_flags
8 bits
Get Multiple Block Security Status request format
Get Multiple Block Security Status response format when Error_flag is
NOT set
Sector security status
b
Response_
6
flags
8 bits
b
Security
Multiple
5
Status
Block
2Ch
Get
Password control
Sector security
Doc ID 022208 Rev 5
b
4
Table
8 bits
status
bits
(1)
64 bits
74)
UID
b
3
(1)
protection bits
Read / Write
b
2
number
block
8 bits
First
b
1
CRC16
16 bits
of blocks
Number
0: Current sector not locked
1: Current sector locked
8 bits
CRC16
16 bits
b
0
M24LR04E-R
Response
Request
EOF
EOF