M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 88

• 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
26.5
88/142
Read Multiple Block
When receiving the Read Multiple Block command, the M24LR04E-R reads the selected
blocks and sends back their value in multiples of 32 bits in the response. The blocks are
numbered from 00h to 1FFh in the request and the value is minus one (–1) in the field. For
example, if the “Number of blocks” field contains the value 06h, seven blocks are read. The
maximum number of blocks is fixed at 32 assuming that they are all located in the same
sector. If the number of blocks overlaps sectors, the M24LR04E-R returns an error code.
The Protocol_extension_flag should be set to 0 for the M24LR04E-R to operate correctly.
Table 47.
1. Gray means that the field is optional.
Request parameters:
Table 48.
1. Gray means that the field is optional.
2. Repeated as needed.
Response parameters:
Table 49.
Table 50.
Request
Response
Response SOF
Reserved for future
SOF
b
SOF
7
Request flags
UID (optional)
First block number
Number of blocks
Sector security status if Option_flag is set (see
N blocks of data
use. All at 0.
b
Request_
6
Response_
flags
8 bits
Read Multiple Block request format
Read Multiple Block response format when Error_flag is NOT set
Sector security status
Read Multiple Block response format when Error_flag is set
8 bits
flags
b
Response_flags
5
Multiple
Block
Read
23h
8 bits
control bits
b
Password
4
status
security
8 bits
Sector
Doc ID 022208 Rev 5
b
(2)
3
(1)
64 bits
UID
Error code
protection bits
b
(1)
Read / Write
2
8 bits
32 bits
Data
b
number
Table
1
block
8 bits
First
(2)
0: Current sector not locked
1: Current sector locked
49)
CRC16
16 bits
of blocks
Number
8 bits
CRC16
16 bits
CRC16
b
16 bits
0
Response EOF
M24LR04E-R
Response
Request
EOF
EOF