M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 115

• 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

M24LR04E-R
26.23
ReadCfg
On receiving the ReadCfg command, the M24LR04E-R reads the Configuration byte and
sends back its 8-bit value in the response.
The Protocol_extension_flag should be set to 0 for the M24LR04E-R to operate correctly. If
the Protocol_extension_flag is at 1, the M24LR04E-R answers with an error code. The
Option_flag is not supported. The Inventory_flag must be set to 0.
Table 102. ReadCfg request format
1. Gray means that the field is optional.
Request parameters:
Table 103. ReadCfg response format when Error_flag is NOT set
Response parameters:
Table 104. ReadCfg response format when Error_flag is set
Response parameter:
Figure 74. ReadCfg frame exchange between VCD and M24LR04E-R
Response
Request
Response SOF
M24LR04E-R
SOF
SOF
UID (optional)
One byte of data: Configuration byte
Error code as Error_flag is set
–
–
VCD
03h: the option is not supported
0Fh: error with no information given
Request_
8 bits
flags
Response_
8 bits
flags
SOF
Response_flags
ReadCfg
A0h
ReadCfg request
8 bits
Error code
Doc ID 022208 Rev 5
8 bits
IC Mfg code
02h
EOF
8 bits
Data
<-t
1
-> SOF ReadCfg response EOF
64 bits
UID
CRC16
16 bits
(1)
CRC16
16 bits
CRC16
16 bits
Command codes
Response
Response
EOF
Request
EOF
EOF
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