M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 116

• 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
26.24
116/142
When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that
starts the ReadCfg command to the end of the M24LR04E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z
state.
WriteEHCfg
On receiving the WriteEHCfg command, the M24LR04E-R writes the data contained in the
request to the Configuration byte and reports whether the write operation was successful 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 supported, the Inventory_flag is not supported.
During the RF write cycle W
otherwise, the M24LR04E-R may not program correctly the data into the Configuration byte.
The W
Table 105. WriteEHCfg request format
1. Gray means that the field is optional.
Request parameters:
Table 106. WriteEHCfg response format when Error_flag is NOT set
Response parameter:
Table 107. WriteEHCfg response format when Error_flag is set
Response parameter:
Request
Response SOF
Response
SOF
SOF
Request flags
UID (optional)
Data: during WriteEHCfg command, bit 3 of the data is ignored (see
No parameter. The response is send back after the writing cycle.
Error code as Error_flag is set:
–
t
time is equal to t
13h: the specified block was not successfully programmed
Request_
8 bits
flags
Response_
8 bits
flags
Response_flags
WriteEHCfg
8 bits
1nom
A1h
t
, there should be no modulation (neither 100% nor 10%),
+ 18 × 302 µs.
Doc ID 022208 Rev 5
Error code
8 bits
IC Mfg
code
02h
64 bits
CRC16
UID
16 bits
(1)
CRC16
16 bits
8 bits
Data
Table
CRC16
Response EOF
16 bits
M24LR04E-R
14).
Response
Request
EOF
EOF