M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 84

• 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
26.4
84/142
Figure 54. Read Single Block 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 Read Single Block 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.
Write Single Block
On receiving the Write Single Block command, the M24LR04E-R writes the data contained
in the request to the requested block 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.
During the RF write cycle W
otherwise, the M24LR04E-R may not program correctly the data into the memory. The W
time is equal to t
Table 44.
1. Gray means that the field is optional.
Request parameters:
Table 45.
Response parameter:
Request
M24LR04E-R
Response SOF
SOF
VCD
Request flags
UID (optional)
Block number
Data
No parameter. The response is send back after the writing cycle.
Request_
8 bits
flags
Write Single Block request format
Write Single Block response format when Error_flag is NOT set
SOF
1nom
Response_flags
Single
+ 18 × 302 µs.
Block
Write
Read Single Block
21h
8 bits
request
t
, there should be no modulation (neither 100% nor 10%),
Doc ID 022208 Rev 5
64 bits
UID
(1)
EOF
<-t
CRC16
number
1
16 bits
Block
-> SOF
8 bits
Read Single Block
32 bits
Data
response
CRC16
Response EOF
16 bits
M24LR04E-R
EOF
Request
EOF
t