M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 110

• 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
26.19
110/142
Fast Initiate
On receiving the Fast Initiate command, the M24LR04E-R sets the internal Initiate_flag and
sends back a response only if it is in the Ready state. The command has to be issued in the
Non Addressed mode only (Select_flag is reset to 0 and Address_flag is reset to 0). If an
error occurs, the M24LR04E-R does not generate any answer. The Initiate_flag is reset after
a power-off of the M24LR04E-R. The data rate of the response is multiplied by 2.
The subcarrier_flag should be set to 0, otherwise the M24LR04E-R answers with an error
code.
The request contains:
Table 92.
The response contains:
Table 93.
Figure 71. Fast Initiate 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 Fast Initiate 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.
Response
Request
M24LR04E-R
SOF
SOF
No data
the flags,
the Unique ID.
VCD
Request_flags
Response
Fast Initiate request format
Fast Initiate response format
_flags
8 bits
8 bits
SOF
DSFID
8 bits
Fast Initiate
Initiate
request
Doc ID 022208 Rev 5
Fast
C2h
IC Mfg
Code
02h
EOF
64 bits
UID
<-t
1
-> SOF
CRC16
16 bits
Fast Initiate
response
CRC16
16 bits
M24LR04E-R
Response
Request
EOF
EOF
EOF