M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 108

• 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
26.18
108/142
Response parameter:
.
Figure 70. Fast 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 Fast 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.
Fast Inventory Initiated
Before receiving the Fast Inventory Initiated command, the M24LR04E-R must have
received an Initiate or a Fast Initiate command in order to set the Initiate_ flag. If not, the
M24LR04E-R does not answer to the Fast Inventory Initiated command.
The subcarrier_flag should be set to 0, otherwise the M24LR04E-R answers with an error
code.
On receiving the Fast Inventory Initiated request, the M24LR04E-R runs the anticollision
sequence. The Inventory_flag must be set to 1. The meaning of flags 5 to 8 is shown in
Table
The request contains:
The M24LR04E-R does not generate any answer in case of error.
Table 90.
Request
M24LR04E-R
SOF
Error code as Error_flag is set:
–
–
the flags,
the Inventory command code,
the AFI if the AFI flag is set,
the mask length,
the mask value,
the CRC.
29. The data rate of the response is multiplied by 2.
VCD
10h: the specified block is not available
15h: the specified block is read protected
Request
_flags
8 bits
Fast Inventory Initiated request format
SOF
Inventory
Initiated
Fast
C1h
Fast Read Single
Block request
Doc ID 022208 Rev 5
IC Mfg
code
02h
Optional
8 bits
AFI
EOF
length
Mask
8 bits
<-t
1
-> SOF
Mask value
0 - 64 bits
Fast Read Single
Block response
CRC16
16 bits
M24LR04E-R
Request
EOF
EOF