M24LR64E-RDW6T/2 STMicroelectronics, M24LR64E-RDW6T/2 Datasheet - Page 109

• Manufacturer Part Number: M24LR64E-RDW6T/2
• Description: EEPROM 64Kbit EEProm 400kHz 13.56Mhz 1.8 to 5.5V
• Manufacturer: STMicroelectronics

Specifications of M24LR64E-RDW6T/2

• Rohs: yes
• Memory Size: 64 Kbit
• Organization: 8192 x 8
• Data Retention: 40 yr
• Maximum Clock Frequency: 400 kHz
• Maximum Operating Current: 20 uA
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 90 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Access Time: 900 ns
• Interface Type: I2C
• Minimum Operating Temperature: 0 C
• Operating Current: 20 uA
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 1.8 V

M24LR64E-R
26.20
Figure 71. Fast Initiate frame exchange between VCD and M24LR64E-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 M24LR64E-R response.
When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z state.
Fast Read Multiple Block
On receiving the Fast Read Multiple Block command, the M24LR64E-R reads the selected
blocks and sends back their value in multiples of 32 bits in the response. The blocks are
numbered from 00h to 1FFh in the request and the value is minus one (–1) in the field. For
example, if the “Number of blocks” field contains the value 06h, seven blocks are read. The
maximum number of blocks is fixed to 32 assuming that they are all located in the same
sector. If the number of blocks overlaps sectors, the M24LR64E-R returns an error code.
The Protocol_extension_flag should be set to 1 for the M24LR64E-R to operate correctly. If
the Protocol_extension_flag is at 0, the M24LR64E-R answers with an error code.
The Option_flag is supported. The data rate of the response is multiplied by 2.
The subcarrier_flag should be set to 0, otherwise the M24LR64E-R answers with an error
code.
Table 95.
1. Gray color means that the field is optional.
Request parameters:
Request
M24LR64E-R
SOF
Request flag
UID (Optional)
First block number
Number of blocks
VCD
Request_
8 bits
flags
Fast Read Multiple Block request format
SOF
Multiple
Block
Read
Fast
C3h
Fast Initiate
request
Doc ID 022712 Rev 3
IC Mfg
code
02h
EOF
64 bits
UID
(1)
<-t
1
-> SOF
number
16 bits
block
First
Number
blocks
Fast Initiate
8 bits
response
of
Command codes
CRC16
16 bits
EOF
Request
109/140
EOF