M24LR64-RDW6T/2 STMicroelectronics, M24LR64-RDW6T/2 Datasheet - Page 63

• Manufacturer Part Number: M24LR64-RDW6T/2
• Description: 13.56MHZ 64KBIT EEPROM 8 TSSOP
• Manufacturer: STMicroelectronics

Specifications of M24LR64-RDW6T/2

• Featured Product: STM32 Cortex-M3 Companion Products
• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: 64 Kbit EEPROM
• Package / Case: 8-TSSOP
• Memory Size: 64 KB
• Organization: 2 K x 32
• Interface Type: I2C
• Maximum Clock Frequency: 400 KHz
• Access Time: 900 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Current: 600 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10487-2

M24LR64-R
19
19.1
Request format
The request consists of:
●
●
●
●
●
●
Table 23.
Request flags
In a request, the “flags” field specifies the actions to be performed by the M24LR64-R and
whether corresponding fields are present or not.
The flags field consists of eight bits. The bit 3 (Inventory_flag) of the request flag defines the
contents of the 4 MSBs (bits 5 to 8). When bit 3 is reset (0), bits 5 to 8 define the M24LR64-
R selection criteria. When bit 3 is set (1), bits 5 to 8 define the M24LR64-R Inventory
parameters.
Table 24.
1. Subcarrier_flag refers to the M24LR64-R-to-VCD communication.
2. Data_rate_flag refers to the M24LR64-R-to-VCD communication
S
O
Bit No
Bit 1
Bit 2
Bit 3
Bit 4
F
an SOF
flags
a command code
parameters and data
a CRC
an EOF
Request_flags
Subcarrier_flag
Data_rate_flag
Inventory_flag
Protocol_extension_flag
General request format
Definition of request flags 1 to 4
Flag
(2)
(1)
Command code
Doc ID 15170 Rev 12
Level
0
1
0
1
0
1
0
1
A single subcarrier frequency is used by the M24LR64-R
Two subcarrier are used by the M24LR64-R
Low data rate is used
High data rate is used
The meaning of flags 5 to 8 is described in
The meaning of flags 5 to 8 is described in
No Protocol format extension
Protocol format extension
Parameters
Description
Data
Request format
Table 25
Table 26
CRC
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O
E
F