M24LR16E-RDW6T/2 STMicroelectronics, M24LR16E-RDW6T/2 Datasheet - Page 69

• Manufacturer Part Number: M24LR16E-RDW6T/2
• Description: EEPROM 16kB EEPROM Dual INT 400 kHz IC2 13.56MHz
• Manufacturer: STMicroelectronics

Specifications of M24LR16E-RDW6T/2

• Product Category: EEPROM
• Rohs: yes
• Memory Size: 16 Kbit
• Organization: 256 x 8
• Data Retention: 40 yr
• Maximum Clock Frequency: 400 KHz
• Maximum Operating Current: 50 mA
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Access Time: 900 ns
• Interface Type: 2-Wire Serial, I2C
• Minimum Operating Temperature: -40 C
• Operating Current: 50 mA

M24LR16E-R
19
19.1
Request format
The request consists of:
Table 26.
Request flags
In a request, the “flags” field specifies the actions to be performed by the M24LR16E-R and
whether corresponding fields are present or not.
The flags field consists of eight bits. Bit 3 (Inventory_flag) of the request flag defines the
contents of the four MSBs (bits 5 to 8). When bit 3 is reset (0), bits 5 to 8 define the
M24LR16E-R selection criteria. When bit 3 is set (1), bits 5 to 8 define the M24LR16E-R
Inventory parameters.
Table 27.
1. Subcarrier_flag refers to the M24LR16E-R-to-VCD communication.
2. Data_rate_flag refers to the M24LR16E-R-to-VCD communication.
3. Protocol_extension_flag must be set to 1 for commands: Read Single Block, Read Multiple Block, Fast
S
O
Bit No
F
Bit 1
Bit 2
Bit 3
Bit 4
Read Multiple Block, Write Single Block, Get Multiple Block Security Status. Command Get System Info
supports two options: a standard response format when Protocol_extension_flag is set to 0, and a rich
response when protocol extension is set to 1.
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 018932 Rev 8
(3)
Level
0
1
0
1
0
1
0
1
A single subcarrier frequency is used by the
M24LR16E-R
Two subcarrier are used by the M24LR16E-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 28
Table 29
CRC
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