M24LR04E-RDW6T/2 STMicroelectronics, M24LR04E-RDW6T/2 Datasheet - Page 63
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M24LR04E-RDW6T/2
Manufacturer Part Number
M24LR04E-RDW6T/2
Description
EEPROM 4-Kbit Dual EEPROM 1.8 to 5.5V 13.56Mhz
Manufacturer
STMicroelectronics
Datasheet
1.M24LR04E-RDW6T2.pdf
(142 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M24LR04E-RDW6T/2
Manufacturer:
ST
Quantity:
20 000
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M24LR04E-R
16
M24LR04E-R protocol description
The transmission protocol (or simply “the protocol”) defines the mechanism used to
exchange instructions and data between the VCD and the M24LR04E-R in both directions.
It is based on the concept of “VCD talks first”.
This means that an M24LR04E-R does not start transmitting unless it has received and
properly decoded an instruction sent by the VCD. The protocol is based on an exchange of:
Each request and each response are contained in a frame. The frame delimiters (SOF,
EOF) are described in
Each request consists of:
Each response consists of:
The protocol is bit-oriented. The number of bits transmitted in a frame is a multiple of eight
(8), that is an integer number of bytes.
A single-byte field is transmitted least significant bit (LSBit) first. A multiple-byte field is
transmitted least significant byte (LSByte) first and each byte is transmitted least significant
bit (LSBit) first.
The setting of the flags indicates the presence of the optional fields. When the flag is set (to
one), the field is present. When the flag is reset (to zero), the field is absent.
Table 23.
Table 24.
Request SOF Request_flags
Response
SOF
a request from the VCD to the M24LR04E-R,
a response from the M24LR04E-R to the VCD.
a request SOF (see
flags,
a command code,
parameters depending on the command,
application data,
a 2-byte CRC,
a request EOF (see
an answer SOF (see
flags,
parameters depending on the command,
application data,
a 2-byte CRC,
an answer EOF (see
Response_flags
VCD request frame format
M24LR04E-R Response frame format
Section 12: M24LR04E-R to VCD
Figure 20
Figure
Figure 35
Figure 41
Doc ID 022208 Rev 5
Parameters
Command
22).
code
and
to
to
Figure
Figure
Figure
Parameters
40),
46).
21),
Data
M24LR04E-R protocol description
frames.
Data
2-byte CRC
2-byte CRC
Response
Request
EOF
EOF
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