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What is 24LC04B?

This electronic component, produced by the manufacturer "MicrochipTechnology", performs the same function as "4K/8K2.5VI2CSerialEEPROMs".


24LC04B Datasheet PDF - MicrochipTechnology

Part Number 24LC04B
Description 4K/8K2.5VI2CSerialEEPROMs
Manufacturers MicrochipTechnology 
Logo MicrochipTechnology Logo 


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24AA04/24LC04B
4K I2CSerial EEPROM
Device Selection Table
Part
Number
VCC
Range
Max. Clock
Frequency
24AA04
1.7-5.5
400 kHz(1)
24LC04B 2.5-5.5
400 kHz
Note 1: 100 kHz for VCC <2.5V.
Temp.
Ranges
I
I, E
Features:
• Single Supply with Operation down to 1.7V for
24AA04 Devices, 2.5V for 24LC04B Devices
• Low-Power CMOS Technology:
- Read current 1 mA, typical
- Standby current 1 μA, typical
• 2-Wire Serial Interface, I2C™ Compatible
• Schmitt Trigger inputs for Noise Suppression
• Output Slope Control to eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 3 ms, typical
• Self-Timed Erase/Write Cycle
• 16-Byte Page Write Buffer
• Hardware Write-Protect
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention >200 Years
• Factory Programming Available
• Packages include 8-lead PDIP, SOIC, TSSOP,
DFN, TDFN, MSOP and 5-lead SOT-23 or 4-lead
Chip Scale
• Pb-Free and RoHS Compliant
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Package Types
PDIP/MSOP/SOIC/TSSOP
SOT-23-5
Description:
The Microchip Technology Inc. 24AA04/24LC04B
(24XX04*) is a 4 Kbit Electrically Erasable PROM. The
device is organized as two blocks of 256 x 8-bit
memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.7V, with standby
and active currents of only 1 μA and 1 mA,
respectively. The 24XX04 also has a page write
capability for up to 16 bytes of data. The 24XX04 is
available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, 2x3 DFN, 2x3 TDFN, and MSOP
packages and is also available in the 5-lead SOT-23, or
4-lead Chip Scale package.
Block Diagram
HV
WP Generator
I/O
Control
Logic
I/O
SCL
SDA
VCC
VSS
Memory
Control
Logic
XDEC
EEPROM
Array
Page
Latches
YDEC
Sense Amp.
R/W Control
DFN/TDFN
CS (Chip Scale)2
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SCL 1
Vss
SDA
2
3
5 WP
4 Vcc
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
VCC 1
SCL 3
2 VSS
4 SDA
(Top Down View,
Balls Not Visible)
Note 1: Pins A0, A1 and A2 are not used by the 24XX04. (No internal connections).
2: Available in I-temp, “AA” only.
* 24XX04 is used in this document as a generic part number for the 24LC04/24LC04B devices.
© 2009 Microchip Technology Inc.
DS21708K-page 1

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24LC04B equivalent
24AA04/24LC04B
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Name
A0
A1
A2
VSS
SDA
SCL
WP
VCC
PDIP
1
2
3
4
5
6
7
8
SOIC TSSOP
11
22
33
44
55
66
77
88
DFN
1
2
3
4
5
6
7
8
TDFN
1
2
3
4
5
6
7
8
MSOP
1
2
3
4
5
6
7
8
SOT23
2
3
1
5
4
CS Description
— Not Connected
— Not Connected
— Not Connected
2 Ground
4 Serial Address/Data I/O
3 Serial Clock
— Write-Protect Input
1 +1.7V to 5.5V Power Supply
2.1 Serial Address/Data Input/Output
(SDA)
SDA is a bidirectional pin used to transfer addresses
and data into and out of the device. Since it is an open-
drain terminal, the SDA bus requires a pull-up resistor
to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz).
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
reserved for indicating Start and Stop conditions.
2.2 Serial Clock (SCL)
The SCL input is used to synchronize the data transfer
to and from the device.
2.3 Write-Protect (WP)
The WP pin must be connected to either VSS or VCC.
If tied to VSS, normal memory operation is enabled
(read/write the entire memory 000-1FF).
If tied to VCC, write operations are inhibited. The entire
memory will be write-protected. Read operations are
not affected.
The Chip Scale package does not support the write-
protect feature.
2.4 A0, A1, A2
The A0, A1 and A2 pins are not used by the 24XX04.
They may be left floating or tied to either VSS or VCC.
© 2009 Microchip Technology Inc.
DS21708K-page 5


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24LC04B datasheet


1. 8K, 2.5V I2C serial EEPROM

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