FM24C04A/08A
2-Wire Serial EEPROM
Data Sheet
Sep. 2009
Data Sheet
FM24C04A/08A 2-Wire Serial EEPROM
Ver 1.2
1
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Data Sheet
FM24C04A/08A 2-Wire Serial EEPROM
Ver 1.2
2
Description
The FM24C04A/08A provides low operation voltage of 4096/8192
bits of serial electrically erasable and programmable read-only
memory (EEPROM) organized as 512/1024 words of 8 bits
each. The device is optimized for use in many industrial
and commercial applications where low-power and
low-voltage operations are essential.
Packaging Type
Features
Low Operation Voltage: V
CC
= 1.7V to 5.5V
5V tolerant I/O
Internally Organized: 512 x 8 (4K), 1024 x 8 (8K)
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise
Suppression
Bi-directional Data Transfer Protocol
1MHz (2.5V~5.5V) and 400 kHz (1.7V) Compatibility
Write Protect Pin for Hardware Data Protection
16-byte Page Write Modes
Partial Page Writes are Allowed
Self-timed Write Cycle (5 ms max)
High-reliability
–
Endurance: 1,000,000 Write Cycles
–
Data Retention: 100 Years
PDIP8, SOP8, TSSOP8 Packages (RoHS Compliant
and Halogen-free)
Absolute Maximum Ratings
Operating Temperature
(Plastic Package)
Operating Temperature
(Module Package)
Storage Temperature (Plastic Package)
Storage Temperature
(Module Package)
Voltage on Any Pin with Respect to
Ground
Maximum Operating Voltage
DC Output Current
-55°C to +125°C
-20°C to +60°C
-65°C to +150°C
-25°C to +70°C
-1.0V to +7.0V
6.25V
5.0 mA
Pin Configurations
Pin Name
A0~A2
NC
SDA
SCL
WP
V
CC
GND
Function
Device Address Inputs
Not Connect
Serial Data Input/Output
Serial Clock Input
Write Protect
Power Supply
Ground
*NOTICE: Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions beyond those indicated in the operational
sections of this specification are not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device
reliability.
Data Sheet
FM24C04A/08A 2-Wire Serial EEPROM
Ver 1.2
3
Figure 1．Block Diagram
Data Sheet
FM24C04A/08A 2-Wire Serial EEPROM
Ver 1.2
4
Pin Description
SERIAL CLOCK (SCL):
The SCL input is used to
positive edge clock data into each EEPROM device
and negative edge clock data out of each device.
SERIAL DATA (SDA):
The SDA pin is bi-directional
for serial data transfer. This pin is open-drain driven
and may be wire-ORed with any number of other
open-drain or open-collector devices.
DEVICE/PAGE ADDRESSES (A2, A1):
The FM24C04A
uses the A2 and A1 inputs for hard wire addressing
and a total of four 4K devices may be addressed on
a single bus system. The A0 pin is a no connect and
can be connected to ground (device addressing is
discussed in detail under the Device Addressing
section).
The FM24C08A only uses the A2 input for hardware
addressing and a total of two 8K devices may be
addressed on a single bus system. The A0 and A1
pins are no connects and can be connected to
ground (device addressing is discussed in detail
under the Device Addressing section).
WRITE PROTECT (WP):
The FM24C04A/08A has a
Write Protect pin that provides hardware data
protection. The Write Protect pin allows normal
read/write operations when connected to ground
(GND). When the Write Protect pin is connected to
V
CC,
the write protection feature is enabled.
Write Protect Description
WP Pin
Status
FM 24C04A
WP=V
CC
WP=GND
Full (4K) Array
Normal Read/Write Operations
Part of the Array Protected
FM 24C08A
Full (8K) Array
Memory Organization
FM24C04A, 4K SERIAL EEPROM:
Internally organized with 32 pages of 16 bytes each, the 4K requires a
9-bit data word address for random word addressing.
FM24C08A, 8K SERIAL EEPROM:
Internally organized with 64 pages of 16 bytes each, the 8K requires a 10-bit
data word address for random word addressing.
Data Sheet
FM24C04A/08A 2-Wire Serial EEPROM
Ver 1.2
5
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