FM24C02B/04B/08B/16B
2-Wire Serial EEPROM
Data Sheet
Aug. 2018
Note: 1. FM24C04B is not recommended for new design,
please refer to FM24C04D datasheet.
2. FM24C08B is not recommended for new design,
please refer to FM24C08D datasheet.
3. FM24C16B is not recommended for new design
please refer to FM24C16D datasheet.
Data Sheet
FM24C02B/04B/08B/16B 2-Wire Serial EEPROM
Ver 2.2
1
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Data Sheet
FM24C02B/04B/08B/16B 2-Wire Serial EEPROM
Ver 2.2
2
Description
The FM24C02B/04B/08B/16B provides low operation voltage of
2048/4096/8192/16384 bits of serial electrically erasable and
programmable read-only memory (EEPROM) organized as
256/512/1024/2048 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
PDIP8
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Features
Low Operation Voltage: V
CC
= 1.7V to 3.6V
5V tolerant I/O
Internally Organized: 256 x 8 (2K), 512 x 8 (4K),
1024 x 8 (8K) or 2048 x 8 (16K)
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise
Suppression
Bi-directional Data Transfer Protocol
1MHz (3.6V, 2.7V, 2.5V) and 400 kHz (1.7V)
Compatibility
Write Protect Pin for Hardware Data Protection
8-byte Page (2K), 16-byte Page (4K, 8K, 16K) 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 Package (RoHS Compliant)
SOP8, TSSOP8, TDFN8,TSOT23-5L Packages
(RoHS Compliant and Halogen-free)
Wafer Sales: available in Wafer Form
A0
A1
A2
GND
1
2
3
4
SOP8
8
7
6
5
VCC
WP
SCL
SDA
TSSOP8
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
TSOT23-5L
SCL
GND
SDA
Vcc
WP
TDFN8
A0
A1
A2
GND
1
2
3
4
8
7
6
5
Vcc
WP
SCL
SDA
Absolute Maximum Ratings
Pin Configurations
Operating Temperature
Storage Temperature
Voltage on Any Pin with Respect to Ground
Maximum Operating Voltage
DC Output Current
-55° to +125°
C
C
-65° to +150°
C
C
-1.0V to +7.0V
6.25V
5.0 mA
Pin Name
A0~A2
SDA
SCL
WP
V
CC
GND
Function
Device Address Inputs
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
FM24C02B/04B/08B/16B 2-Wire Serial EEPROM
Ver 2.2
3
Figure 1．Block Diagram
WP
WRITE PROTECT
LOGIC
CONTROL
LOGIC
EN
HV PUMP & TIMING
HV
A0
A1
A2
DEVICE ADDRESS
COMPARATOR
DATA BUFFER
X DECODER
DATA WORD
ADDRESS COUNTER
EEPROM
SCL
START STOP LOGIC
SDA
ACK
D
in
D
out
DATA & ACK
INPUT/OUTPUT LOGIC
DATA
SERIAL MUX
OD OUTPUT
Y DECODER
Data Sheet
FM24C02B/04B/08B/16B 2-Wire Serial EEPROM
Ver 2.2
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, A0):
The A2,
A1 and A0 pins are device address inputs that are
hard wired for the FM24C02B. As many as eight 2K
devices may be addressed on a single bus system
(device addressing is discussed in detail under the
Device Addressing section).
The FM24C04B only uses the A2、A1 input for
hardwire addressing and a total of four 4K devices
may be addressed on a single bus system. The A0
pin is no connect and can be connected to ground
(device addressing is discussed in detail under the
Device Addressing section).
The FM24C08B only uses the A2 input for hardwire
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).
The FM24C16B does not use the device address
pins, which limits the number of devices on a
single bus to one. The A0, A1 and A2 pins are no
connects.
WRITE PROTECT (WP):
The FM24C02B/04B/08B/16B
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
WP=V
CC
WP=GND
FM24C02B
Full (2K) Array
Part of the Array Protected
FM 24C04B
FM 24C08B
Full (4K) Array
Full (8K) Array
Normal Read/Write Operations
FM 24C16B
Full (16K) Array
Memory Organization
FM24C02B, 2K SERIAL EEPROM:
Internally organized
with 32 pages of 8 bytes each, the 2K requires an
8-bit data word address for random word
addressing.
FM24C04B, 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.
FM24C08B, 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.
FM24C16B, 16K SERIAL EEPROM:
Internally organized
with 128 pages of 16 bytes each, the 16K requires
an 11-bit data word address for random word
addressing.
Data Sheet
FM24C02B/04B/08B/16B 2-Wire Serial EEPROM
Ver 2.2
5
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