FM24C128D
2-Wire Serial EEPROM
With Unique ID and Security Sector
Data Sheet
Feb. 2017
FM24C128D 2-Wire Serial EEPROM
Ver 0.1
Data Sheet
1
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Shanghai Fudan Microelectronics Group Co., Ltd or its subsidiaries in China.
Shanghai Fudan Microelectronics Group Co., Ltd, Printed in the China, All Rights Reserved.
FM24C128D 2-Wire Serial EEPROM
Ver 0.1
Data Sheet
2
Description
The FM24C128D provides 131,072 bits of serial
electrically erasable and programmable read-only
memory (EEPROM) organized as 16,384 words of
8 bits each, with 128-bit UID and 64-byte Security
Sector. The device‟s cascadable feature allows up
to 8 devices to share a common 2-wire bus. The
device is optimized for use in many industrial and
commercial applications where low-power and
low-voltage operations are essential.
Packaging Type
SOP 8
NC
NC
NC
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
TSSOP 8
NC
NC
NC
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Features
Low Operation Voltage: V
CC
= 1.6V to 5.5V
Internally Organized: 16,384 x 8
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise
Suppression
Bi-directional Data Transfer Protocol
1MHz (2.5V~5.5V) and 400 kHz (1.6V)
Compatibility
Write Protect Pin for Hardware Data Protection
64-Byte Page Write Modes (Partial Page
Writes are Allowed)
Lockable 64-Byte Security Sector
128-Bit Unique ID for each device
Self-timed Write Cycle (5 ms max)
High-reliability
–
Endurance: 1,000,000 Write Cycles
–
Data Retention: 40 Years
SOP8, TSSOP8, TDFN8 and Thin 4-ball
WLCSP Packages (RoHS Compliant and
Halogen-free)
TDFN8 (2x3mm)
NC
NC
NC
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Thin 4-ball WLCSP
VCC
GND
SCL
SDA
(TOP VIEW)
Pin Configurations
Pin Name
SDA
SCL
WP
V
CC
GND
NC
Function
Serial Data Input/Output
Serial Clock Input
Write Protect
Power Supply
Ground
Not Connect
Absolute Maximum Ratings
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
*
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.
FM24C128D 2-Wire Serial EEPROM
Ver 0.1
Data Sheet
3
Figure 1．Block Diagram
WP
WRITE PROTECT
LOGIC
CONTROL
LOGIC
EN
HV PUMP & TIMING
HV
DEVICE ADDRESS
COMPARATOR
DATA BUFFER
X DECODER
DATA WORD
ADDRESS COUNTER
128-bit
Unique
ID
ACK
EEPROM
SCL
START STOP LOGIC
SDA
SEC SECTOR
D
in
DATA
SERIAL MUX
D
out
OD OUTPUT
DATA & ACK
INPUT/OUTPUT LOGIC
Y DECODER
FM24C128D 2-Wire Serial EEPROM
Ver 0.1
Data Sheet
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.
WRITE PROTECT (WP):
The FM24C128D has a
Write Protect pin that provides hardware data
protection. The WP pin allows normal write operations
when connected to ground (GND). When the Write
Protect pin is connected to VCC, all write operations
to the memory are inhibited. If the pin is left floating,
the WP pin will be internally pulled down to GND if
the capacitive coupling to the circuit board Vcc plane
is <3pF. If coupling is >3pF, FMSH recommends
connecting the WP to GND. Switching WP to VCC
prior to a write operation creates a software write
protected function.
Write Protect Description
WP Pin Status
WP=V
CC
WP=GND
Part of the Memory Protected
FM24C128D
Full Memory
Normal Read/Write Operations
Memory Organization
FM24C128D, 128K SERIAL EEPROM:
Internally organized with 256 pages of 64 bytes each, the 128K
requires a 14-bit data word address for random word addressing.
Security Sector
：
The FM24C128D offers 64-byte Security Sectors which can be written and (later)
permanently locked in Read-only mode. This memory may be used by the system manufacturers to store
security and other important information separately from the main memory array.
128 bits Unique:
The FM24C128D offers 128-bit Unique ID which can only be read.
Configurable Device Address:
Since there are no A0, A1, A2 pins, FM24C128D provides Configurable Device
Address features. When power-on, the device will load the device address Configurations automatically. The CDA
contains C0/C1/C2/CX four NVM bits. When CX is set to „1b‟, the device responds to all device address. Otherwise,
the device only responds to the same device address as how C2/C1/C0 is set. The CDA factory default value is
„0001b‟.
CDA WREN:
FM24C128D offers a volatile register to protect CDA from unexpected write operation. Before
writing CDA, the „CDA WREN‟ register must be previously set to 1. Because the register will be automatically
set to 0 after any read or write operation, the following command must be a „Write CDA‟ command. The
default value of „CDA WREN‟ register after power-on is 0b.
Byte Number
Device ADDR
Page ADDR
63
··
·
0
0
1
1010
2
Data Memory (256P X 64B)
··
·
255
xxxx x00x
1011
Security Sector (1P X 64B)
xxxx xxxx
1
xxxx x01x
1011
128 Bits Unique ID（UID）
xxxx xxxx
2
xxxx x10x
1011
1 Bit Lock Bit（LB）
xxxx xxxx
3
Data Sheet
5
FM24C128D 2-Wire Serial EEPROM
Ver 0.1
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