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FM24C128 Datasheet

  • FM24C128

  • 128K-Bit Standard 2-Wire Bus Interface Serial EEPROM

  • 13頁

  • FAIRCHILD

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FM24C128 鈥?128K-Bit Standard 2-Wire Bus Interface Serial EEPROM
May 2001
FM24C128 鈥?128K-Bit Standard 2-Wire Bus
Interface Serial EEPROM
General Description
FM24C128 is a 128Kbit CMOS non-volatile serial EEPROM
organized as 16K x 8 bit memory. This device confirms to
Extended IIC 2-wire protocol that allows accessing of memory in
excess of 16Kbit on an IIC bus. This serial communication protocol
uses a Clock signal (SCL) and a Data signal (SDA) to synchro-
nously clock data between a master (e.g. a microcontroller) and a
slave (EEPROM). FM24C128 is designed to minimize pin count
and simplify PC board layout requirements.
FM24C128 offers hardware write protection where by the entire
memory array can be write protected by connecting WP pin to V
CC
.
The entire memory then becomes unalterable until the WP pin is
switched to V
SS
.
鈥淟Z鈥?and 鈥淟鈥?versions of FM24C128 offer very low standby current
making them suitable for low power applications. This device is
offered in SO, TSSOP and DIP packages.
Fairchild EEPROMs are designed and tested for applications
requiring high endurance, high reliability and low power consump-
tion.
Features
I
Extended operating voltage: 2.5V to 5.5V
I
Up to 400 KHz clock frequency at 2.5V to 5.5V
I
Low power consumption
鈥?0.5mA active current typical
鈥?10碌A(chǔ) standby current typical
鈥?1碌A(chǔ) standby current typical (L version)
鈥?0.1碌A(chǔ) standby current typical (LZ version)
I
Schmitt trigger inputs
I
64 byte page write mode
I
Self timed write cycle (6ms max)
I
Hardware Write Protection for the entire array
I
Endurance: up to 100K data changes
I
Data Retention: Greater than 40 years
I
Packages: 8-Pin DIP, 8-Pin SO and 8-Pin TSSOP
I
Temperature range
鈥?Commercial: 0擄C to +70擄C
鈥?Industrial (E): -40擄C to +85擄C
鈥?Automotive (V): -40擄C to +125擄C
Block Diagram
VSS
VCC
WP
SDA
START
STOP
LOGIC
CONTROL
LOGIC
SLAVE ADDRESS
REGISTER &
COMPARATOR
E2PROM
ARRAY
WRITE
LOCKOUT
H.V. GENERATION
TIMING &CONTROL
SCL
XDEC
A2
A1
A0
WORD
ADDRESS
COUNTER
R/W
YDEC
CK
DIN
DATA REGISTER
DOUT
漏 2001 Fairchild Semiconductor Corporation
FM24C128 Rev. B.1
1
www.fairchildsemi.com

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