FM24C64 Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – 64K-Bit Standard 2-Wire Bus Interface Serial EEPROM

FM24C64 – 64K-Bit Standard 2-Wire Bus
Interface Serial EEPROM
December 2001
General Description
FM24C64 is a 64Kbit CMOS non-volatile serial EEPROM orga-
nized as 8K 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 synchronously
clock data between a master (e.g. a microcontroller) and a slave
(EEPROM). FM24C64 is designed to minimize pin count and
simplify PC board layout requirements.
FM24C64 offers hardware write protection where by the entire
memory array can be write protected by connecting WP pin to V_CC.
This section of memory then becomes unalterable until the WP pin
is switched to V_SS.
“LZ” and “L” versions of FM24C64 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
— 0.5mA active current typical
— 10µA standby current typical
— 1µA standby current typical (L version)
— 0.1µA standby current typical (LZ version)
I Schmitt trigger inputs
I 32 byte page write mode
I Self timed write cycle (6ms typical)
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
— Commercial: 0°C to +70°C
— Industrial (E): -40°C to +85°C
— Automotive (V): -40°C to +125°C
Block Diagram
VSS
VCC
WP
SDA
SCL
A2
A1
A0
WRITE
LOCKOUT
START
STOP
LOGIC
SLAVE ADDRESS
REGISTER &
COMPARATOR
CONTROL
LOGIC
WORD
ADDRESS
COUNTER
R/W
DIN
H.V. GENERATION
TIMING &CONTROL
XDEC
E2PROM
ARRAY
YDEC
CK
DATA REGISTER
DOUT
© 2001 Fairchild Semiconductor Corporation
1
FM24C64 Rev. C
www.fairchildsemi.com