FM24C04U Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – 4K-Bit Standard 2-Wire Bus Interface Serial EEPROM

August 2000
FM24C04U/05U – 4K-Bit Standard 2-Wire Bus
Interface Serial EEPROM
General Description
The FM24C04U/05U devices are 4096 bits of CMOS non-volatile
electrically erasable memory. These devices conform to all speci-
fications in the Standard IIC 2-wire protocol. They are designed to
minimize device pin count and simplify PC board layout require-
ments.
The upper half (upper 2Kbit) of the memory of the FM24C05U can
be write protected by connecting the WP pin to V_CC. This section of
memory then becomes unalterable unless WP is switched to V_SS.
This communications protocol uses CLOCK (SCL) and DATA
I/O (SDA) lines to synchronously clock data between the master
(for example a microprocessor) and the slave EEPROM device(s).
The Standard IIC protocol allows for a maximum of 16K of
EEPROM memory which is supported by the Fairchild family in
2K, 4K, 8K, and 16K devices, allowing the user to configure the
memory as the application requires with any combination of
EEPROMs. In order to implement higher EEPROM memory
densities on the IIC bus, the Extended IIC protocol must be used.
(Refer to the FM24C32 or FM24C65 datasheets for more informa-
tion.)
Fairchild EEPROMs are designed and tested for applications requir-
ing high endurance, high reliability and low power consumption.
Features
I Extended operating voltage 2.7V – 5.5V
I 400 KHz clock frequency (F) at 2.7V - 5.5V
I 200µA active current typical
10µA standby current typical
1µA standby current typical (L)
0.1µA standby current typical (LZ)
I IIC compatible interface
– Provides bi-directional data transfer protocol
I Sixteen byte page write mode
– Minimizes total write time per byte
I Self timed write cycle
Typical write cycle time of 6ms
I Hardware Write Protect for upper half (FM24C05U only)
I Endurance: 1,000,000 data changes
I Data retention greater than 40 years
I Packages available: 8-pin DIP, 8-pin SO, and 8-pin TSSOP
I Available in three temperature ranges
- Commercial: 0° to +70°C
- Extended (E): -40° to +85C
- Automotive (V): -40° to +125°C
Block Diagram
VCC
VSS
WP
SDA
SCL
A2
A1
START
STOP
LOGIC
SLAVE ADDRESS
REGISTER &
COMPARATOR
CONTROL
LOGIC
WORD
ADDRESS
COUNTER
R/W
XDEC
H.V. GENERATION
TIMING &CONTROL
E2PROM
ARRAY
YDEC
CK
DIN
DATA REGISTER
DOUT
© 2000 Fairchild Semiconductor International
1
FM24C04U/05U Rev. A.3
www.fairchildsemi.com