1998 Microchip Technology Inc. DS11183E-page 1
24C04A

FEATURES

• Low power CMOS technology
• Hardware write protect
• Two wire serial interface bus, I

2

C™ compatible
• 5.0V only operation
• Self-timed write cycle (including auto-erase)
• Page-write buffer
• 1 ms write cycle time for single byte
• 1,000,000 Erase/Write cycles guaranteed
• Data retention >200 years
• 8-pin DIP/SOIC packages
• Available for extended temperature ranges

DESCRIPTION

The Microchip Technology Inc. 24C04A is a 4K bit
Electrically Erasable PROM. The device is organized
as with a standard two wire serial interface. Advanced
CMOS technology allows a significant reduction in
power over NMOS serial devices. A special feature
provides hardware write protection for the upper half of
the block. The 24C04A has a page write capability of
up to eight bytes, and up to four 24C04A devices may
be connected to the same two wire bus.

This device offers fast (1ms) byte write and
extended (-40



C to 125



C) temperature operation.
It is recommended that all other applications use
Microchip’s 24LC04B.

- Commercial (C): 0˚C to +70˚C
- Industrial (I): -40˚C to +85˚C
- Automotive (E): -40˚C to +125˚C

PACKAGE TYPES
BLOCK DIAGRAM
24C04A
24C04A
A0
A1
A2
VSS
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
A2
VSS
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
DIP
8-lead
SOIC
14-lead
SOIC
24C04A
SDA
NC
Vcc
WP
NC
SCL
NC
Vss
NC
A0
A1
NC
A2
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
Vss
SDA
SCL
Data
Buffer
(FIFO)
Data Reg.
VPP R/W Amp
Memory
Array
A
d
d
r
e
s
s
P
o
i
n
t
e
r
A0 to
A7
Increment
A8
Slave Addr.
Control
Logic
A0 A1 A2 WP

4K 5.0V I

2

C

™

Serial EEPROM

I

2

C is a trademark of Philips Corporation.