24C32A Datasheet, PDF (1/12 Pages) Microchip Technology – 32K 5.0V I 2 C O Serial EEPROM

24C32A
32K 5.0V I²C^™ Serial EEPROM
FEATURES
• Voltage operating range: 4.5V to 5.5V
- Maximum write current 3 mA at 5.5V
- Standby current 1 µA typical at 5.0V
• 2-wire serial interface bus, I²C™ compatible
• 100 kHz and 400 kHz compatibility
• Self-timed ERASE and WRITE cycles
• Power on/off data protection circuitry
• Hardware write protect
• 1,000,000 Erase/Write cycles guaranteed
• 32-byte page or byte write modes available
• Schmitt trigger filtered inputs for noise suppres-
sion
• Output slope control to eliminate ground bounce
• 2 ms typical write cycle time, byte or page
• Up to eight devices may be connected to the
same bus for up to 256K bits total memory
• Electrostatic discharge protection > 4000V
• Data retention > 200 years
• 8-pin PDIP and SOIC packages
• Temperature ranges
- Commercial (C):
0˚C to 70˚C
- Industrial (I):
-40˚C to +85˚C
- Automotive (E):
-40˚C to +125˚C
DESCRIPTION
The Microchip Technology Inc. 24C32A is a 4K x 8 (32K
bit) Serial Electrically Erasable PROM. It has been
developed for advanced, low power applications such
as personal communications or data acquisition. The
24C32A also has a page-write capability of up to 32
bytes of data. The 24C32A is capable of both random
and sequential reads up to the 32K boundary. Func-
tional address lines allow up to eight 24C32A devices
on the same bus, for up to 256K bits address space.
Advanced CMOS technology and broad voltage range
make this device ideal for low-power/low-voltage, non-
volatile code and data applications. The 24C32A is
available in the standard 8-pin plastic DIP and both 150
mil and 200 mil SOIC packaging.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
Vss 4
SOIC
A0
1
A1
2
A2
3
Vss
4
8 Vcc
7 WP
6 SCL
5 SDA
8
Vcc
7
WP
6
SCL
5
SDA
BLOCK DIAGRAM
A0..WA2P WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
I/O
SCL
SDA
VCC
VSS
XDEC
EEPROM
ARRAY
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
I²C is a trademark of Philips Corporation.
© 1996 Microchip Technology Inc.
Preliminary
This document was created with FrameMaker 4 0 4
DS21163B-page 1