M
FEATURES
93C56A/B
PACKAGE TYPE
PDIP
CS
CLK
DI
DO
1
2
3
4
V
CC
8
7
6
5
NC
NC
V
SS
2K 5.0V Automotive Temperature Microwire
®
Serial EEPROM
• Single supply 5.0V operation
• Low power CMOS technology
- 1 mA active current (typical)
- 1
µ
A standby current (maximum)
• 256 x 8 bit organization (93C56A)
• 128 x 16 bit organization (93C56B)
• Self-timed ERASE and WRITE cycles (including
auto-erase)
• Automatic ERAL before WRAL
• Power on/off data protection circuitry
• Industry standard 3-wire serial interface
• Device status signal during ERASE/WRITE
cycles
• Sequential READ function
• 100,000 E/W cycles guaranteed
• Data retention > 200 years
• 8-pin PDIP and SOIC packages
• Available for the following temperature ranges:
- Automotive (E):
-40
°
C to +125
°
C
93C56A/B
SOIC
CS
CLK
DI
DO
1
8
V
CC
NC
NC
V
SS
93C56A/B
2
3
4
7
6
5
BLOCK DIAGRAM
MEMORY
ARRAY
ADDRESS
DECODER
DESCRIPTION
The Microchip Technology Inc. 93C56A/B is a 2K-bit,
low-voltage serial Electrically Erasable PROM. The
device memory is configured as 256 x 8 bits (93C56A)
or 128 x 16 bits (93C56B). Advanced CMOS technol-
ogy makes this device ideal for low-power, nonvolatile
memory applications. The 93C56A/B is available in
standard 8-pin DIP and surface mount SOIC packages.
This device is only recommeded for 5V automotive
temperature applications. For all commercial and
industrial applications, the 93LC56A/B is recom-
mended.
ADDRESS
COUNTER
DATA
REGISTER
DI
MEMORY
DECODE
LOGIC
CLOCK
GENERATOR
V
CC
V
SS
OUTPUT
BUFFER
DO
CS
CLK
Microwire is a registered trademark of National Semiconductor.
©
1998 Microchip Technology Inc.
Preliminary
DS21206B-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
