1996 Microchip Technology Inc.
DS21126B-page 3-1
FEATURES
Voltage operating range: 4.5V to 5.5V
- Maximum write current 3 mA at 5.5V
- Maximum read current 150
- Standby current 1
1 MHz SE2.bus two wire protocol
Self-timed write cycle (including auto-erase)
Power on/off data protection circuitry
Endurance:
- 10,000,000 Erase/Write cycles guaranteed
for a 4K block
- 1,000,000 E/W cycles guaranteed for a 28K
block
8-byte page, or byte modes available
1 page x 8 line input cache (64 bytes) for fast write
loads
Schmitt trigger inputs for noise suppression
2 ms typical write cycle time, byte or page
Up to 8 chips 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/SOIC packages
Temperature ranges
- Commercial (C):
- Industrial (I):
μ
A at 5.5V
μ
A typical
DESCRIPTION
The Microchip Technology Inc. 24FC32 is a 4K x 8 (32K
bit) Serial Electrically Erasable PROM (EEPROM) with
a high-speed 1 MHz SE2.bus whose protocol is
functionally equivalent to the industry-standard I
This device has been developed for advanced, low
power applications such as personal communications
or data acquisition. The 24FC32 features an input
cache for fast write loads with a capacity of eight 8-byte
pages, or 64 bytes. It also features a fixed 4K-bit block
of ultra-high endurance memory for data that changes
frequently. The 24FC32 is capable of both random and
sequential reads up to the 32K boundary. Functional
address lines allow up to 8 - 24FC32 devices on the
same bus, for up to 256K bits address space. The
24FC32 is available in the standard 8-pin plastic DIP
and 8-pin surface mount SOIC package.
2
C bus.
0C to
-40C to
+70C
+85C
PACKAGE TYPES
BLOCK DIAGRAM
2
SOIC
1
2
3
4
8
7
6
5
V
CC
NC
SCL
SDA
A0
A1
A2
V
SS
2
PDIP
1
2
3
4
8
7
6
5
V
CC
NC
SCL
SDA
A0
A1
A2
V
SS
I/O
CONTROL
LOGIC
EEPROM
ARRAY
PAGE LATCHES
HV GENERATOR
SENSE AMP
R/W CONTROL
MEMORY
CONTROL
LOGIC
XDEC
YDEC
V
CC
V
SS
I/O
SCL
A0..A2
CACHE
SDA
24FC32
EEPROM
32K 5.0V 1 MHz I
2
C
Smart Serial
I
Smart Serial is a trademark of Microchip Technology Inc.
2
C is a trademark of Philips Corporation.
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