24FC32 Datasheet, PDF (1/12 Pages) Microchip Technology – 32K 5.0V 1 MHz I 2 C Smart Serial EEPROM

24FC32
32K 5.0V 1 MHz I²C^™ Smart Serial^™ EEPROM
FEATURES
• Voltage operating range: 4.5V to 5.5V
- Maximum write current 3 mA at 5.5V
- Maximum read current 150 µA at 5.5V
- Standby current 1 µA typical
• 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):
0˚C to +70˚C
- Industrial (I):
-40˚C to +85˚C
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 I²C bus.
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.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
VSS 4
SOIC
A0 ¹
A1 ²
A2 ³
VSS ⁴
8 VCC
7 NC
6 SCL
5 SDA
8 _VCC
7 _NC
6 _SCL
5 _SDA
BLOCK DIAGRAM
A0..A2
HV GENERATOR
I/O
CONTROL
LOGIC
I/O
SCL
SDA
MEMORY
CONTROL
LOGIC
XDEC
VCC
VSS
EEPROM
ARRAY
PAGE LATCHES
CACHE
YDEC
SENSE AMP
R/W CONTROL
I²C is a trademark of Philips Corporation.
Smart Serial is a trademark of Microchip Technology Inc.
© 1996 Microchip Technology Inc.
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DS21126B-page 3-1