24C32_04 Datasheet, PDF (1/14 Pages) Microchip Technology – 32K 5.0V I2C Smart Serial EEPROM

Obsolete Device
Please use 24LC32A or 24LC65.
24C32
32K 5.0V I²C^™ Smart Serial^™ EEPROM
FEATURES
• Voltage operating range: 4.5V to 5.5V
- Peak write current 3 mA at 5.5V
- Maximum read current 150 µA at 5.5V
- Standby current 1 µA typical
• Industry standard two-wire bus protocol, I²C
compatible
- Including 100 kHz and 400 kHz modes
• Self-timed write cycle (including auto-erase)
• Power on/off data protection circuitry
• Endurance:
- 10,000,000 Erase/Write cycles
guaranteed for High Endurance Block
- 1,000,000 E/W cycles guaranteed for
Standard Endurance Block
• 8 byte page, or byte modes available
• 1 page x 8 line input cache (64 bytes) for fast write
loads
• 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 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. 24C32 is a 4K x 8 (32K
bit) Serial Electrically Erasable PROM. This device has
been developed for advanced, low power applications
such as personal communications or data acquisition.
The 24C32 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 endur-
ance memory for data that changes frequently. The
24C32 is capable of both random and sequential reads
up to the 32K boundary. Functional address lines allow
up to eight 24C32 devices on the same bus, for up to
256K bits address space. Advanced CMOS technol-
ogy makes this device ideal for low-power non-volatile
code and data applications. The 24C32 is available in
the standard 8-pin plastic DIP and 8-pin surface mount
SOIC package
I²C is a trademark of Philips Corporation.
Smart Serial is a trademark of Microchip Technology Inc.
 2004 Microchip Technology Inc.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 NC
6 SCL
5 SDA
SOIC
A0 ¹
A1 ²
A2 ³
VSS
4
8
VCC
7 _NC
6 _SCL
5 _SDA
BLOCK DIAGRAM
A0 A1 A2
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
I/O
SCL
SDA
VCC
VSS
XDEC
EEPROM
ARRAY
PAGE LATCHES
CACHE
YDEC
SENSE AMP
R/W CONTROL
DS21061H-page 1