详细说明：

AT24C32  
Features
Low-Voltage and Standard-Voltage Operation
– 5.0 (VCC = 4.5V to 5.5V)
– 2.7 (VCC = 2.7V to 5.5V)
– 2.5 (VCC = 2.5V to 5.5V)
 

 
– 1.8 (VCC = 1.8V to 5.5V)
Low-Power Devices (ISB = 2??A @ 5.5V) Available
Internally Organized 4096 x 8, 8192 x 8
2-Wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
 

Bidirectional Data Transfer Protocol
100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
Write Protect Pin for Hardware Data Protection
32-Byte Page Write Mode (Partial Page Writes Allowed)
Self-Timed Write Cycle (10 ms max)
High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
– ESD Protection: >3,000V
Automotive Grade and Extended Temperature Devices Available
8-Pin JEDEC PDIP, 8-Pin and 14-Pin JEDEC SOIC, 8-Pin EIAJ SOIC,
and 8-pin TSSOP Packages
 
2-Wire
Serial EEPROM

32K (4096 x 8)

64K (8192 x 8)

AT24C32
 

Description
The AT24C32/64 provides 32,768/65,536 bits of serial electrically

erasable and pro-
grammable read only memory (EEPROM) organized as 4096/8192 words of 8

bits
each. The device’s cascadable feature allows up to 8 devices to share

a common 2-
wire bus. The device is optimized for use in many industrial and

commercial applica-
tions where low power and low voltage operation are essential. The

AT24C32/64 is
available in space saving 8-pin JEDEC PDIP, 8-pin and 14-pin JEDEC

SOIC, 8-pin
EIAJ SOIC, and 8-pin TSSOP packages and is accessed via a 2-wire serial

interface.
In addition, the entire family is available in 5.0V (4.5V to 5.5V),

2.7V (2.7V to 5.5V),
2.5V (2.5V to 5.5V) and 1.8V (1.8V to 5.5V) versions.