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)
• Internally Organized 2048 x 8 (16K)
• 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
• Cascadable Feature Allows for Extended Densities
• 16-Byte Page Write Mode
• Partial Page Writes Are Allowed
• Self-Timed Write Cycle (10 ms max)
• High Reliability
2-Wire Serial
EEPROM
16K (2048 x 8)
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
AT24C164
– ESD Protection: >3,000V
• Automotive Grade and Extended Temperature Devices Available
• 8-Pin JEDEC SOIC and 8-Pin PDIP Packages
Description
The AT24C164 provides 16,384 bits of serial electrically erasable and programmable
read only memory (EEPROM) organized as 2048 words of 8 bits each. The device’s
cascadable feature allows up to eight devices to share a common 2-wire bus. The
device is optimized for use in many industrial and commercial applications where low
power and low voltage operation are essential. The AT24C164 is available in space
saving 8-pin PDIP and 8-pin SOIC packages and is accessed via a 2-wire serial inter-
face. In addition, this device 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.
Pin Configurations
Pin Name
A0 to A2
SDA
Function
2-Wire, 16K
Serial EEPROM
Address Inputs
Serial Data
SCL
Serial Clock Input
Write Protect
WP
8-Pin PDIP
8-Pin SOIC
A0
1
2
3
4
8
7
6
5
VCC
WP
A0
A1
1
8
7
6
5
VCC
WP
A1
A2
2
3
4
SCL
SDA
A2
SCL
SDA
GND
GND
Rev. 0105D–07/98
1