1
Features
• Low Voltage and Standard Voltage Operation
– 2.7 (V
CC
= 2.7V to 5.5V)
– 1.8 (V
CC
= 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
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
• Automotive Grade, Extended Temperature and Lead-free/Halogen-free
Devices Available
• 8-lead PDIP and 8-lead JEDEC SOIC 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-lead PDIP and 8-lead JEDEC SOIC packages and is accessed via a 2-wire
serial interface. In addition, this device is available in 2.7V (2.7V to 5.5V) and 1.8V
(1.8V to 5.5V) versions.
2-Wire Serial
EEPROM
16K (2048 x 8)
AT24C164
Rev. 0105H–SEEPR–1/04
Pin Configurations
Pin Name Function
A0 - A2 Address Inputs
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
8-lead PDIP
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
8-lead SOIC
1
2
3
4
8
7
6
5
A0
A1
A2
GND
VCC
WP
SCL
SDA
