AX24C128A/256A-128K/256K-bit 2-WIRE SERIAL CMOS EEPROM DataSheet

General Description
    The AX24C128A/AX24C256A provides 131,072/262,144 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as16,384/32,768 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AX24C128A/AX24C256A is available in spacesaving SOP-8 and TSSOP-8 packages and is accessed via a two-wire serial interface. In addition, the AX24C128A/AX24C256A is available in 1.8V (1.8V to 5.5V) version.

Features
 Wide Voltage Operation
- VCC = 1.8V to 5.5V
 Operating Ambient Temperature:
-40°C to +85°C
 Internally Organized:
- AX24C128A, 16,384 X 8 (128K bits)
- AX24C256A, 32,768 X 8 (256K bits)
 Two-wire Serial Interface
 Schmitt Trigger, Filtered Inputs for Noise Suppression
 Bidirectional Data Transfer Protocol
 1MHz (5V), 400 KHz (1.8V, 2.5V, 2.7V) Compatibility
 Write Protect Pin for Hardware Data Protection
 64-byte Page (128K, 256K) Write Modes
 Partial Page Writes Allowed
 Self-timed Write Cycle (5 ms max)
 High-reliability
- Endurance: 1 Million Write Cycles
- Data Retention: 100 Years
 SOP-8 and TSSOP-8 packages