EC24C128A/256A128K/256K-bit 2-WIRE SERIAL EEPROM

General description

The EC24C128A/EC24C256A 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 EC24C128A/EC24C256A is available in space-saving PDIP-8,SOP-8, MSOP-8 and TSSOP-8 packages and is accessed via a two-wire serial interface.


  • Wide Voltage Operation   – VCC= 1.7V to 5.5V
  • Operating Ambient Temperature: -40°C to +85°C
  • Internally Organized:
    – EC24C128A, 16,384 X 8 (128K bits)
    – EC24C256A, 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 (1.7V, 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
  • PDIP-8 ,SOP-8,MSOP-8 and TSSOP-8 packages


Pin Configurations

Ordering info