General Description

The AT24C128/256 provides 131,072/262,144 bits of serial electrically erasable andprogrammable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. 

Key applications

• Hotel Manage

• Membership

• E-ticket 

Customizations

• Printing: off-set print, silk-screen print, digital print 

• Code printing: thermal print, inkjet spray print, DOD UV print, embossing print, laser print, etc.

• Magnetic stripe: LoCo 300 Oe, HiCo 2750 Oe or 4000 Oe

• Special crafts: Hot-stamping, Hole punching, Signature panel, Scratching off, Hologram, Crystal epoxy surface, metal ring, etc.

• Coding: Encoding, Encryption,  etc.

Chip Features

• Low-voltage and Standard-voltage Operation

– 2.7 (VCC

 = 2.7V to 5.5V)

• Internally Organized 16,384 x 8 and 32,768 x 8

• Two-wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 400 kHz Compatibility

• Write Protect Pin for Hardware and Software Data Protection

• 64-byte Page Write Mode (Partial Page Writes Allowed)

• Self-timed Write Cycle (5 ms Max)

• High Reliability

– Data Retention: 40 Years

• Lead-free/Halogen-free Devices Available

• 8-lead JEDEC SOIC and 8-lead TSSOP

Chip Parameters

Card Parameters