Description

The AT24C64B provides 65,536 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 8192 words of 8 bits each. The device’s cascadable feature allows up to 8 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 AT24C64B is available in space saving 8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2.7V (2.7 to 5.5V) and 1.8V (1.8 to 5.5V) versions.

Features

? Low-voltage and Standard-voltage Operation

– 2.7 (VCC = 2.7 to 5.5V)

– 1.8 (VCC = 1.8 to 5.5V)

? Low-power Devices (ISB = 6 μA at 5.5V) Available

? Internally Organized 8192 x 8

? 2-Wire Serial Interface

? Schmitt Trigger, Filtered Inputs for Noise Suppression

? Bi-directional Data Transfer Protocol

? 400 kHz Clock Rate

? Write Protect Pin for Hardware Data Protection

? 32-Byte Page Write Mode (Partial Page Writes Allowed)

? Self-Timed Write Cycle (5 ms max)

? High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

? Lead-free/Halogen-free Devices Available

? 8-lead PDIP, 8-lead JEDEC SOIC and 8-lead TSSOP Packages