DESCRIPTION

The Microchip Technology Inc. 24FC65 is a “smart” 8K 8x 8 Serial Electrically Erasable PROM (EEPROM) with a high-speed 1MHz SE2.bus whose protocol is functionally equivalent to the industry-standard I2C bus.

This device has been developed for advanced applications such as personal communications, and provides the systems designer with flexibility through the use of many new user-programmable features. The 24FC65 offers a relocatable 4K-bit block of ultra-high-endurance memory for data that changes frequently. The remainder of the array, or 60K bits, is rated at 1,000,000 ERASE/WRITE (E/W) cycles guaranteed. The 24FC65 features an input cache for fast write loads with a capacity of eight pages, or 64 bytes. This device also features programmable security options for E/W protection of critical data and/or code of up to fifteen 4K blocks.

FEATURES

• Voltage operating range: 4.5V to 5.5V

- Maximum write current 3 mA at 5.5V

- Maximum read current 150 µA at 5.5V

- Standby current 1 µA typical

• 1 MHz SE2.bus two wire protocol

• Up to eight devices may be connected to the

same bus for up to 512K bits total memory

• Programmable block security options

• Programmable endurance options

• Schmitt trigger inputs for noise suppression

• Self-timed ERASE and WRITE cycles

• Power on/off data protection circuitry

• Endurance:

- 10,000,000 E/W cycles guaranteed for a 4K block

- 1,000,000 E/W cycles guaranteed for a 60K block

• Variable page size up to 64 bytes

• 8 byte x 8 line input cache (64 bytes) for fast write loads

• <3 ms typical write cycle time, byte or page

• Electrostatic discharge protection > 4000V

• Data retention > 200 years

• 8-pin PDIP/SOIC packages

• Temperature ranges

- Commercial (C): 0°C to +70°C

- Industrial (I): -40°C to +85°C