DESCRIPTION

The Microchip Technology Inc. 24AA32 is a 4K x 8 (32K bit) Serial Electrically Erasable PROM capable of operation across a broad voltage range (1.8V to 6.0V). This device has been developed for advanced, low power applications such as personal communications or data acquisition. The 24AA32 features an input cache for fast write loads with a capacity of eight 8-byte pages, or 64 bytes. It also features a fixed 4K bit block of ultra-high endurance memory for data that changes frequently. The 24AA32 is capable of both random and sequential reads up to the 32K boundary. Functional address lines allow up to eight 24AA32 devices on the same bus, for up to 256K bits address space.

FEATURES

• Voltage operating range: 1.8V to 6.0V

   - Peak write current 3 mA at 6.0V

   - Maximum read current 150 µA at 6.0V

   - Standby current 1 µA typical

• Industry standard two-wire bus protocol, I2C compatible

   - Including 100 kHz (1.8V) and 400 kHz (5V) modes

• Self-timed ERASE and WRITE cycles

• Power on/off data protection circuitry

• Endurance:

   - 10,000,000 Erase/Write (E/W) cycles guaranteed for High Endurance Block

   - 1,000,000 E/W cycles guaranteed for Standard Endurance Block

• 8 byte page, or byte modes available

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

• Schmitt trigger, filtered inputs for noise suppression

• Output slope control to eliminate ground bounce

• 2 ms typical write cycle time, byte or page

• Factory programming (QTP) available

• Up to 8 devices may be connected to the same bus for up to 256K bits total memory

• Electrostatic discharge protection > 4000V

• Data retention > 200 years

• 8-pin PDIP/SOIC packages

• Temperature ranges

   - Commercial (C): 0°C to +70°C