DESCRIPTION

The Microchip Technology Inc. 28C17A is a CMOS 16K nonvolatile electrically Erasable PROM. The 28C17A is accessed like a static RAM for the read or write cycles without the need of external components. During a “byte write”, the address and data are latched internally, freeing the microprocessor address and data bus for other operations. Following the initiation of write cycle, the device will go to a busy state and automatically clear and write the latched data using an internal control timer.

FEATURES

• Fast Read Access Time—150 ns

• CMOS Technology for Low Power Dissipation

   - 30 mA Active

   - 100 µA Standby

• Fast Byte Write Time—200 µs or 1 ms

• Data Retention >200 years

• High Endurance - Minimum 104 Erase/Write Cycles

• Automatic Write Operation

   - Internal Control Timer

   - Auto-Clear Before Write Operation

   - On-Chip Address and Data Latches

• Data Polling; Ready/Busy

• Chip Clear Operation

• Enhanced Data Protection

   - VCC Detector

   - Pulse Filter

   - Write Inhibit

• Electronic Signature for Device Identification

• 5-Volt-Only Operation

• Organized 2Kx8 JEDEC Standard Pinout

   - 28 Pin Dual-In-Line Package

   - 32-Pin PLCC Package

   - 28-Pin Thin Small Outline Package (TSOP) 8x20mm

   - 28-Pin Very Small Outline Package (VSOP) 8x13.4mm

• Available for Extended Temperature Ranges:

   - Commercial: 0˚C to +70˚C

     Industrial: -40˚C to +85˚C