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DESCRIPTION

The Microchip Technology Inc. 28C16A is a CMOS 16K non-volatile electrically Erasable PROM. The 28C16A is accessed like a static RAM for the read or write cycles without the need of external components. Dur ing 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. To determine when a write cycle is complete, the 28C16A uses Data polling. Data polling allows the user to read the location last written to when the write operation is complete. CMOS design and processing enables this part to be used in systems where reduced power consumption and reliability are required. A complete family of packages is offered to provide the utmost flexibility in applications.

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

? 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

? 24-pin Dual-In-Line Package

? 32-pin PLCC Package

? Available for Extended Temperature Ranges:

- Commercial: 0°C to +70°C

- Industrial: -40°C to +85°C