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