DESCRIPTION
The DS1217M is a nonvolatile RAM designed for portable applications requiring a rugged and durable package. The Nonvolatile Cartridge has memory capacities from 64K x 8 to 512K x 8. The cartridge is accessed in continuous 32K byte banks. Bank switching is accomplished under software control by pattern recognition from the address bus. A card edge connector is required for connection to a host system. A standard 30-pin connector can be used for direct mount to a printed circuit board.

FEATURES
• User-insertable
• Data retention greater than 5 years
• Capacity up to 512K x 8
• Standard bytewide pinout facilitates connection to JEDEC 28-pin DIP via ribbon cable
• Software-controlled banks maintain 32 x 8 JEDEC 28-pin compatibility
• Multiple cartridges can reside on a common bus
• Automatic write protection circuitry safeguards against data loss
• Manual switch unconditionally protects data
• Compact size and shape
• Rugged and durable
• Wide operating temperature range of 0°C to 70°C