DS1217M1/2-25中文资料Dallas数据手册PDF规格书

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