DS1217M_03 Datasheet, PDF (1/8 Pages) Dallas Semiconductor – Nonvolatile Read/Write Cartridge

DS1217M
Nonvolatile Read/Write Cartridge
www.maxim-ic.com
GENERAL 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. Alternatively,
remote mounting can be accomplished with a ribbon
cable terminated with a 28-pin DIP plug. The remote
method can be used to retrofit existing systems that
have JEDEC 28-pin bytewide memory sites.
ORDERING INFORMATION
PART
TEMP RANGE PIN-PACKAGE
DS1217M
0°C to +70°C
30 Cartridge
PIN CONFIGURATION
FEATURES
 User Insertable
 Data Retention Greater than 5 Years
 Capacity to 512k x 8
 Standard Bytewide Pinout Facilitates
Connection to JEDEC 28-Pin DIP Through
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
 Operating Temperature Range: 0°C to +70°C
TOP VIEW
Package Drawing appears at end of data sheet.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1 of 8
REV: 111803