Maxim Integrated DS1245AB
The DS1245AB provides full functional capability for VCC greater than 4.75 volts and write protects by 4.5 volts. The DS1245Y provides full functional capability for VCC greater than 4.5 volts and writeprotects by 4.25 volts. The nonvolatile static RAMs constantly monitor VCC.FEATURES
● 10 years minimum data retention in the absence of external power● Data is automatically protected during power loss
● Replaces 128k x 8 volatile static RAM, EEPROM or Flash memory
● Unlimited write cycles
● Low-power CMOS
● Read and write access times of 70 ns
● Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
● Full ±10% VCC operating range (DS1245Y)
● Optional ±5% VCC operating range (DS1245AB)
● Optional industrial temperature range of -40°C to +85°C, designated IND
● JEDEC standard 32-pin DIP package
● PowerCap Module (PCM) package - Directly surface-mountable module - Replaceable snap-on PowerCap provides lithium backup battery - Standardized pinout for all nonvolatile SRAM products - Detachment feature on PowerCap allows easy removal using a regular screwdriver DS1245Y/AB 1024k Nonvolatile SRAM PIN ASSIGNMENT NC A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32...