DS1230AB

19-5635; Rev 11/10 www.maxim-ic.com DS1230Y/AB 256k Nonvolatile SRAM FEATURES  10 years minimum data retention in the absence of external power  Data is automatically protected during power loss  Replaces 32k 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 (DS1230Y)  Optional ±5% VCC operating range (DS1230AB)  Optional industrial temperature range of -40°C to +85°C, designated IND  JEDEC standard 28-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 PIN ASSIGNMENT A14 A12 A7 A6 A5 A4 A3 A2 A1 A...