STK12C68-W20I

The simtek STK12C68 is a fast static RAM with a nonvolatile,electrically erasable PROM element incorporated in each static memory cell.The STK12C68-W20I belongs to STK12C68 series.

Features of the STK12C68-W20I are:(1)20ns,25ns,35ns, and 45ns access times;(2)"hands-off" automatic store with external 68F capacitor on power down;(3)store to eeprom intitiated by AUTOStore on power down;(4)recall to sram initiated by software or power restor;(5)10mA typical Icc at 200ns cycle time;(6)unlimited read,write and recall cycles;(7)1,000,000 store cycles to eeprom;(8)100-year data retention in eerprom;(9)single 5V ±10% operation;(10)not sensitive to power on/off ramp rates;(11)no data loss from undershoot;(12)commercial and industrial temperatures;(13)24 pin 600 PDIP package.

The absolute maximum ratings of the STK12C68-W20I can be summarized as:(1):the parameter is voltage on input relative to Vss,the rating is -0.6 to Vcc+0.5,the unit is V;(2):the parameter is voltage on DQ0-7 or HSB,the rating is -0.5 to Vcc+0.5,the unit is V;(3):the parameter is temperature under bias,the rating is -55 to 125,the unit is ;(4):the parameter is storage temperature,the rating is -65 to 150,the unit is ; (5):the parameter is power dissipation,the rating is 1,the unit is W;(6):the parameter is DC output current(1 output at a time,1s duration),the rating is 15,the unit is mA.