LC7981

The LC7981 is a controller LSI for the liquid crystal dot maxtrix graphic display.It stores display data sent from the 8-bit microcomputer in the display RAM attached externally and generates dot maxtrix LC drive signals.

The absolute maximum ratings of the LC7981 can be summarized as:(1):the parameter is maximum supply voltage,the symbol is VDDmax,the rating is -0.3 to +7.0,the unit is V;(2):the parameter is input voltage,the symbol is VIN,the rating is -0.3 to VDD+0.3,the unit is V;(3):the parameter is output voltage,the symbol is VOUT,the rating is -0.3 to VDD+0.3,the unit is V;(4):the parameter is allowable power demand,the symbol is Pdmax,the rating is 200,the unit is mW;(5):the parameter is operating temperature,the symbol is Topr,the rating is -20 to +75,the unit is ;(6):the parameter is storage temperature,the symbol is Tstg,the rating is -55 to +125,the unit is .

The electrical characteristics of the LC7981 can be summarized as:(1):the parameter is input leak current,the symbol is IIN,the min is -5,the max is 5,the unit is A;(2):the parameter is current dissipation,the symbol is ICC1,the typ is 2,the max is 4,the unit is mA;(3):the parameter is current dissipation,the symbol is ICC2,the typ is 3,the max is 5,the unit is mA;(4):the parameter is pull-up current,the symbol is IPL,the min is 10,the max is 20,the unit is A.