UPD6450

The UPD6450 is on-screen character display CMOS LSI which is combined with microcomputers and used for VTR and video disks to display program reserved infomation,chapter numbers,etc.On monitor screens.NEC provides two standard types is UPD6450.Using same characters,UPD6450 is 18-pin DIP package.

Features of the UPD6450 are:(1)number of displayed character;(2)kinds of character;(3)character size;(4)dot matrix;(5)blinking ratio;(6)input/output of image signal;(7)background;(8)internal video signals;(9)mask pulse;(10)character signal output;(11):interface with microcomputer;(12):power supply;(13):structure.
 
The absolute maximum ratings of the UPD6450 can be summarized as:(1):the parameter is supply voltage,the symbol is VDD-VSS,the rating is 7,the unit is V;(2):the parameter is input voltage,the symbol is VIN,the rating is VDD+0.3>VIN>VSS-0.3,the unit is V;(3):the parameter is output voltage,the symbol is VOUT,the rating is VDD+0.3>VOUT>VSS-0.3,the unit is V;(4):the parameter is operating temperature,the symbol is Topt,the rating is -20 to +75,the unit is ;(5):the parameter is storage temperature,the symbol is Tstg,the rating is -40 to +125,the unit is ;(6):the parameter is output current,the symbol is ID,the rating is ±5,the unit is mA.