COLOR TYPE :: TFT  COLOR TYPE :: B/W  CHARACTER TYPE :: WITH LED BACKLIGHT  CHARACTER TYPE :: NO BACKLIGHT  GRAPHIC TYPE :: WITH LED BACKLIGHT  GRAPHIC TYPE :: NO BACKLIGHT  Module  COLOR TYPE - B/W 20 x 4 DOTS Model : KDC204A01BXOAA DIMENSIONAL DRAWING DOWNLOAD    form in PDF format FEATURES: INTEL 8051 INRERFACE Display Mode: TRANSMISSIVE,POSITIVE                      STN(Y-G)LCD Display Format: 20*4 characters Input Data: Parallal data input from MPU Multiplexing Ratio: 1/16 Duty Bias: 1/4 Bias Viewing Direction: 6 o'clock Vop: 3.95 Driver IC: ST7066+ST7063*2 ELECTRO-OPTICAL CHARACTERISTICS ITEM SYMBOL CONDITIONS TEMP MIN TYPE MAX NOTE UNITS LCD driving voltage VLCD ==0 0C - - - NOTE1 V 25C - 3.95 -   V 50C - - -   V Response Time Rise Time(Tr) ==0 0C - - - NOTE4 msec Decay Time(Td) - - - Rise Time(Tr) 25C - 200 300 Decay Time(Td) - 200 300 Rise Time(Tr) 50C - - - Decay Time(Td) - - - Contrast Ratio Cr ==0 25C - 7 - NOTE3 --- PIN Description INTERFACE. Symbol Description INTERFACE. Symbol Description 1 VSS GND 11 DB4 Data bus line bit 4 2 VDD Power supply 12 DB5 Data bus line bit 5 3 Vadj Contrast adjust input 13 DB6 Data bus line bit 6 4 RS H:Instruction L:Data 14 DB7 Data bus line bit 7 5 R/W H:Data read L:Data write 15 VSS GND 6 E Enable 16 NC No chip select 7 DB0 Data bus line bit 0 17 NC No chip select 8 DB1 Data bus line bit 1 18 FGND Bezel Ground 9 DB2 Data bus line bit 2 19 LEDA +Supply for led backlight 10 DB3 Data bus line bit 3 20 LEDK -Supply for led backlight