Module 
COLOR TYPE - B/W
20 x 4 DOTS Model : KDC204A01BXOAA
DIMENSIONAL DRAWING DOWNLOAD    form in PDF format
FEATURES: INTEL 8051 INRERFACE
  1. Display Mode: TRANSMISSIVE,POSITIVE
                         STN(Y-G)LCD
  2. Display Format: 20*4 characters
  3. Input Data: Parallal data input from MPU
  4. Multiplexing Ratio: 1/16 Duty
  5. Bias: 1/4 Bias
  6. Viewing Direction: 6 o'clock
  7. Vop: 3.95
  8. 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