40x2 LCD Display

  • produsts-pic
VC4021

1.5x8 dots with cursor
2.Built-in controller KS0066 or equivalent
3.+ 5V single power supply (option: +3V)
4.1/16 duty cycle
5.LED B/L pins: A/K, or 1/2, 15/16
6.Backlight: LED B/L
7.Option: Negative Voltage

ItemStandard ValueUnit
Module Dimension 182.0 x 33.5 mm
Viewing Area 154.4 x 16.5 mm
Active Area 147.5 x 11.5 mm
Dot Size 0.6 x 0.65 mm
Character Size 3.2 x 5.55 mm
ItemSymbolConditionTypical ValueUnit
Input Voltage VDD 25 ℃ 5.0 V
Supply Current IDD VDD = +5V 1.5 mA
LCD Driving Voltage VDD - VO 25 ℃ 4.5 V
LED Forward Voltage Vf 25 ℃ 4.2 V
LED Forward Current If 25 ℃ 280 mA
PinSymbolFunction
1 VSS GND
2 VDD +5V(+3V option)
3 VO Contrast Adjustment
4 RS H:Data L:Instruction
5 R/W H/L read/write signal
6 E H→L enable signal
7~14 DB0~DB7 H/L data bus line
15 A Power supply for B/L (+)
16 K Power supply for B/L (-)
1 2 3 4 5 6 7 8 9 10 11 12 39 40
00 01 02 03 04 05 06 07 08 09 0A 0B     26 27
40 41 42 43 44 45 46 47 48 49 4A 4B     66 67

VC4021