20x4 Character LCD Display, 20x4 LCD Module, LCD Display Module 20x4 - RC2004B
  • General Specs
  • Interface Pin Function
  • Contour Drawing
  • Electrical Characteristics
  • Display Character Address Code
Item Dimension Unit
Dot Matrix (Resolution) 5×8 dots includes cursor dots
Characters × Lines 20 Characters × 4 Lines
Module Dimension 77.0 × 47.0 × 12.4 (MAX) mm
View Area 60.0 × 22.0 mm
Active Area 55.1 × 17.56 mm
Mounting Hole 70.0 × 40.0 mm
Dot Size 0.46 × 0.42 mm
Dot Pitch 0.51 × 0.47 mm
Character Size 4.03 × 2.30 mm
Character Pitch 4.51 × 2.78 mm
View Direction 6 o’clock
Built-in Controller ST7066 or Equivalent
Interface 6800, option SPI / I2C (RW1063 IC)
Power Supply 5V (Also available for 3V)
Negative voltage optional for 3V power supply
Duty 1/16 duty cycle
Type Character LCD Display
Feature LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
Pin No. Symbol Description
1 VSS Ground
2 VDD Power supply for logic
3 VO Contrast Adjustment
4 RS   Data/ Instruction  select signal 
5 R/W   Read/Write select signal
6 E   Enable signal
7 DB0   Data bus line
8 DB1   Data bus line
9 DB2   Data bus line
10 DB3   Data bus line
11 DB4   Data bus line
12 DB5   Data bus line
13 DB6   Data bus line
14 DB7   Data bus line
15 A   Power supply for B/L +
16 K   Power supply for B/L -

20x4 Character LCD Display, 20x4 LCD Module, LCD Display Module 20x4 - RC2004B

Item Symbol Standard Value
typ.
Unit
Input Voltage VDD 3/5 V
Recommended LCD Driving Voltage for Normal Temp.
Version module @25ºC
VDD-VO 4.50 V
Display position 1 2 3 4 5 6 7 8 9 10 11 12 13 --- --- 20
DD RAM Address 00 01                           13
DD RAM Address 40 41                           53
DD RAM Address 14 15                           27
DD RAM Address 54 55                           67
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