40x4 Character Display LCD, LCD Display 40x4 - RC4004A
  • 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 40 Characters × 4 Lines
Module Dimension 190.0 × 54.0 × 13.6 (MAX) mm
View Area 147.0 × 29.5 mm
Active Area 140.45 × 23.16 mm
Mounting Hole 183.0 × 47.0 mm
Dot Size 0.50 × 0.55 mm
Dot Pitch 0.57 × 0.62 mm
Character Size 2.78 × 4.89 mm
Character Pitch 3.53 × 6.09 mm
View Direction 6 o’clock
Built-in Controller ST7066 or Equivalent
Interface 6800
Power Supply 5V (Also available for 3V)
Negative voltage optional for 3V power supply
Duty 1/16 duty cycle
Type Character Display LCD
Feature LED can be driven by PIN1, PIN2, PIN17, PIN18 or A and K
Pin No. Symbol Description
1 DB7   Data bus line  
2 DB6   Data bus line  
3 DB5   Data bus line  
4 DB4   Data bus line  
5 DB3   Data bus line  
6 DB2   Data bus line  
7 DB1   Data bus line  
8 DB0   Data bus line  
9 E1  Enable signal 
10 R/W  Read/Write select signal 
11 RS  Data/ Instruction select signal 
12 VO Contrast Adjustment
13 VSS Ground
14 VDD Power supply for logic
15 E2  Enable signal 
16 NC  No connection 
17 A   Power supply for B/L +  
18 K   Power supply for B/L -  

40x4 Character Display LCD, LCD Display 40x4 - RC4004A

Item Symbol Standard Value
typ.
Unit
Input Voltage VDD 3/5 V
Recommended LCD Driving Voltage for Normal Temp.
Version module @25ºC
VDD-VO 4.35 V
Display position 1 2 3 4 5 6 7 8 9 10 11 12 --- --- --- 40  
DD RAM Address 00 01                           27 Line1
DD RAM Address 40 41                           67 Line2
DD RAM Address 0 1                           27 Line3
DD RAM Address 40 41                           67 Line4
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