For Ardu LCD1602 character LCD expansion board , PCB processing technology, materials and full motherboard with a brand new high quality 2- line 16 -character LCD, not only has the contrast knob, backlight selector switch, also with four direction keys, select a key and a reset button; This 1602 LCD expansion board will simplify the circuit in the true sense of the direct plug this board For Arduino Duemilanove controller can .
module size: 20.5mm × 41mm
module Weight: 60g
1602 character LCD Profile
The 1602LCD main technical parameters:
1. Capacity: display
2. Chip working voltage: 4.5 - 5 . 5V
3. Operating current: 0mA (5 . 0V)
4. Modules operating voltage: 5 0V
5. Character size: 2 95 × 4 35 (W x H) mm
Pin Function Description:
1602LCD using standard 14 feet (no backlight) or 16 feet (with backlight) interface, pin interface description
1 The VSS power ground 9 D2 data
2 VDD positive power supply 10 D3 data
3 VL LCD bias
4 RS data / command select 12 D5 data
5 R / W read / write select 13 D6 data
6 E enable signal
7 D0 data the 15 BLA backlight source positive
8 D1 data the 16 BLK backlight negative
1 foot: VSS ground power.
2 feet: VDD connected to the the 5V positive supply.
3 feet: VL for the LCD display contrast adjustment terminal connected to the positive power supply contrast weakest ground when contrast
Highest contrast is too high will produce " ghosting " , used by a 10K potentiometer to adjust the contrast.
4 feet: RS register select, select the data register, high and low, select the instruction register.
5 Foot: R / W for read and write signal line, a high read operation, the low write operation. When RS
and R / W can be written instructions or display the address, when RS for the low-levelR / W
Busy signal can be read, when RS high R / W is low can be written.
6 feet: E -side to enable end, When E Duanyou high jump goes low, the LCD module execute command.
7 to 14 feet: D0 to D7 for 8 -bit bi-directional data line.
15 feet: backlight positive.
16 feet: backlight negative.