BC4004A is 40x4 characters LCD Module (LCM) made using Chip on Board (COB) method and comes with metal frame.

Module dimension of BC4004A is (190.0x54.0) mm and viewing area is (147.0x29.5) mm.

It has built-in controller ST7066 (or equivalent) that provides different language options, English, Japanese, Chinese, Western & Eastern European, Russian etc.

It is available without backlight or with LED, EL backlight options.

BC4004A LCD module is available in gray, yellow/green and blue LCD color.

Item	Dimension	Unit
Module dimension	190.0 × 54.0	mm
View Area(AA)	147.0 × 29.5	mm
Dot size	0.5 × 0.55	mm
Character Size	2.78 x 4.89	mm

 

電氣特性  (Ta=25±2°C)

Item	Symbol	Condition	Typical Value	Unit
Input Voltage	Vdd	Vdd = +5V	5.0	V
Supply Current	Idd	Vdd = +5V	1.6	mA
LCD Driving Voltage	Vdd-Vo	25°C	4.5	V
LED Forward Voltage (yellow-green)	Vf	25°C	4.2	V
LED Forward Current	If	25°C	600	mA
EV Power Voltage	Vel	Vel=110Vac/400Hz		V

Pin	Symbol	Function
1~8	DB7~0	Data bus line
9	E1	H --> L enable signal ic1
10	R/W	H/L read/write
11	RS	register select
12	Vo	Contrast adjustment
13	Vss	GND
14	Vdd	+5V (+3V option)
15	E2	H --> L enable signal ic2
16	NC/Vee	NC/Negative voltage output
17	A	Power Supply for B/L(+)
18	K	Power supply for B/L (GND)