Rainbow Electronics BG12864B User Manual

BO LYMIN

BG12864B

Feature

1. COB with metal frame

2. Built-in controller ST7920
(128x64 dots matrix mode or 16x16 dots Big5/GB
Chinese mode , or 8x16 dots ASCII mode)

3. +5V single power supply

4. 1/32 duty cycle

5. Option: +3V single power supply

6. Option: LED array/edge B/L, EL B/L

Mechanical Data
Item

Module Dimension

Viewing Area
Dot Size

Dot Pitch

Standard Value Unit

93.0 x 70.0

72.0 x 40.0

0.48 x 0.48

0.52 x 0.52

mm
mm
mm
mm

Pin Assignment

Pin Symbol Function

1
2
3
4
5
6

7~14

15
16 Power supply for B/L (GND)
17
18

Vss
Vdd
Vo
RS
R/W
E
DB0~7
A
K
/RST
Vee

Dimension

9.9

GND
+ 5V(+3V option)
Contrast adjustment

Register selection signal
Data read/write
H->L Enablesignal
Data bus line
Power supply for B/L (+)

Reset LCD module

Negative voltage output +7.5V

93.0 ± 0.5

10.5

13.24

15.0

7.0

18.38

72.0(VA)

66.52(AA)

80.0

Electronic Characteristics

Item Symbol Condition

Input Voltage
Supply Current
LCD Driving
Voltage
LED F orward
Voltage

LED F orward
Current

EL Power

Voltage

1.5

2.565.0

28.014.0

32.46

Vdd

Idd

Vdd-Vo

Vf

If

Vel

9.7(EL or No B/L)

13.6(LED B/L)

5.1(EL or No B/L)

Vdd = +5V
Vdd = +5V

Vel=110Vac/400Hz

9.0(LED B/L)

o

25 C

o

25 C

o

25 C

Typical

0.52

0.48

Value

5.0

9.7

6.0

4.2

330

Unit

V

mA

V

V

mA

V

70.0 ± 0.5

50.2

40.0(VA)

33.24(AA)

2.5

18-Ø1.0 PTH

18

19.08 P2.54*17=43.18

1.8

88.0

A

K

5.08

4-Ø1.0 PTH

1

1.6

2.5

4-Ø2.5PTH
4-Ø6.5 PAD

0.52

0.48

DOT SIZE
SCALE 10/1