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
Standard Value
Module Dimension
93.0 x 70.0
Viewing Area
72.0 x 40.0
Dot Size
0.48 x 0.48
Dot Pitch
0.52 x 0.52
Pin Assignment
Pin
Symbol
1
2
3
4
5
6
7~14
15
16
17
18
Vss
Vdd
Vo
RS
R/W
E
DB0~7
A
K
/RST
Vee
Unit
mm
mm
mm
mm
Electronic Characteristics
Function
GND
+ 5V(+3V option)
Contrast adjustment
Register selection signal
Data read/write
H -> L Enable signal
Data bus line
Power supply for B/L (+)
Power supply for B/L (GND)
Reset LCD module
Negative voltage output +7.5V
Symbol Condition
Typical
Unit
Value
Input Voltage
Vdd Vdd = +5V 5.0
V
Supply Current
Idd
Vdd = +5V 9.7 mA
LCD Driving
6.0
Vdd-Vo
V
25
o
C
Voltage
LED Forward
4.2
Vf
V
25
o
C
Voltage
LED Forward
If
330 mA
25
o
C
Current
EL Power
Vel
Vel=110Vac/400Hz
V
Voltage
Item
Dimension
7.0
10.5
13.24
9.9
15.0
18.38
2.5
93.0
±
0.5
80.0
72.0(VA)
66.52(AA)
1.5
9.7(EL or No B/L)
13.6(LED B/L)
9.0(LED B/L)
5.1(EL or No B/L)
70.0
±
0.5
50.2
40.0(VA)
33.24(AA)
14.0
65.0
K
5.08
0.52
0.48
DOT SIZE
SCALE 10/1
1.6
A
4-Ø1.0 PTH
18
18-Ø1.0 PTH
1.8
P2.54*17=43.18
88.0
1
4-Ø2.5 PTH
4-Ø6.5 PAD
2.5
2.5
19.08
32.46
28.0
0.52
0.48
BOLYMIN [ BOLYMIN, INC ]
