BOLYMIN BG12864B Cob with metal frame built-in controller st7920 Datasheet

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
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
Dimension
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 oC
Voltage
LED Forward
4.2
Vf
V
25 oC
Voltage
LED Forward
If
330 mA
25 oC
Current
EL Power
Vel Vel=110Vac/400Hz V
Voltage
Item
93.0 ± 0.5
80.0
72.0(VA)
66.52(AA)
7.0
10.5
13.24
1.5
2.5
Vss
Vdd
Vo
RS
R/W
E
DB0~7
A
K
/RST
Vee
9.7(EL or No B/L)
13.6(LED B/L)
9.0(LED B/L)
9.9
15.0
18.38
5.1(EL or No B/L)
0.52
0.48
32.46
28.0
14.0
65.0
5.08
K
0.52
0.48
70.0 ± 0.5
50.2
40.0(VA)
33.24(AA)
A
DOT SIZE
SCALE 10/1
4-Ø1.0 PTH
18
19.08
2.5
18-Ø1.0 PTH
1.8
P2.54*17=43.18
88.0
1
2.5
1
2
3
4
5
6
7~14
15
16
17
18
Unit
mm
mm
mm
mm
4-Ø2.5 PTH
4-Ø6.5 PAD
1.6
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