Display Controller (Upd16312Gb-3B4) - Casio CE-300 Service Manual

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4-3. Display controller (uPD16312GB-3B4)

Pin No. Signal
1 SW1
2 SW2
3 SW3
4 SW4
5 DOUT
6 DIN
7 VSS
8 CLK
9 STB
10 KEY1
11 KEY2
12 KEY3
13 KEY4
14 VDD
15 SEG1
16 SEG2
17 SEG3
18 SEG4
19 SEG5
20 SEG6
21 SEG7
22 SEG8
23 SEG9
24 SEG10
25 SEG11
26 SEG12
27 VEE
28 GRD10
29 GRD9
30 GRD8
31 GRD7
32 GRD6
33 GRD5
34 GRD4
35 GRD3
36 GRD2
37 GRD1
38 VDD
39 LED4
40 LED3
41 LED2
42 LED1
43 VSS
44 OSC
Description
Not used (GND)
Not used (GND)
Not used (GND)
Not used (GND)
Data out signal to CPU
Data in signal from CPU
GND
Clock signal (CLK)
Data strobe signal (STB)
Not used
Not used
Drawer sensor signal (DRW.S)
VCC
VCC
Display segment signal (Sa)
Display segment signal (Sb)
Display segment signal (Sc)
Display segment signal (Sd)
Display segment signal (Se)
Display segment signal (Sf)
Display segment signal (Sg)
Display segment signal (Sdp)
Display segment signal (Str)
Display segment common signal (Scom)
Not used
Not used
Power for display (-VN)
Display digit signal (G10)
Display digit signal (G9)
Display digit signal (G8)
Display digit signal (G7)
Display digit signal (G6)
Display digit signal (G5)
Display digit signal (G4)
Display digit signal (G3)
Display digit signal (G2)
Display digit signal (G1)
VCC
Not used
Not used
Not used
Not used
GND
System clock (500 KHz)
Digitized in Heiloo, Holland.
I n / O u t
—
—
—
—
Out
In
—
In
In
—
—
In
—
—
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
—
Out
Out
Out
Out
Out
Out
Out
Out
Out
Out
—
—
—
—
—
—
In
— 7 —
Status of Status of
Power On Power OFF
GND GND
GND GND
GND GND
GND GND
High High
Pulse High
GND GND
Pulse High
Pulse High
— —
— —
High High
5 V 5 V
5 V 5 V
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Low Low
Low Low
-32 V -32 V
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
Pulse Low
5 V 5 V
Pulse Low
Pulse Low
Pulse Low
Pulse Low
GND GND
Pulse Pulse
3/22/15