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DVD-S30
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IC1 : µPD16312GB-3B4 (OPERATION P.C.B.)
No.
Name
1
2
Switch input
3
4
5
Data output
6
Data input
7
Logic ground
8
Clock input
9
Strobe
10
11
Key data input
12
13
14
Logic power
15
16
17
High-voltage output
18
19
20
21
TE
L 13942296513
22
23
High-voltage output
(segment)
24
25
26
High-voltage output
(segment/grid)
27
Pull-down level
28
29
High-voltage output
(segment/grid)
30
31
32
33
34
High-voltage output (grid)
35
36
37
www
38
Logic power
39
40
LED output
41
.
42
43
Logic ground
44
Oscillator pin
26
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Symbol
SW1
SW2
These pins constitute a 4-bit general-purpose input port.
SW3
SW4
DOUT
Output serial data at the falling edge of the shift clock, starting from low
order bit. This is N-ch open-drain output pin.
DIN
Input serial data at rising edge of shift clock, starting from the low order bit.
VSS
Connect this pin to system GND.
CLK
Reads serial data at the rising edge, and outputs data at the falling edge.
STB
Initializes serial interface at the rising or falling edge of the uPD16312. It
then waits for reception of a command. Data input after STB has fallen is
processed as a command. While command data is processed, current
processing is stopped, and the serial interface is initialized. While STB is
high, CLK is ignored.
KEY1
KEY2
Data input to these pins is latched at the end of the display cycle.
KEY3
KEY4
5 V ± 10 %
VDD
Seg1/KS1
Seg2/KS2
Seg3/KS3
Segment output pins (Dual function as key source)
Seg4/KS4
Seg5/KS5
Seg6/KS6
Seg7
Seg8
Seg9
Segment output pins
Seg10
Seg11
Seg12/Grid11
These pins are selectable for segment or grid driving.
VEE
VDD - 35 V max.
Seg13/Grid10
Seg14/Grid9
These pins are selectable for segment or grid driving.
Seg15/Grid8
Seg16/Grid7
Grid6
Grid5
Grid4
Grid output pins
Grid3
Grid2
Grid1
5 V ± 10 %
VDD
LED4
x
ao
u163
y
LED3
CMOS output. +20 mA max.
LED2
i
LED1
VSS
Connect this pin to system GND.
OSC
Connect resistor to this pin to determine the oscillation frequency to this pin.
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2 9
8
Description
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
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