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IC2, VFD CONTROLLER/DRIVER
Pin Description:
Pin Number
Name
1
OSC2
44
OSC1
2
REMOTE
3
KEYIN
4
SW3
5
DO
6
D1
7, 43
Vss
8
CLK
9
CS
10~13
K0~K3
14, 38
VDD
15~20
S0/K0~S5/K5
21~25
S6~S10
26, 28~31
S11/G10~S15/G6
27
Vee
37~32
G0~G5
39
LED3
40
OREMOTE
41~42
PSW1~PSW2
Pin Configuration:
I/O
O
Crystal Oscillator output pin.
I
Crystal Oscillator input pin, provides oscillation frequency for IC.
I
Remote control signal receiver pin.
I
External key-in signal receiver pin.
I
Multi-purpose input pin.
Serial data output pin. When the shift clock falling edge, the serial data outputting from the low order
O
bit. This is an NMOS open-drain output pin.
I
Serial data input pin. When the shift clock rising edge, the serial data inputting from the low order bit.
-
Power supply ground.
I
Clock signal. To read data at the rising edge, and outputs data at the falling edge.
Initializes serial interface at the rising or falling edge, to set the VDTR6312 to waiting for receive com-
mand. After the CS fallen, the input data process become a command. After command processed,
I
terminate the current process, and initialized the serial interface. If CS is high voltage, CLK signal will
be in vain.
I
Keying data input pins.
-
Positive power supply.
O
Composite output pins of segment output signal and key scanning signal.
O
Segment output pins, PMOS open-drain with pull-low resistor output.
Segment or Grid driver output pins. These pins are selectable for segment or grid driving, and PMOS
O
open-drain with pull-low resistor output.
-
VFD power supply pin.
O
Grid driver output pins, PMOS open-drain with pull-low resistor output.
O
LED CMOS driver output pins, and maximum output current up to 20mA.
O
Remote control signal output pin.
O
External device power control pins.
1
OSC2 *
2
REMOTE *
3
KEYIN *
4
SW3
5
DO
6
DI
7
VSS
8
CLK
9
CS
10
K0
11
K1
Definitions
S17/G6
S14/G7
S13/G8
S12/G9
Vee
S11/G10
S10
73
33
G4
32
G5
31
30
29
28
27
26
25
24
S9
23
S8
DV-SL800W
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