Sharp DV-SL800W, Руководство по обслуживанию

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DV-SL800W
73
IC2, VFD CONTROLLER/DRIVER
Pin Description:
Pin Configuration:
Pin Number Name I/O Definitions
1 OSC2 O Crystal Oscillator output pin.
44 OSC1 I Crystal Oscillator input pin, provides oscillation frequency for IC.
2 REMOTE I Remote control signal receiver pin.
3 KEYIN I External key-in signal receiver pin.
4 SW3 I Multi-purpose input pin.
5 DO O
Serial data output pin. When the shift clock falling edge, the serial data outputting from the low order
bit. This is an NMOS open-drain output pin.
6 D1 I Serial data input pin. When the shift clock rising edge, the serial data inputting from the low order bit.
7, 43 Vss - Power supply ground.
8 CLK I Clock signal. To read data at the rising edge, and outputs data at the falling edge.
9 CS I
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,
terminate the current process, and initialized the serial interface. If CS is high voltage, CLK signal will
be in vain.
10~13 K0~K3 I Keying data input pins.
14, 38 VDD - Positive power supply.
15~20 S0/K0~S5/K5 O Composite output pins of segment output signal and key scanning signal.
21~25 S6~S10 O Segment output pins, PMOS open-drain with pull-low resistor output.
26, 28~31 S11/G10~S15/G6 O
Segment or Grid driver output pins. These pins are selectable for segment or grid driving, and PMOS
open-drain with pull-low resistor output.
27 Vee - VFD power supply pin.
37~32 G0~G5 O Grid driver output pins, PMOS open-drain with pull-low resistor output.
39 LED3 O LED CMOS driver output pins, and maximum output current up to 20mA.
40 OREMOTE O Remote control signal output pin.
41~42 PSW1~PSW2 O External device power control pins.
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
33
32
31
30
29
28
27
26
25
24
23
44 43 42 41 40 39 38 37 36 35 34
OSC2 *
REMOTE *
KEYIN *
SW3
DO
DI
VSS
CLK
CS
K0
K1
K2 K3 Vdd S0/K0 S1/K1 S2/K2 S3/K3 S4/K4 S5/K5 S6 S7
G4
G5
S17/G6
S14/G7
S13/G8
S12/G9
Vee
S11/G10
S10
S9
S8
OSC1
Vss
* PSW1 * PSW2
* OREMOTE
LED3
Vdd
G0 G1 G2 G3