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DV-NC55U/C/M
11-10. IC5001 PT6312LQ FL DRIVER
Pin No.
Terminal name
1-4
SW1 to SW4
5
DOUT
6
DIN
7, 43
GND
8
CLK
9
STB
10-13
K1 to K4
14, 38
VDD
15-20
SG1/KS1 to
SG6/KS6
21-25
SG7 to SG11
26, 28-31
SG12/GR11
SG13/GR10 to
SG16/GR7
27
VEE
32-37
GR6 to GR1
42-39
LED1 to LED4
44
OSC
• Block Diagram
DIN
6
5
DOUT
8
CLK
9
STB
VDD
R
44
OSC
SW1
1
SW2
2
SW3
3
4
SW4
LED1
42
41
LED2
40
LED3
39
LED4
I/O
I
General purpose input pins
O
Data output pin (N-Channel, Open-Drain)
This pin outputs serial data at the falling edge of the shift clock (starting from the lower bit).
I
Data input pin
This pin inputs serial data at the rising edge of the shift clock (starting from the lower bit)
–
Ground pin
I
Clock input pin
This pin reads serial data at the rising edge and outputs data at the falling edge.
I
Serial interface strobe pin
The data input after the STB has fallen is processed as a command.
When this pin is "HIGH", CLK is ignored.
I
Key data input pins
The data inputted to these pins are latched at the end of the display cycle.
–
Logic power supply
O
High-voltage segment output pins also acts as the key source
O
High voltage segment output pin
High voltage segment/grid output pins
O
–
Pull-down level
O
High-voltage grid output pins
O
LED output pin
I
Osillator input pin
A resistor is connected to this pin to determine the oscillation frequency.
Control
Serial
Data
Interface
Display Memory
(16bits x 11 Words)
Timing Generator
OSC
General
Key Matrix Memory
Input
Register
LED
Driver
10 11 12 13
K1 K2 K3 K4
Operation function
Dimming Circuit
14, 38 7, 43
27
VDD
GND
VEE
70
15
SG1/KS1
16
SG2/KS2
SG3/KS3
17
18
SG4/KS4
19
SG5/KS5
20
SG6/KS6
21
SG7
Segment
Driver/
22
SG8
23
SG9
Grid
24
Driver/
SG10
25
SG11
Key Scan
Output
SG12/GR11
26
28
SG13/GR10
29
SG14/GR9
30
SG15/GR8
31
SG16/GR7
GR1
37
36
GR2
35
GR3
Grid
34
GR4
Driver
33
GR5
32
GR6
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