AD6311
1/8- to 1/16 Duty VFD Controller/Driver
Features
- 4-pin serial interface
- Key scanning (12x4 matrices)
- Programming display modes (16-digit & 12-
segment to 8-digit & 20-segment)
- Programming dimming step
- High-voltage output (V
DD
-35V max)
- 5 channels LED ports
- 4-pin general-purpose input port
- Built-in oscillator
- No external resistor necessary for driver outputs
General Description
The AD6311 is a VFD (Vacuum Fluorescent
Display) controller/driver that is driven on a 1/8- to
1/16 duty factor (include key scan). It consists of 12
segment/key scan output lines, 8 grid output lines,
8 segment/grid output drive lines, a display memory,
a control circuit, and a key scan circuit. Serial data
is input to the AD6311 through a four-line serial
interface.
Pin Assignments
Seg
19
/ Grid
10
Seg
18
/ Grid
11
Seg
17
/ Grid
12
Seg
16
/ Grid
13
Seg
15
/ Grid
14
Seg
14
/ Grid
15
28
Seg
13
/ Grid
16
27
26
25
24
23
22
21
20
19
18
17
16
15
10
11
12
13
14
Seg
20
/ Grid
9
Grid
6
Grid
7
Grid
8
39
38
37
36
35
34
33
V
DD
V
EE
32
31
30
Grid
5
Grid
4
Grid
3
Grid
2
Grid
1
V
DD
LED
5
LED
4
LED
3
LED
2
LED
1
VSS
OSC
40
41
42
43
44
45
46
47
48
49
50
51
52
29
Seg
12
/ KS
12
Seg
11
/ KS
11
Seg
10
/ KS
10
Seg
9
/ KS
9
Seg
8
/ KS
8
Seg
7
/ KS
7
Seg
6
/ KS
6
Seg
5
/ KS
5
Seg
4
/ KS
4
Seg
3
/ KS
3
Seg
2
/ KS
2
Seg
1
/ KS
1
V
DD
1
2
3
4
5
6
7
8
Sw
1
Sw
2
Sw
3
Sw
4
D
IN
9
Key
1
Key
2
Key
3
D
OUT
Use all the power pins.
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Key
4
CLK
NC
STB
Rev. A5 Dec 29, 2003
1/11
ANACHIP [ ANACHIP CORP ]
