AD6315
1/4- to 1/12 Duty VFD Controller/Driver
Features
- Multiple display modes
(16-segment & 12-digit to 24-segment & 4-digit)
- Key scanning (16 x 2 matrix)
- Dimming circuit (eight steps)
- High-voltage output ( V
EE (max)
= V
DD
– 35V )
- 4 channel LED ports
- No external resistors necessary for driver outputs
(P-ch open-drain + pull-down resistor output)
- Serial interface (CLK, STB, D
IN
, D
OUT
)
- Package: 44-pin plastic QFP and LQFP
General Description
The AD6315 is a VFD (Vacuum Fluorescent Display
or fluorescent Indicator Panel) driver that is driven
on a 1/4- to 1/12- duty factor. It consists of 16
segments and 4 grids output lines, 8 segments /
grid output driving lines, a display memory, a control
circuit, and a key scan circuit. Serial data is input to
the AD6315 through a 3-wire serial interface. This
VFD driver is ideal as a peripheral device for a
single-chip microcomputer.
Pin Assignments
Seg
19
/Grid
10
Seg
18
/Grid
11
Seg
17
/Grid
12
Seg
16
/KS
16
Seg
15
/KS
15
Seg
14
/KS
14
Seg
13
/KS
13
Seg
12
/KS
12
Seg
11
/KS
11
24
Seg
10
/KS
10
23
22
33
32
31
30
V
EE
29
28
27
26
34
Seg
20
/Grid
9
Seg
21
/Grid
8
Seg
22
/Grid
7
Seg
23
/Grid
6
Seg
24
/Grid
5
Grid
4
Grid
3
Grid
2
Grid
1
V
DD
V
SS
25
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
V
SS
35
36
37
38
39
40
41
42
43
44
10
1
2
3
4
5
6
7
8
D
OUT
OSC
CLK
LED
2
LED
3
LED
4
STB
9
KEY
1
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
2
LED
1
D
IN
11
12
13
14
15
16
17
18
19
20
21
Rev. A5 Dec 29, 2003
1/16
ANACHIP [ ANACHIP CORP ]
