AD6315
1/4- to 1/12 Duty VFD Controller/Driver


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.
Rev. A5 Dec 29, 2003
1/16

null 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
null 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.



null Pin Assignments

Seg
19
/Grid
10
KEY
2
KEY
1
STBCLK
D
IN
D
OUT
OSC
LED
4
LED
3
LED
1
34
35
36
37
38
39
40
41
42
43
44
22
21
20
19
18
17
16
15
14
13
12
1110987654321
2324252627282930313233
LED
2
Seg
18
/Grid
11
Seg
17
/Grid
12
V
EE
Seg
16
/KS
16
Seg
15
/KS
15
Seg
14
/KS
14
Seg
13
/KS
13
Seg
12
/KS
12
Seg
11
/KS
11
Seg
10
/KS
10
Seg1/KS1
VDD
VSS
Seg2/KS2
Seg3/KS3
Seg4/KS4
Seg5/KS5
Seg6/KS6
Seg7/KS7
Seg8/KS8
Seg9/KS9
VSS
VDD
Grid1
Grid2
Grid3
Grid4
Seg23/Grid6
Seg22/Grid7
Seg21/Grid8
Seg20/Grid9
Seg24/Grid5