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AD6311 Schematic ( PDF Datasheet ) - Anachip

Teilenummer AD6311
Beschreibung 1/8- to 1/16 Duty VFD Controller/Driver
Hersteller Anachip
Logo Anachip Logo 




Gesamt 11 Seiten
AD6311 Datasheet, Funktion
1/8- to 1/16 Duty VFD Controller/Driver
AD6311
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 (VDD-35V max)
- 5 channels LED ports
- 4-pin general-purpose input port
- Built-in oscillator
- No external resistor necessary for driver outputs
Pin Assignments
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.
Grid5
Grid4
Grid3
Grid2
Grid1
VDD
LED5
LED4
LED3
LED2
LED1
VSS
OSC
40
41
42
43
44
45
46
47
48
49
50
51
52
26 Seg12 / KS12
25 Seg11 / KS11
24 Seg10 / KS10
23 Seg9 / KS9
22 Seg8 / KS8
21 Seg7 / KS7
20 Seg6 / KS6
19 Seg5 / KS5
18 Seg4 / KS4
17 Seg3 / KS3
16 Seg2 / KS2
15 Seg1 / KS1
14 VDD
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.
Rev. A5 Dec 29, 2003
1/11






AD6311 Datasheet, Funktion
1/8- to 1/16 Duty VFD Controller/Driver
AD6311
1.3 Address setting command
This command sets an address of the display memory. If address 30H or higher is set, the data is
ignored, until a correct address is set. On power application, the address is set to 00H.
MSB
LSB
1 1 b5 b4 b3 b2 b1 b0
1.4 Display control command
MSB
LSB
1 0 - - b3 b2 b1 b0
Address (00H-2FH)
Don't care
Sets dimming quantity.
000: Sets pulse width to 1/16.
001: Sets pulse width to 2/16.
010: Sets pulse width to 4/16.
011: Sets pulse width to 10/16.
100: Sets pulse width to 11/16.
101: Sets pulse width to 12/16.
110: Sets pulse width to 13/16.
111: Sets pulse width to 14/16.
Tums on/off display.
0: Display off (key scan continues )
1: Display on
On power application, the 1/16-pulse width is set, the display is turned off and key scanning is stopped.
2.0 Display RAM Address and Display Mode
The display RAM stores the data transmitted from an external device to the AD6311 through the serial
interface, and is assigned addresses as follows, in units of 8 bits:
Seg1 Seg4
Seg8
Seg12
Seg16
00 HL
00 HU
01 HL
01 HU
02 HL
03 HL
03 HU
04 HL
04 HU
05 HL
06 HL
06 HU
07 HL
07 HU
08 HL
09 HL
09 HU
0 AHL
0 AHU
0 BHL
0 CHL
0 CHU
0 DHL
0 DHU
0 EHL
0 FHL
0 FHU
10 HL
10 HU
11 HL
12 HL
12 HU
13 HL
13 HU
14 HL
15 HL
15 HU
16 HL
16 HU
17 HL
18 HL
18 HU
19 HL
19 HU
1 AHL
1 BHL
1 BHU
1 CHL
1 CHU
1 DHL
1 EHL
1 EHU
1 FHL
1 FHU
20 HL
21 HL
21 HU
22 HL
22 HU
23 HL
24 HL
24 HU
25 HL
25 HU
26 HL
27 HL
27 HU
28 HL
28 HU
29 HL
2 AHL
2 AHU
2 BHL
2 BHU
2 CHL
2 DHL
2 DHU
2 EHL
2 EHU
2 FHL
b0 b3 b4
XX HL
XXHU
b7
Seg20
GRID1
GRID2
GRID3
GRID4
GRID5
GRID6
GRID7
GRID8
GRID9
GRID10
GRID11
GRID12
GRID13
GRID14
GRID15
GRID16
Anachip Corp.
www.anachip.com.tw
6/11
Rev. A5 Dec 29, 2003

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