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PDF AD6312 Data sheet ( Hoja de datos )
| Número de pieza | AD6312 | |
| Descripción | 1/4- to 1/11 Duty VFD Controller/Driver | |
| Fabricantes | Anachip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AD6312 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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1/4- to 1/11 Duty VFD Controller/Driver
AD6312
Features
˙4-pin serial interface
˙Key scanning (6× 4 matrices)
˙Programming display modes (11-segments & 11-
digits to 16-segments & 6-digits)
˙Programming dimming step
˙High-voltage output (VDD-35V max).
˙4 channels LED ports.
˙4-pin General-purpose input port
˙Built-in oscillator
˙No external resistor necessary for driver outputs
General Description
The AD6312 is a VFD (Vacuum Fluorescent
Display) controller/driver that is driven on a 1/4- to
1/11 duty factor (include key scan). It consists of 5
segment output lines, 6 segment/key scan output
lines, 6 grid output lines, 5 segment/grid output
drive lines, a display memory, a control circuit, and
a key scan circuit. Serial data is input to the
AD6312 through a four-line serial interface.
Pin Assignments
Grid4
Grid3
Grid2
Grid1
VDD
LED4
LED3
LED2
LED1
VSS
OSC
34
35
36
37
38
39
40
41
42
43
44
22 Seg8
21 Seg7
20 Seg6 / KS6
19 Seg5 / KS5
18 Seg4 / KS4
17 Seg3 / KS3
16 Seg2 / KS2
15 Seg1 / KS1
14 VDD
13 Key4
12 Key3
Use all 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. A4 Dec 29, 2003
1/13
1 page  
1/4- to 1/11 Duty VFD Controller/Driver
AD6312
Function Descriptions
1.0 Commands
Commands set the display mode and status of the VFD driver. The first 1 byte input to the AD6312 through
the DIN pin after the STB pin has fallen is regarded as a command. If STB is set high while a commands/data
are transmitted, serial communication is initialized, and the commands/data being transmitted are invalid
(however, the commands/data previously transmitted remain valid).
1.1 Display mode setting commands
These commands initialize the AD6312 and select the number of segments and the number of grids (4 grids
& 16 segments to 11 grids & 11 segments to). When these commands are executed, the display is forcibly
turned off, and key scanning is also stopped. To resume display, the display command “ON” must be
executed. If the same mode is selected, however, nothing happens.
MSB
LSB
0 0 - - - b2 b1 b0
Irrelevant
Display mode settings
000: 4 digits, 16 segments
001: 5 digits, 16 segments
010: 6 digits, 16 segments
011: 7 digits, 15 segments
100: 8 digits, 14 segments
101: 9 digits, 13 segments
110: 10 digits, 12 segments
111: 11 digits, 11 segments
On power application, the 11-digit, 11-segment mode is selected.
1.2 Data setting commands
These commands set data write and data read modes. On power application, the normal
operation and address increment modes are set.
MSB
LSB
0 1 - - b3 b2 b1 b0
Irrelevant
Data write and read mode settings.
00: Write data to display memory.
01: Write data to LED port.
10: Read key data.
11: Read SW data.
Address increment mode settings (display memory).
0: Incremenets address after data has been written.
1: Fixes address.
Test mode settings
0: Normal operation
1: Test mode
Anachip Corp.
www.anachip.com.tw
5/13
Rev. A4 Dec 29, 2003
5 Page 
1/4- to 1/11 Duty VFD Controller/Driver
Package Information
(1) Package Type: QFP-44L
Dimension in millimeter (mm.)
13.2 ± 0.5
10.0 ± 0.5
33
34
23
22
AD6312
2.7(MAX.)
10.0 13.2
± 0.5 ± 0.5
44
1
12
11
0.15 TYP.
1.6 TYP.
0.3 TYP. 0.8 TYP.
0.88 TYP.
Anachip Corp.
www.anachip.com.tw
11/13
Rev. A4 Dec 29, 2003
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AD6312.PDF ] | |
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