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AD6315 Schematic ( PDF Datasheet ) - Anachip

Teilenummer AD6315
Beschreibung 1/4- to 1/12 Duty VFD Controller/Driver
Hersteller Anachip
Logo Anachip Logo 




Gesamt 16 Seiten
AD6315 Datasheet, Funktion
1/4- to 1/12 Duty VFD Controller/Driver
AD6315
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 ( VEE (max) = VDD – 35V )
- 4 channel LED ports
- No external resistors necessary for driver outputs
(P-ch open-drain + pull-down resistor output)
- Serial interface (CLK, STB, DIN, DOUT)
- 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
Seg20/Grid9
Seg21/Grid8
Seg22/Grid7
Seg23/Grid6
Seg24/Grid5
Grid4
Grid3
Grid2
Grid1
VDD
VSS
Seg9/KS9
Seg8/KS8
Seg7/KS7
Seg6/KS6
Seg5/KS5
Seg4/KS4
Seg3/KS3
Seg2/KS2
Seg1/KS1
VDD
VSS
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






AD6315 Datasheet, Funktion
1/4- to 1/12 Duty VFD Controller/Driver
AD6315
Timing Characteristics (TA= -20 to +70°C, VDD = 4.5 to 5.5V)
Parameter
Clock pulse width
Strobe pulse width
Data setup time
Data hold time
Clock-strobe time
Wait time
Symbol
PWCLK
PWSTB
Tsetup
tHOLD
tCLK-STB
tWAIT
Note : Refer to the Serial communication format.
Conditions
CLK STB
CLK STB (Note)
Min.
400
1
100
100
1
1
Typ. Max.
Unit
ns
µS
ns
ns
µs
µs
Function Descriptions
(1) Display RAM Address and Display Mode
The display RAM stores the data transmitted to the AD6315 through the serial communication. The
addresses are allocated in 8-bit units.
Seg1
00HL
03HU
06HL
09HL
0CHL
0FHL
12HL
15HL
18HL
1BHL
1EHL
21HL
Seg4 Seg8
00HU
03HU
06HU
09HU
0CHU
0FHU
12HU
15HU
18HU
1BHU
1EHU
21HU
Seg12
01HL
04HL
07HL
0AHL
0DHL
10HL
13HL
16HL
19HL
1CHL
1FHL
22HL
Seg16
01HU
04HU
07HU
0AHU
0DHU
10HU
13HU
16HU
19HU
1CHU
1FHU
22HU
Seg20
02HL
05HL
08HL
0BHL
0EHL
11HL
14HL
17HL
1AHL
1DHL
20HL
23HL
Seg24
02HU
05HU
08HU
0BHU
0EHU
11HU
14HU
17HU
1AHU
1DHU
20HU
23HU
DIG1
DIG2
DIG3
DIG4
DIG5
DIG6
DIG7
DIG8
DIG9
DIG10
DIG11
DIG12
b0
XXHL
Lower 4 bits
b3 b4
XXHU
Higher 4 bits
b7
Anachip Corp.
www.anachip.com.tw
6/16
Rev. A5 Dec 29, 2003

6 Page









AD6315 pdf, datenblatt
1/4- to 1/12 Duty VFD Controller/Driver
(9) Applications
Updating display memory by incrementing address
STB
CLK
DIN
Command 1
Command 2
Command 3
Data 1
Command 1 sets display mode
Command 2 sets data
Command 3 sets address
Data 1 to n transfers display data (36 bytes MAX.)
Command 4 controls display
Updating specific address
STB
AD6315
Data n
Command 4
CLK
DIN
Command 1
Command 2
Data
Command 2
Data
Command 1 sets data
Command 2 sets address
Data
display data
Anachip Corp.
www.anachip.com.tw
12/16
Rev. A5 Dec 29, 2003

12 Page





SeitenGesamt 16 Seiten
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