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PDF AD6315 Data sheet ( Hoja de datos )
| Número de pieza | AD6315 | |
| Descripción | 1/4- to 1/12 Duty VFD Controller/Driver | |
| Fabricantes | Anachip | |
| Logotipo |  |
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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
1 page  
1/4- to 1/12 Duty VFD Controller/Driver
AD6315
Electrical Characteristics (TA= -20 to +70°C, VDD = 4.5 to 5.5V, VSS = 0V, VEE = VDD –35V)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
High-level output voltage
Low-level output voltage
Low-level output voltage
High-level output current
High-level output current
Driver leakage current
Output pull-down resistor
Input current
High-level input voltage
Low-level input voltage
Hysteresis voltage
Dynamic current consumption
VOH1
VOL1
VOL2
IOH21
IOH22
IOLEAK
RL
II
VIH
VIL
VH
IDDdyn
LED1 – LED4, IOH1 = -12 mA VDD -1
V
LED1 – LED4, IOL1 = +12mA
1V
DOUT, IOL2 =2mA
VO= VDD –2V,
Seg1/KS1 to Seg16/KS16
VO= VDD –2V,Grid1 to Grid4
Seg17/Grid12 to Seg24/Grid5
VO= VDD –35V, driver off
-0.3
-15
0.4 V
mA
mA
-10 µA
Driver output
35 45 120 kΩ
VI=VDD or VSS
﹣1
﹢1 µA
0.7VDD
V
0.3 VDD V
CLK, DIN, STB
0.35 V
Under no load, display off
5 mA
Switching Characteristics (TA= -20 to +70°C, VDD = 4.5 to 5.5V, VEE = –30V)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Oscillation frequency
Propagation delay time
Rise time
Fall time
fOSC
R=82 kΩ
350 500 650 kHz
tPHZ
tPZL
tTZH1
tTZH2
tTHZ
CLK→DOUT
CL=15pF,RL=10 kΩ
CL=300pF
Seg1/KS1 to Seg16/KS16
Grid1 to Grid4,
Seg17/Grid12 to Seg24/Grid5
CL=300pF, Segn, Gridn
300 ns
100 ns
2 µS
0.5 µS
160 µS
Maximum clock frequency FMAX.
Duty=50%
1 MHz
Input capacitance
CI
15 pF
Anachip Corp.
www.anachip.com.tw
5/16
Rev. A5 Dec 29, 2003
5 Page 
1/4- to 1/12 Duty VFD Controller/Driver
AD6315
STB
DIN
CLK
DOUT
b0 b1 b2 b3 b4 b5 b6 b7
12345678
123456
t (Note)
WAIT
b0 b1 b2 b3 b4 b5
A data read command is set.
Data is read.
Transmission (data read)
Note : When data is read, a wait time tWAIT of 1 µs is necessary since the rising of the eighth clock that has set the command, until the
falling of the first clock that has read the data.
Remark : Because the DOUT pin is an N-ch, open-drain output pin, be sure to connect an external pull-up resistor (1 kΩ to 10 kΩ) to this
pin.
(8) Switching Characteristic Waveforms
Typical Characteristics (Unless otherwise specified, TA= 25°C, VDD = 5V, VEE = VDD –35V)
fOSC
OSC 50%
STB
CLK
DIN
DOUT
Sn/Gn
PWCLK
PWCLK
tSETUP
tHOLD
tTHZ
90%
10%
tPZL
PWSTB
tCLK-STB
tPHZ
tTHZ
Anachip Corp.
www.anachip.com.tw
11/16
Rev. A5 Dec 29, 2003
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AD6315.PDF ] | |
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