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AD6312 PDF 데이터시트 ( Data , Function )

부품번호 AD6312 기능
기능 1/4- to 1/11 Duty VFD Controller/Driver
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AD6312 데이터시트, 핀배열, 회로
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




AD6312 pdf, 반도체, 판매, 대치품
1/4- to 1/11 Duty VFD Controller/Driver
AD6312
Absolute Maximum Ratings (TA=25oC,VSS=0V )
Parameter
Logic Supply Voltage
Driver Supply Voltage
Logic Input Voltage
VFD Driver Output Voltage
LED Driver Output Current
VFD Driver Output Current
Operating Ambient Temperature
Storage Temperature
Symbol
VDD
VEE
VI1
VO2
IO1
IO2
TOPT
TSTG
Rating
-0.5 to +7.0
VDD +0.5 to VDD -40
-0.5 to VDD +0.5
VEE-0.5 to VDD +0.5
+15
-40 (grid)
-15 (segment)
-25 to +85
-50 to +125
Unit
V
V
V
V
mA
mA
oC
oC
Operating Conditions (TA=0 to +70 oC,VSS=0V)
Parameter
Logic Supply Voltage
High-Level Input Voltage
Low-Level Input Voltage
Driver Supply Voltage
Symbol
VDD
VIH
VIL
VEE
Conditions
Min.
4.5
0.7·VDD
0
0
Typ.
5
Max.
5.5
VDD
0.3·VDD
VDD-35
Unit
V
V
V
V
DC Characteristics (TA=0 to 70 oC, VDD=4.5 to 5.5V, VSS=0V, VEE=VDD-35V)
Parameter
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
High-Level Input Voltage
Low-Level Input Voltage
Symbol
VOH1
VOL1
VOL2
IOH21
IOH22
IOLEAK
RL
VIH
VIL
Conditions
LED1-LED4, IOH1=-1mA
LED1-LED4, IOL1=12mA
DOUT, IOL2=2mA
VO=VDD-2V, Seg1 to Seg11
VO=VDD-2V, Grid 1 to Grid6
Seg12/Grid11 to Seg16/Grid7
VO=VDD-35V, driver off
Driver output
Min.
0.9VDD
-3
-15
50
0.7VDD
Typ.
100
Max.
1
0.4
-10
150
0.3VDD
Unit
V
V
V
mA
mA
μA
kΩ
V
V
AC Characteristics (Ta=0 to +70 oC,VDD=4.5 to 5.5 V, VEE=-30V)
Parameter
Oscillation Frequency
Maximum Clock Frequency
Clock Pulse Width
Strobe Pulse Width
Data Setup Time
Data Hold Time
Clock-Strobe Time
Wait Time
Note : Refer to page 8.
Symbol
fOSC
fmax.
PWCLK
PWSTB
tSETUP
tHOLD
tCLK-STB
tWAIT
Conditions
R=51 kΩ
Duty=50%
CLK↑→STB
CLK↑→CLK(Note)
Min.
350
500
1
100
100
1
1
Typ.
500
Max.
650
1
Unit
KHZ
MHZ
ns
µs
ns
ns
µs
µs
Anachip Corp.
www.anachip.com.tw
4/13
Rev. A4 Dec 29, 2003

4페이지










AD6312 전자부품, 판매, 대치품
1/4- to 1/11 Duty VFD Controller/Driver
AD6312
3.0 LED Port
Data is written to the LED port with the write command, starting from the least port’s least significant bit.
When a bit of this port is 0, the corresponding LED lights; when the bit is 1, the LED turns off. The data of
bits 5 through 8 are ignored. On power application, all LEDs are unlit.
MSB
LSB
- - - - b3 b2 b1 b0
Don't care
LED1
LED2
LED3
LED4
4.0 Key Matrix and Key-Input data Storage RAM
The key matrix is made up of a 6× 4 matrix, as shown below.
KEY1
KEY2
KEY3
KEY4
The data of each key is stored as illustrated below, and is read with the read command, starting
from the least significant bit.
KEY1...KEY4
Seg1/KS1
Seg3/KS3
Seg5/KS5
b0--------b3
KEY1...KEY4
Seg2/KS2
Seg4/KS4
Seg6/KS6
b4--------b7
Reading sequence
Anachip Corp.
www.anachip.com.tw
7/13
Rev. A4 Dec 29, 2003

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