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AD7312 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part # AD7312
Description  1/4 to 1/11 Duty VFD Controller/Driver & Standby Master/Slave
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AD7312
1/4 to 1/11 Duty VFD Controller/Driver & Standby Master/Slave (Preliminary)
Anachip Corp.
www.anachip.com.tw
Rev. A2 Dec 29, 2003
3/12
Pin Descriptions
Symbol
Name
No.
Description
DIN
Data input
6
Input serial data at rising edge of shift clock,
starting from the low order bit.
DOUT
Data output
5
Output serial data at the falling edge of the shift
clock, starting from low order bit. This is N-ch
open-drain output pin.
STB
Strobe
9
Initializes serial interface at the rising or falling
edge of the AD7312. It then waits for reception of
a command. Data input after STB falling is
processed as a command. While command data
is processed, current processing is stopped, and
the serial interface is initialized. While STB is
high, CLK is ignored.
CLK
Clock input
8
Reads serial data at the rising edge, and outputs
data at the falling edge.
OSC
Oscillator pin
44
Connect resistor in between this pin and Vdd to
set up the oscillation frequency.
Seg7 to Seg11
High-voltage output (Segment)
21 to 25
Segment output pins
Seg1/KS1 to
Seg6/KS6
High-voltage output
15 to 20
Multi-function pins, Segment output pins (Dual
function as key scan source)
Grid1 to Grid6
High-voltage output (Grid)
32 to 37
Grid output pins
Seg12/Grid11 to
Seg16/Grid7
High-voltage output (Segment/grid)
26,
28 to 31
These pins are selectable for segment or grid
driving.
LED1 and LED4
LED output
39 and 42
CMOS output
RMBUF
Remote Control Buffer
40
CMOS output
PSV
Power Saving Output
41
CMOS output
KEY1 to KEY4
Key data input
10 to 13
Data input to these pins is latched at the end of
the display cycle.
VDD
Logic power
14, 38
Logic power supply
VSS
Logic ground
7, 43
Connect this pin to system GND.
VEE
Pull-down level
27
Driver power supply
SW1 and SW4
Switch input
1 and 4
These pins constitute a 2-bit general-purpose
input port.
RMIN
Remote Control Input
2
Input pin
SKEY
Standby Key Input
3
Input pin


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