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PDF UPD16312GB-3B4 Data sheet ( Hoja de datos )

Número de pieza UPD16312GB-3B4
Descripción 1/4- to 1/11-DUTY FIP (VFD) CONTROLLER/DRIVER
Fabricantes NEC 
Logotipo NEC Logotipo



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DATA SHEET
MOS INTEGRATED CIRCUIT
PD16312
1/4- to 1/11-DUTY FIPTM (VFD) CONTROLLER/DRIVER
The PD16312 is a FIP (fluorescent Indicator Panel, or Vacuum Fluorescent Display) controller/driver that is
driven on a 1/4- to 1/11 duty factor. It consists of 11 segment 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 PD16312 through a
three-line serial interface. This FIP controller/driver is ideal as a peripheral device for a single-chip microcomputer.
FEATURES
• Multiple display modes (11-segment & 11-digit to 16-segment & 4-digit)
• Key scanning (6  4 matrix)
• Dimming circuit (eight steps)
• High-voltage output (VDD  35 V max).
• LED ports (4 chs., 20 mA max).
• General-purpose input port (4 bits)
• No external resistors necessary for driver outputs (P-ch open-drain + pull-down resistor output)
• Serial interface (CLK, STB, DIN, DOUT)
ORDERING INFORMATION
Part Number
PD16312GB-3B4
Package
44-pin plastic QFP ( 10)
Document No. IC-3307 (1st edition)
Date Published March 1997 P
Printed in Japan
© 1993

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UPD16312GB-3B4 pdf
PD16312
Display RAM Address and Display Mode
The display RAM stores the data transmitted from an external device to the PD16312 through the serial interface,
and is assigned addresses as follows, in 8 bits unit:
Seg1
Seg4
00HL
02HL
04HL
06HL
08HL
0AHL
0CHL
0EHL
10HL
12HL
14HL
Seg8
00HU
02HU
04HU
06HU
08HU
0AHU
0CHU
0EHU
10HU
12HU
14HU
Seg12
01HL
03HL
05HL
07HL
09HL
0BHL
0DHL
0FHL
11HL
13HL
15HL
Seg16
01HU
DIG1
03HU
DIG2
05HU
DIG3
07HU
DIG4
09HU
DIG5
0BHU
DIG6
0DHU
DIG7
0FHU
DIG8
11HU
DIG9
13HU
DIG10
15HU
DIG11
b0 b3 b4 b7
xxHL
xxHU
Lower 4 bits Higher 4 bits
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UPD16312GB-3B4 arduino
PD16312
Serial Communication Format
Reception (command/data write)
STB
If data continues
DIN b0 b1 b2
b6 b7
CLK
1
Transmission (data read)
23
78
STB
DIN
CLK
DOUT
b0 b1 b2 b3 b4 b5 b6 b7
1
2
345
67
8
t Note
WAIT
1
2
345
6
b0 b1 b2 b3 b4 b5
A data read command is set.
Data is read.
Because the DOUT pin is an N-ch, open-drain output pin, be sure to connect an external pull-up resistor to this pin
(1 k to 10 k).
Note When data is read, a wait time tWAIT of 1 s 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.
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