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UPD16312 Datasheet(PDF) 2 Page - NEC

Part No. UPD16312
Description  1/4- to 1/11-DUTY FIPTM VFD CONTROLLER/DRIVER
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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 2 page
background image
2
PD16312
BLOCK DIAGRAM
DIN
DOUT
CLK
Key1
to
Key4
SW1
to
SW4
STB
R
4
4
OSC
4-bit latch
Key data memory (4
× 6)
Key data memory (4
× 6)
Timing generator key scan
Display memeory
16 bits
× 11 words
Command decoder
Dimming circuit
4-bit
latch
11
6
5
5
5
16
11
Seg1
Seg11
Seg12/Grid11
Seg16/Grid7
Grid1
Grid6
11-bit
shift
register
Data
selector
Grid
driver
Seg-
ment
driver
16-bit
output
latch
Serial I/F
VDD
LED1
LED4
VDD
(+5 V)
VSS
(0 V)
VEE
(
−30 V)




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