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UPD16681 Datasheet(PDF) 39 Page - NEC

Part # UPD16681
Description  LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS
PDF  56 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD16681 Datasheet(HTML) 39 Page - NEC

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Data Sheet S13104EJ5V0DS00
39
µµµµPD16681
Switching characteristics (unless otherwise specified, TA =
−−−−40 to +85 °°°°C)
VDD = 2.45 to 2.7 V
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Oscillation frequency
fOSC
Self-oscillation,
oscillation resistance R = 100 k
Ω
180
500
kHz
Transfer delay time
tPHL
SCK
↓→DATA↓
60
ns
Transfer delay time
tPLH
SCK
↓→DATA↑
60
ns
Remark
The TYP. value is a reference value when TA = 25
°C
VDD = 2.7 to 3.3 V
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Oscillation frequency
fOSC
Self-oscillation,
oscillation resistance R = 100 k
Ω
240
378
560
kHz
Transfer delay time
tPHL
SCK
↓→DATA↓
60
ns
Transfer delay time
tPLH
SCK
↓→DATA↑
60
ns
Remark
Use the following equation to determine the time per frame.
1 frame = 1/fOSC x 96 x number of duty
fOSC = 375 kHz, Given a 1/52 duty,
1 frame = 2.67
µs ( 96 x 52 = 13.1 ms ≅ 75 Hz)
•
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