HT1647A Просмотр технического описания (PDF) - Holtek Semiconductor
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Компоненты Описание
производитель
HT1647A Datasheet PDF : 19 Pages
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Symbol
Parameter
IOL2
DB0~DB3 Sink Current
IOH2
DB0~DB3 Source Current
IOL3
LCD Common Sink Current
IOH3
LCD Common Source Current
IOL4
LCD Segment Sink Current
IOH4
LCD Segment Source Current
RPH1
Pull-high Resistor
RPH2
Pull-high Resistor
RPL
Pull-low Resistor
PATENTED
HT1647A
Test Conditions
VDD
Conditions
Min. Typ. Max. Unit
3V VOL=0.3V
1.2 2.5
¾
mA
5V VOL=0.5V
3
6
¾ mA
3V VOH=2.7V
-0.9 -1.8 ¾ mA
5V VOH=4.5V
-2 -4
¾ mA
3V VOL=0.3V
80 160 ¾
mA
5V VOL=0.5V
180 360 ¾
mA
3V VOH=2.7V
-40 -80 ¾
mA
5V VOH=4.5V
-90 -180 ¾
mA
3V VOL=0.3V
50 100 ¾
mA
5V VOL=0.5V
120 240 ¾
mA
3V VOH=2.7V
-30 -60 ¾
mA
5V VOH=4.5V
-70 -140 ¾
mA
3V
150 250 410 kW
DB0~DB3, WR, CS, RD
5V
60 125 210 kW
3V
OP2, OP3
5V
150 250 410 kW
60 125 210 kW
3V
OP1
5V
150 250 410 kW
60 125 210 kW
A.C. Characteristics
Symbol
Parameter
fSYS1 System Clock
fSYS2 System Clock
fSYS3 System Clock
fLCD1 LCD Frame Frequency
fLCD2 LCD Frame Frequency
fLCD3 LCD Frame Frequency
tCOM LCD Common Period
fCLK1 4-Bit Data Clock (WR Pin)
Test Conditions
VDD
Conditions
3V
On-chip RC oscillator
5V
3V
Crystal oscillator
5V
3V
External clock source
5V
3V
On-chip RC oscillator
5V
3V
Crystal oscillator
5V
3V
External clock source
5V
¾ n: Number of COM
3V
Duty cycle 50%
5V
Ta=25°C
Min. Typ. Max. Unit
22 32
40 kHz
24 32
40 kHz
¾ 32.768 ¾ kHz
¾ 32.768 ¾ kHz
¾
32
¾ kHz
¾
32
¾ kHz
61/117 89/170 111/213 Hz
61/117 89/170 111/213 Hz
¾
64
¾
Hz
¾
64
¾
Hz
¾
64
¾
Hz
¾
64
¾
Hz
¾ n/fLCD ¾
sec
¾
¾
150 kHz
¾
¾
300 kHz
Rev. 1.40
6
April 29, 2011
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