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HT1647A Datasheet(PDF) 6 Page - Holtek Semiconductor Inc

Part # HT1647A
Description  64x16 LCD Controller for I/O MCU
Download  19 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT1647A Datasheet(HTML) 6 Page - Holtek Semiconductor Inc

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Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
IOL2
DB0~DB3 Sink Current
3V
VOL=0.3V
1.2
2.5
¾
mA
5V
VOL=0.5V
36
¾
mA
IOH2
DB0~DB3 Source Current
3V
VOH=2.7V
-0.9
-1.8
¾
mA
5V
VOH=4.5V
-2
-4
¾
mA
IOL3
LCD Common Sink Current
3V
VOL=0.3V
80
160
¾mA
5V
VOL=0.5V
180
360
¾mA
IOH3
LCD Common Source Current
3V
VOH=2.7V
-40
-80
¾mA
5V
VOH=4.5V
-90
-180
¾mA
IOL4
LCD Segment Sink Current
3V
VOL=0.3V
50
100
¾mA
5V
VOL=0.5V
120
240
¾mA
IOH4
LCD Segment Source Current
3V
VOH=2.7V
-30
-60
¾mA
5V
VOH=4.5V
-70
-140
¾mA
RPH1
Pull-high Resistor
3V
DB0~DB3, WR,CS,RD
150
250
410
k
W
5V
60
125
210
k
W
RPH2
Pull-high Resistor
3V
OP2, OP3
150
250
410
k
W
5V
60
125
210
k
W
RPL
Pull-low Resistor
3V
OP1
150
250
410
k
W
5V
60
125
210
k
W
A.C. Characteristics
Ta=25
°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VDD
Conditions
fSYS1
System Clock
3V
On-chip RC oscillator
22
32
40
kHz
5V
24
32
40
kHz
fSYS2
System Clock
3V
Crystal oscillator
¾
32.768
¾
kHz
5V
¾
32.768
¾
kHz
fSYS3
System Clock
3V
External clock source
¾
32
¾
kHz
5V
¾
32
¾
kHz
fLCD1
LCD Frame Frequency
3V
On-chip RC oscillator
61/117 89/170 111/213
Hz
5V
61/117 89/170 111/213
Hz
fLCD2
LCD Frame Frequency
3V
Crystal oscillator
¾
64
¾
Hz
5V
¾
64
¾
Hz
fLCD3
LCD Frame Frequency
3V
External clock source
¾
64
¾
Hz
5V
¾
64
¾
Hz
tCOM
LCD Common Period
¾ n: Number of COM
¾
n/fLCD
¾
sec
fCLK1
4-Bit Data Clock (WR Pin)
3V
Duty cycle 50%
¾¾
150
kHz
5V
¾¾
300
kHz
HT1647A
Rev. 1.40
6
April 29, 2011
PATENTED


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