參數(shù)資料
型號(hào): HT1623
廠商: Holtek Semiconductor Inc.
英文描述: RAM Mapping 48x8 LCD Controller for I/O C
中文描述: 內(nèi)存映射48x8 LCD控制器的I /業(yè)主立案法團(tuán)
文件頁(yè)數(shù): 7/18頁(yè)
文件大?。?/td> 155K
代理商: HT1623
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
I
OL3
LCD Segment Sink Current
3V
V
OL
=0.3V
50
100
A
5V
V
OL
=0.5V
120
240
A
I
OH3
LCD Segment Source Current
3V
V
OH
=2.7V
30
60
A
5V
V
OH
=4.5V
70
140
A
R
PH
Pull-high Resistor
3V
DATA, WR, CS, RD
100
200
300
k
5V
50
100
150
k
A.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
V
DD
Conditions
f
SYS1
System Clock
3V
On-chip RC oscillator
22
32
40
kHz
5V
24
32
40
kHz
f
SYS2
System Clock
3V
External clock source
32
kHz
5V
32
kHz
f
LCD1
LCD Frame Frequency
3V
On-chip RC oscillator
44
64
80
Hz
5V
48
64
80
Hz
f
LCD2
LCD Frame Frequency
3V
External clock source
64
Hz
5V
64
Hz
t
COM
LCD Common Period
n: Number of COM
n/f
LCD
sec
f
CLK1
Serial Data Clock (WR Pin)
3V
Duty cycle 50%
150
kHz
5V
300
kHz
f
CLK2
Serial Data Clock (RD Pin)
3V
Duty cycle 50%
75
kHz
5V
150
kHz
t
CS
Serial Interface Reset Pulse
Width
(Figure3)
CS
250
ns
t
CLK
WR, RD Input Pulse Width
(Figure1)
3V
Write mode
3.34
s
Read mode
6.67
5V
Write mode
1.67
s
Read mode
3.34
HT1623
7
April 21, 2000
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