參數(shù)資料
型號(hào): HT1647
廠商: Holtek Semiconductor Inc.
英文描述: 4-Level Gray Scale 64 x 16 LCD Controller for I/O Μc(4級(jí)灰標(biāo)、用于I/O接口微機(jī)的64 x 16模式 LCD控制器 Controller for I/O Μc)
中文描述: 4級(jí)灰度64 × 16 LCD控制器的I / O微晶(4級(jí)灰標(biāo),用于的I / O接口微機(jī)的64 × 16模式液晶顯示控制器控制的I / O微晶)
文件頁(yè)數(shù): 8/24頁(yè)
文件大小: 190K
代理商: HT1647
A.C. Characteristics
Ta=25 C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
V
DD
3V
Conditions
f
SYS1
System Clock
On-chip RC oscillator
22
32
40
kHz
5V
24
32
40
kHz
f
SYS2
System Clock
3V
Crystal oscillator
32.768
kHz
5V
32.768
kHz
f
SYS3
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
Crystal oscillator
64
Hz
5V
64
Hz
f
LCD3
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
4-Bit Data Clock (WR Pin)
3V
Duty cycle 50%
150
kHz
5V
300
kHz
f
CLK2
4-Bit Data Clock (RD Pin)
3V
Duty cycle 50%
75
kHz
5V
150
kHz
t
CS
4-Bit 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
t
r
, t
f
Rise/Fall Time Serial Data
ClockWidth
(Figure1)
3V
120
ns
5V
t
su
Setup Time for DB to WR,
RDClockWidth
(Figure2)
3V
120
ns
5V
t
h
HoldTimeforDBtoWR,RD
ClockWidth
(Figure2)
3V
120
ns
5V
t
su1
Setup Time for CS to WR, RD
ClockWidth
(Figure3)
3V
100
ns
5V
t
h1
HoldTimeforCStoWR,RD
ClockWidth
(Figure3)
3V
100
ns
5V
HT1647
8
April 21, 2000
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