HT16270 Просмотр технического описания (PDF) - Holtek Semiconductor
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производитель
HT16270 Datasheet PDF : 17 Pages
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HT16270
A.C. Characteristics
Ta=25°C
Symbol
Parameter
fSYS
System Clock
Test Conditions
VDD Conditions
3V
Crystal oscillator
5V
Min. Typ. Max. Unit
¾ 32 ¾ kHz
¾ 32 ¾ kHz
fLCD
LCD Frame Frequency
3V
¾ 64 ¾ Hz
Crystal oscillator
5V
¾ 64 ¾ Hz
tCOM
fCLK1
LCD Common Period
Serial Data Clock (WR Pin)
¾ n: Number of COM ¾ n/fLCD ¾ sec
3V
Duty cycle 50%
5V
¾ ¾ 150 kHz
¾ ¾ 300 kHz
fCLK2 Serial Data Clock (RD Pin)
3V
Duty cycle 50%
5V
¾ ¾ 75 kHz
¾ ¾ 150 kHz
tCS
Serial Interface Reset Pulse
Width
(Figure 3)
¾
CS
¾ 250 ¾ ns
tCLK
WR, RD Input Pulse Width
Write mode
3V
Read mode
(Figure 1)
Write mode
5V
Read mode
3.34 ¾
6.67 ¾
1.67 ¾
3.34 ¾
¾
ms
¾
¾
ms
¾
tr, tf
Rise/Fall Time Serial Data Clock 3V
Width
(Figure 1) 5V
¾
¾ 120 ¾ ns
tsu
Setup Time for DATA to WR, RD 3V
Clock Width
(Figure 2) 5V
¾
¾ 120 ¾ ns
th
Hold Time for DATA to WR, RD 3V
Clock Width
(Figure 2) 5V
¾
¾ 120 ¾ ns
tsu1
Setup Time for CS to WR, RD 3V
Clock Width
(Figure 3) 5V
¾
¾ 100 ¾ ns
th1
Hold Time for CS to WR, RD
3V
Clock Width
(Figure 3) 5V
¾
¾ 100 ¾ ns
7
April 21, 2000
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