HT16220
A.C. Characteristics
Symbol
f
SYS
f
LCD
t
COM
f
CLK1
f
CLK2
t
CS
Parameter
System Clock
LCD Frame Frequency
LCD Common Period
Serial Data Clock (WR Pin)
Serial Data Clock (RD Pin)
Serial Interface Reset Pulse
Width
(Figure 3)
Test Conditions
V
DD
3V
5V
3V
5V
¾
3V
5V
3V
5V
¾
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
3V
5V
Conditions
Crystal oscillator
Crystal oscillator
n: Number of COM
Duty cycle 50%
Duty cycle 50%
CS
Write mode
Read mode
Write mode
Read mode
¾
Min.
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
3.34
6.67
1.67
3.34
¾
Typ.
32
32
64
64
n/f
LCD
¾
¾
¾
¾
250
¾
¾
¾
¾
120
Ta=25°C
Max. Unit
¾
¾
¾
¾
¾
150
300
75
150
¾
¾
¾
¾
¾
¾
kHz
kHz
Hz
Hz
sec
kHz
kHz
kHz
kHz
ns
ms
ms
ns
t
CLK
WR, RD Input Pulse Width
(Figure 1)
t
r
, t
f
Rise/Fall Time Serial Data
Clock
(Figure 1)
Setup Time for DATA to WR,
RD Serial Data Clock
(Figure 2)
Hold Time for DATA to WR,
RD Serial Data Clock
(Figure 2)
Setup Time for CS to WR, RD
Clock Width
(Figure 3)
Hold Time for CS to WR, RD
Clock Width
(Figure 3)
t
SU
¾
¾
120
¾
ns
t
h
¾
¾
120
¾
ns
t
SU1
t
h1
¾
¾
¾
¾
100
100
¾
¾
ns
ns
7
April 21, 2000
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
