HT1625 - Topwaydisplay.com

HT1625
A.C. Characteristics
Ta=25C
Symbol
f SYS1
f SYS2
f LCD1
f LCD2
System Clock
System Clock
Parameter
LCD Frame Frequency
LCD Frame Frequency
V DD
Test Conditions
Conditions
Min. Typ. Max. Unit
3V
On-chip RC oscillator
22 32 40 kHz
5V 24 32 40 kHz
3V
External clock source
32 kHz
5V 32 kHz
3V
On-chip RC oscillator
44 64 80 Hz
5V 48 64 80 Hz
3V
External clock source
64 Hz
5V 64 Hz
t COM LCD Common Period n: Number of COM n/f LCD sec
f CLK1
f CLK2
t CS
Serial Data Clock (WR Pin)
Serial Data Clock (RD Pin)
Serial Interface Reset Pulse Width
(Figure 3)
3V
Duty cycle 50%
150 kHz
5V 300 kHz
3V
Duty cycle 50%
75 kHz
5V 150 kHz
CS 250 ns
t CLK WR,RDInput Pulse Width (Figure 1)
t r ,t f
tsu
t h
t su1
t h1
Rise or Fall Time Serial Data Clock
Width (Figure 1)
Setup Time for DATA to WR, RD
Clock Width (Figure 2)
Hold Time for DATA to WR,RDClock
Width (Figure 2)
Setup Time for CS to WR, RDClock
Width (Figure 3)
Hold Time for CS to WR, RDClock
Width (Figure 3)
3V Write mode 3.34 s
Read mode 6.67
5V Write mode 1.67 Read mode 3.34
s
3V
5V
120 ns
3V
5V
120 ns
3V
5V
120 ns
3V
5V
100 ns
3V
5V
100 ns
9 4 4 ,
+
JB
JH
8 , ,
'
#
/ ,
J+ J+
, *
9 4 4 ,
+
8 ) 1, , ) 6 )
#
JI K
JD
#
8 , ,
/ ,
8 , ,
/ ,
Figure 1
Figure 2
+ 5
#
JI K
JD
J+ 5
8 , ,
/ ,
9 4 4 ,
+
#
14 5 6
+
) 5 6
+
8 , ,
/ ,
Figure 3
Rev. 1.10 7 September 11, 2002