參數(shù)資料
型號(hào): HD66712
廠商: Hitachi,Ltd.
英文描述: Dot-Matrix Liquid Crystal Display Controller/Driver
中文描述: 點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器
文件頁(yè)數(shù): 81/88頁(yè)
文件大?。?/td> 662K
代理商: HD66712
HD66712U
444
10.Input/output current is excluded. When input is at an intermediate level with CMOS, the excessive
current flows through the input circuit to the power supply. To avoid this from happening, the input
level must be fixed high or low.
11.Applies only to external clock operation.
Oscillator
OSC1
OSC2
0.7 V
CC
0.5 V
CC
0.3 V
CC
T
h
T
l
t
fcp
t
fcp
Duty = T
h
+ T
l
T
h
×
Open
12.Applies only to the internal oscillator operation using oscillation resistor R
f
.
OSC1
OSC2
R
f
R :
R :
f
f
75 k
±
2% (when V = 3V to 4V)
91 k
±
2% (when V = 4V to 5V)
ii) HD66712U
R
f
: 110 k
±
2% (when V
CC
= 3V to 4V)
R
: 130 k
±
2% (when V
= 4V to 5V)
Since the oscillation frequency varies depending on the OSC1 and
OSC2 pin capacitance, the wiring length to these pins should be minimized.
V
CC
= 5V
400
300
270
200
50
100
R
f
(k
)
150
91
130
110
f
O
V
CC
= 3V
400
300
270
200
50
100
R
f
(k
)
150
f
O
75
Referential data
i) HD66712S
HD66712U (typ.)
HD66712S (typ.)
HD66712U (typ.)
HD66712S (typ.)
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