參數(shù)資料
型號: HD66712
廠商: Hitachi,Ltd.
英文描述: Dot-Matrix Liquid Crystal Display Controller/Driver
中文描述: 點陣液晶顯示控制器/驅動器
文件頁數(shù): 4/88頁
文件大?。?/td> 662K
代理商: HD66712
HD66712U
367
LCD-II Family Comparison
Item
HD66702
HD66710
HD66712S
HD66712U
Power supply voltage
5V ±10 %
(standard)
2.7V to 5.5V
(low voltage)
2.7V to 5.5V
2.7V to 5.5V
Liquid crystal drive
voltage
3.0V to 8.3V
3.0V to 13.0V
3.0V to 13.0V
2.7V to 11.0V
Maximum display digits
per chip
20 characters
×
2 lines
16 characters
×
2 lines/
8 characters
×
4 lines
24 characters
×
2 lines/
12 characters
×
4 lines
Segment display
None
40 segments
60 segments
Display duty cycle
1/8, 1/11, and 1/16
1/17 and 1/33
1/17 and 1/33
CGROM
7,200 bits
(160 5
×
7 dot
characters and 32
5
×
10 dot
characters)
9,600 bits
(240 5
×
8 dot
characters)
9,600 bits
(240 5
×
8 dot
characters)
CGRAM
64 bytes
64 bytes
64 bytes
DDRAM
80 bytes
80 bytes
80 bytes
SEGRAM
None
8 bytes
16 bytes
Segment signals
100
40
60
Common signals
16
33
34
Liquid crystal drive
waveform
B
B
B
Bleeder resistor for LCD
power supply
External
(adjustable)
External
(adjustable)
External
(adjustable)
Clock source
External resistor or
external clock
External resistor or
external clock
External resistor or
external clock
R
oscillation frequency
(frame frequency)
320 kHz ±30%
(70 to 130 Hz for
1/8 and 1/16 duty
cycle; 51 to 95 Hz
for 1/11 duty cycle)
68 k
: 5-V
operation;
56 k
: (3-V
operation)
270 kHz ±30%
(56 to 103 Hz for
1/17 duty cycle;
57 to 106 Hz for
1/33 duty cycle)
91 k
: 5-V
operation;
75 k
: 3-V
operation
270 kHz ±30%
(56 to 103 Hz for
1/17 duty cycle;
57 to 106 Hz for
1/33 duty cycle)
91 k
: 5-V
operation;
75 k
: 3-V
operation
R
f
resistance
130 k
: 5-V
operation
110 k
: 3-V
operation
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