参数资料
型号: SPLC780D
厂商: Electronic Theatre Controls, Inc.
英文描述: 16COM/40SEG Controller/Driver
中文描述: 16COM/40SEG控制器/驱动器
文件页数: 28/48页
文件大小: 851K
代理商: SPLC780D
SPLC780D
8. APPLICATION CIRCUITS
Sunplus Technology Co., Ltd.
Proprietary & Confidential
28
NOV. 04, 2004
Version: 1.2
8.1. R-Oscillator
8.2. Interface to MPU
8.2.1. Interface to 8-bit MPU (6805)
8.2.2. Interface to 8-bit MPU (Z80)
The oscillation resistor R
f
is used only for the internal oscillator operation mode.
OSC
1
2
R
f
: 75.0K
±
2% ( when VDD = 3.0V)
R
f
: 91K
±
2% ( when VDD = 5.0V)
Since the oscillation frequency varies depending on the OSC
and OSC
pin capacitance, the wiring length to these pins should be minimized.
SunpusConidenia
0
200
400
0
100
200
300
400
Rosc ( Kohms )
F
75
270
0
200
400
600
0
100
200
300
400
Rosc ( Kohms )
F
270
VDD = 3.0V
VDD = 5.0V
PA0
|
PA7
PB0
PB1
PB2
8
E
RS
R / W
SPLC780D
16
40
LCD PANEL
16 COMMONS
X
40 SEGMENTS
6805
DB0
|
DB7
COM1
|
COM16
SEG1
|
SEG40
D0
|
D7
8
E
RS
R / W
SPLC780D
16
40
LCD PANEL
16 COMMONS
X
40 SEGMENTS
Z80
A1
|
A7
A0
7
IORQ
WR
COM1
|
COM16
SEG1
|
SEG40
DB0
|
DB7
Fo PARTMNERUseOny
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