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參數(shù)資料
| 型號(hào)： | SC9318FB |
| 廠商： | 杭州士景電子有限公司 |
| 英文描述： | DIGITAL TUNING SYSTEM |
| 中文描述： | 數(shù)字調(diào)諧系統(tǒng) |
| 文件頁數(shù)： | 8/36頁 |
| 文件大?。?/td> | 671K |
| 代理商： | SC9318FB |
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Silan
Semiconductors
SC9318-033
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002-01-16
8
(Continued)
Pin
No.
Symbol
Pin Name
Internal
Connection
Description
37~40
P1-0
~
P1-3
I/O port 1
The input and output of these 4 bit I/O ports
can be programmed in 1 bit units. By altering
the input to I/O ports set to input, the CLOCK
STOP and WAIT modes can be released, and
the MUTE bit of the MUTE pin can be set to
“1”.
41~44
P2-0
P2-1/
AD
IN1
P2-2/
AD
IN2
P2-3/
DC-REF
I/O port 2
/AD analog
voltage input
/AD analog
voltage input
/Reference
voltage input
To A/D converter
(P2-0 pin is excluded)
4 bit I/O ports.
Input and output may be programmed in 1 bit
units. Pins P2-1 through P2-2 can also be used
for analog input to the built-in 6 bit, 2-channel
A/D converter.
Conversion time of the built-in A/D converter
using the successive comparison method is
280
μ
s. The necessary pin can be programmed
to A/D analog input in 1 bit units, and P2-3 can
be set to the reference voltage input. Internal
power supply (V
DD
) or constant voltage (V
EE
)
can be used as the reference voltage. In
addition, constant voltage (V
EE
) can be input to
the A/D analog input so battery voltage, etc.,
can be easily detected. The reference voltage
input, for which a built-in operational amp is
used, has high impedance.
The A/D converter, and their control are all
executed by program.
45~46
P3-0
P3-1/
BUZR
I/O port 3
/Buzzer
output
2 bit I/O ports, whose input/output can be
programmed in 1 bit units.
The P3-1 pin also functions as the output for
the built-in buzzer circuit. The buzzer sound
can be output in 254 different tones between
18.75kHz and 147Hz, and at a duty of 50%.
The buzzer output, and all associated controls
can be programmed.
(To be continued)
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相關(guān)代理商/技術(shù)參數(shù) |
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