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參數(shù)資料
| 型號： | 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)： | 11/36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
11
(Continued)
Pin
No.
Symbol
Pin Name
Internal
Connection
Description
56
V
DD
V
DD
53
GND
Power-supply
pins
GND
Pins to which power is applied.
Normally, V
DD
=1.8~3.6V (3.0V Typ.) is applied.
In back-up mode (when CKSTP instructions
are being executed), voltage can be lowered to
1.0V. If voltage falls below 1.5V while the CPU
is operating, the CPU stops to prevent
malfunction (STOP mode). When the voltage
rises above 1.5V, the CPU restarts.
STOP mode can be detected by checking the
STOP
F/F
bit.
If
necessary,
execute
initialization or adjust clock by program.
When
detecting
or
preventing
CPU
malfunctions using an external circuit, STOP
mode can be invalidated and rendered non-
operative by program. In that case, all four bits
of the internal TEST port should be set to “1”.
If more than 1.8V is applied when the pin
voltage is 0, the device’s system is reset and
the program starts from address “0”. (power on
reset).(Note)
To operate the power on reset, the power
supply should start up in 10~100ms.
54
FM
IN
FM
programmabl
e counter
input
R
fIN2
Programmable counter input pin for FM,VHF
band.
The 1/2+pulse swallow system (VHF mode)
and the pulse swallow system (FM mode) are
selectable freely by program. At the VHF mode,
local oscillation output (VCO output) of
50~230MHz (0.2V
P-P
(Min)) is input and FM
mode, 40~130MHz (0.2V
P-P
(Min)) is input. A
built-in input amp and C coupling allow
operation at low-level input. (Note) when in the
PLL OFF mode or when set to AM
IN
input, the
input is pulled down.
(To be continued)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SC9318FB-033 | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:DTS MICROCONTROLLER FOR PORTABLE RADIO RECEIVER |
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