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參數(shù)資料
| 型號： | UPD17071 |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH PLL FREQUENCY SYNTHESIZER CONTROLLER FOR PORTABLE FM/AM RADIO AND TV |
| 中文描述： | 4位單片機(jī)與鎖相環(huán)頻率合成器控制器的便攜式調(diào)頻/調(diào)幅廣播電視 |
| 文件頁數(shù)： | 9/48頁 |
| 文件大小： | 296K |
| 代理商： | UPD17071 |
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μ
PD17071GB-012
9
1. PIN FUNCTION
Pin No.
Symbol
Pin Name
Description
I/O Form
1
MUTE
Mute output
Outputs a mute control signal.
Outputs a high level in the following cases:
When radio is turned ON/OFF
When the frequency band is changed
During manual tuning
During auto tuning
When the preset memory is called
In power-off state
CMOS
push-pull
output
2
3
BAND1
BAND2
Band select
signal output
These pins output band select signals.
The output of each band is as follows:
CMOS
push-pull
output
Pin
BAND1
BAND2
Selected band
AM
0
0
FM
1
0
TV (1 to 3 ch)
TV (4 to 12 ch)
1
1
(0: Low level, 1: High level)
4
|
9
KS1
|
KS6
Key source
output
Key source output pins of a key matrix
CMOS
push-pull
output
10
|
13
K0
|
K3
Key return signal
input
These pins input the key return signals of a key matrix. They are
connected to an internal pull-down resistor.
Input
14
KEYLOCK
Key lock signal
input
This pin inputs a key lock signal.
The signal input to this pin is used to lock or unlock a momentary key.
Input a signal to this pin as follows:
High level: To lock the momentary key.
All momentary keys are invalid while the keys are locked.
Low level: To unlock the keys.
Note, however, that a high level or low level of less than 32 ms is
invalid.
Input
15
STEREO
Stereo signal
input
This pin inputs a stereo signal.
Reception of stereo broadcasting is identified by the signal input to
this pin.
Input a low level to this pin while stereo broadcasting is being
received.
Input
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| UPD17071GB-012 | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH PLL FREQUENCY SYNTHESIZER CONTROLLER FOR PORTABLE FM/AM RADIO AND TV |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| UPD17071GB-012 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH PLL FREQUENCY SYNTHESIZER CONTROLLER FOR PORTABLE FM/AM RADIO AND TV |
| UPD17071GB-012-1A7 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH PLL FREQUENCY SYNTHESIZER CONTROLLER FOR PORTABLE FM/AM RADIO AND TV |
| UPD17072 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM |
| UPD17072GB | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM |
| UPD17072GB-XXX-1A7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
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