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參數(shù)資料
| 型號： | UPD17071GB-012-1A7 |
| 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)： | 22/48頁 |
| 文件大?。?/td> | 296K |
| 代理商： | UPD17071GB-012-1A7 |
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μ
PD17071GB-012
22
Momentary Key
Function Description
This key is used to select a band.
It is valid when the radio is ON.
Each time the
If Japan is selected as destination region and if initialization diode switch TV_ENA = 1
key has been pressed, the band is changed as follows:
Other than above
This key is used to test lighting of the LCD before shipment.
By pressing the
key, all the segments of the LCD lights for 20 seconds.
If the
key is pressed again while the LCD is lit, the test is stopped.
Any key other than the
key is invalid during the testing of LCD lighting.
CHECK
–
These keys are used to call a preset station and to write data to the preset memories.
They are valid when the radio is ON and initialization diode switch MEMSEL = 0.
(1) Calling preset memory
By pressing any of the
called.
A preset memory number is indicated for 0.5 second, and the corresponding frequency is selected.
Ten preset memories, M1 through M10, each corresponding to a preset station, are available.
To call preset memories M6 through M10, or to write data to these preset memories, refer to the
description of the
Key.
+5
through
keys, the corresponding preset station can be
(2) Writing preset memory
The contents of a specified preset memory are written when one of the keys
is pressed in combination with the
For how to write data to the preset memory, refer to the description of the
to
key.
key.
When initialization diode switch MEMSEL = 1, the
key functions as the
Key.
This key is for writing data to the preset memory and for auto store memory.
It is valid when the radio is ON.
When initialization diode switch MEMSEL = 0
For writing preset memory
When initialization diode switch MEMSEL = 1
For writing preset memory and auto store memory
The operation is as follows when initialization diode switch MEMSEL = 1.
key is held down for:
Operation
Less than 2 seconds
Preset memory write
2 seconds or longer
Auto store memory
BAND
BAND
CHECK
CHECK
CHECK
MEMORY UP
M1
M5
M1
M5
M1
M5
MEMORY
MEMORY
M1
MEMORY
MEMORY
FM
AM
TV
(On initial power application)
FM
AM
(On initial power application)
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