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參數(shù)資料
| 型號： | UPD17071GB-012 |
| 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)： | 36/48頁 |
| 文件大小： | 296K |
| 代理商： | UPD17071GB-012 |
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μ
PD17071GB-012
36
4. MUTE OUTPUT TIMING CHART
This section describes the timing of the mute output.
<1> through <7> in the timing charts indicate the time required for the respective processing, as follows:
<1> Key ON chattering wait time
<2> Mute leading time
<3> Division ratio setting and display contents updating time
<4> Mute trailing time
<5> Scan time
<6> PLL lock wait time
<7> Key OFF chattering wait time
4.1 Manual up/down (operates by pressing key and releasing within 0.5 sec)
Time of <4> is 625 to 750 ms at the band edge.
4.2 Auto up/down (operates by holding down key for 0.5 sec or longer)
Scan time of <5> is as follows depending the received band.
FM: 40 to 48 ms
AM: 24 to 32 ms
TV: 496 to 504 ms
Time of <5> is 500 ms, and time of <4> is 625 to 750 ms at the band edge.
Less than
0.5 sec
< 1 >
48–64 ms
< 7 >
48–64 ms
< 2 >
40–48 ms
< 3 >
8–16 ms
< 4 >
250–375 ms
Key OFF
Key ON
MUTE
< 1 >
48–64 ms
0.5 sec
< 2 >
40–48 ms
< 3 >
8–16 ms
< 5 >
250–375 ms
SD, IF
Without check station
Key ON
MUTE
< 6 >
< 3 >
8–16 ms
< 6 >
< 4 >
SD, IF
With check station
< 3 >
8–16 ms
< 5 >
< 6 >
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| UPD17071GB-012-1A7 | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH PLL FREQUENCY SYNTHESIZER CONTROLLER FOR PORTABLE FM/AM RADIO AND TV |
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| 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 |
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