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參數(shù)資料
| 型號(hào)： | UPD178024GC-051-8BT |
| 廠商： | NEC Corp. |
| 元件分類(lèi)： | 通用總線功能 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER |
| 中文描述： | 8位單片機(jī)具有片上標(biāo)器，鎖相環(huán)頻率合成器，如柜臺(tái)，汽車(chē)調(diào)頻/中波/龍運(yùn)收音機(jī)帶CD播放器 |
| 文件頁(yè)數(shù)： | 72/98頁(yè) |
| 文件大?。?/td> | 467K |
| 代理商： | UPD178024GC-051-8BT |
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Data Sheet U14608EJ1V0DS00
72
μ
PD178024GC-051
9.2
Opening/Closing Front Panel
The FL PANEL pin (pin 73) detects the opening or closing of the front panel, which and enables or disables the
ejection of the disc.
(1) Timing of detecting opening/closing of front panel
The FL PANEL pin (pin 73) is judged every 10 ms. If it is high five times in a row, it is assumed that the front
panel is open.
If the pin is low five times in a row, it is assumed that the front panel is closed.
If the pin is not high or low five times in a row, the previous status of the front panel is retained.
FL PANEL
Internal panel
condition
Low level
High level
Open
Closed
Detection of open panel
Detection of closed panel
FL PANEL pin judgment timing
10 ms
(2) Operation based on open/closed front panel
When the front panel is closed, the disc cannot be ejected.
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