參數資料
型號: UPD178024GC
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數: 72/98頁
文件大小: 467K
代理商: UPD178024GC
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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