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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)： | 70/98頁(yè) |
| 文件大?。?/td> | 467K |
| 代理商： | UPD178024GC-051-8BT |
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Data Sheet U14608EJ1V0DS00
70
μ
PD178024GC-051
8. ROTARY COMMANDER
(1) Input detection timing of rotary commander
Input to the rotary commander is detected as follows:
The RCMD1 (pin 18) and RCMD2 (pin 19) pins are tested every 2 ms two times to suppress chattering. After
chattering has been suppressed, the turn edges are detected as follows:
RCMD2
RCMD1
Right turn edge
Right turn edge
Left turn edge
Left turn edge
However, only the first turn edge of successive turn edges that are within 200 ms is valid.
(2) Function of rotary commander
The rotary commander functions in the same manner as the VOL UP key when it turns clockwise, and as the
VOL DOWN key when it turns counterclockwise. In either case, one turn edge operates the same as one
key input.
However, the operation cannot be repeated as is the case with holding down the VOL UP and
VOL DOWN keys.
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