PD17012GF-055_15 Datasheet, PDF (51/84 Pages) Renesas Technology Corp – SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR CAR-MOUNTED FM/MW/LW RADIO

µPD17012GF-055
6.1.5 Manual up/down
The operation is started by pressing SEEKUP / SEEKDOWN when the device is in TUNER mode and in
SHIFT mode.
The timing chart below shows the manual operation.
Figure 6-5. Timing Chart in Manual Operation (1/2)
(with key released within 0.5 second)
MUTE
1
2
40 ms
490-500 ms
4
290-300 ms
Key ON
Key OFF
Figure 6-5. Timing Chart in Manual Operation (2/2)
(with key kept pressed for 0.5 second or longer)
MUTE
1
2
40 ms
490-500 ms
Key ON
2
3
2
3
40 ms
40 ms
4
290-300 ms
Key OFF
determined
1 MUTE first-out and beep output
2 Frequency division ratio setting
3 Key repeat time (500 ms for both AM and FM when the band edge has been detected.)
4 MUTE last-out output (490-500 ms in band edge detection)
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