PD17012GF-055_15 Datasheet, PDF(59/84 Page) Renesas Technology Corp – SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR CAR-MOUNTED FM/MW/LW RADIO

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PD17012GF-055_15 Datasheet, PDF (59/84 Pages) Renesas Technology Corp – SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR CAR-MOUNTED FM/MW/LW RADIO

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ÂµPD17012GF-055

6.5 Power Control

6.5.1 TIMING of POWER ON â OFF transitions by POWER key

Note

POWER key

PWRIN

OFF

MUTE output

490-500 ms

Internal power state

OFF

Power mode

state output

1 The power-off port state is set, the tuner is turned off, and serial communication is broken. But if the

initialize diode CLKDSP = 1 (short-circuited with diode), the operations of breaking serial communication

and turning off the LCD power output are not implemented.

2 If initialize diode CLKDSP = 0 (open), the LCD power output is turned on with the same timing.

3 Tuner is turned on, sound source mode is started, serial communication is started and call back for the

last preset memory is started (If the sound source is the tuner, mute on remains.)

4 Call for last preset memory is completed.

Note Timing for detecting key and panel changes (time to eliminate chattering is not included).

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