PD17012GF-055_15 Datasheet, PDF (28/84 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
Symbol
SEEKUP
(MANU.UP)
SEEKDOWN
(MANU.DOWN)
Description of Functions
Key
SEEKUP
SEEKDOWN
Description of Operations
• While seek up is in prgress, pressing the SEEKUP key, and
while seek down is in progress, pressing the SEEKDOWN key
stops the seek operation and retains the frequency at that time.
PSCAN
BAND
ASM
AUTO
SELECT
VOLUP
VOLDOWN
ATT/LOUD
TP/SK
RDS
• While seek up is in prgress, pressing the _SEEKDOWN key, and
while seek down is in progress, pressing the SEEKUP key
changes the operation. (e.g. Press the _SEEKUP key changes
to seek up.)
The seek operation is stopped.
The operation of the pressed key is performed.
The seek operation is continued.
The operation of the pressed key is performed.
• Upon reception of FM band
The seek operation is continued.
The operation of the pressed key is started.
• Upon reception of AM band
It becomes invalid.
The seek operation is continued.
Momentary keys other than the above have no effect.
(2) Manual seek operation
Pressing the key updates the frequency from the frequency when the key was pressed in the
upward direction ( SEEKUP key) or downward direction ( SEEKDOWN key) by 1 step.
Pressing and holding the key for more than 500 ms updates the frequency every 40 ms until
the key is released.
While receiving an RDS station, pressing the key clears PI code settings.
While a manual seek operation is in progress, pressing and holding the key renders all other
keys ineffective.
(3) Clock adjustment operation
While the clock is being displayed, pressing the key and the
DISP
adjusts the hour ( SEEKUP key) and minute ( SEEKDOWN key).
key together
<1> Adjusting the hour
Pressing the SEEKDOWN key once adds an hour; holding the key down for more than 0.5
seconds adds an hour every 200 ms. The hour adjustment operation affects neither the minute
digit nor count value.
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