PD17012GF-055_15 Datasheet, PDF (4/84 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
FUNCTION OVERVIEW
Receive Frequency, Channel Space, Reference Frequency, Intermediate Frequency
Item
Band
FM
Receive
Frequency
87.50 – 108.00 MHz
MW
522 – 1620 kHz
Channel
Space
50 kHz
9 kHz
LW
144 – 281 kHz
1 kHz
Reference
Frequency
50 kHz
9 kHz
1 kHz
Intermediate
Frequency
10.7 MHz
450 kHz
459 kHz
10.71 MHz
450 kHz
459 kHz
10.71 MHz
Channel Selection Function
(1) Manual tuning
Type
Manual up /
Manual down
Description
Pressing the key once moves the frequency up/down by a step.
Keeping the key pressed for over 0.5 second will result in fast
forward.
(2) Auto tuning
Type
Seek up /
Seek down
Description
Searches for broadcasting stations in up/down directions. If a station is
detected, the frequency of the station is retained.
In RDS mode, only RDS broadcasting stations are searched for.
In TP/SK mode, only traffic information stations are searched for.
(3) Preset memory
Data on 6 broadcasting stations can be stored for each of the bands (FM1, FM2, AM), totaling 24
stations.
(4) Auto store memory
Broadcasting stations are searched for starting from the lowest frequency. Detected stations are written
in preset memory starting from the highest SD level. Afterwards, they are sorted in order of the
frequency.
(5) Last channel memory
Equipped with last channel memory independently for each of the FM1, FM2, and AM bands.
(6) Auto retuning
If no SD signal can be detected for about 20 seconds or longer during reception of a broadcasting station,
auto retuning is started automatically.
(7) TP/SK auto retuning
If no SD or TP/SK signal is detected for 30 seconds or longer in TP/SK mode during reception of a
broadcasting station, auto retuning to detect TP/SK stations is started automatically.
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