PD178016GC-051_15 Datasheet, PDF (13/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
Pin No. Symbol
29
FMIFC
Pin name
FM intermediate
frequency input
Description
Input pin for intermediate frequency (IF) in FM band.
To protect the built-in AC amplifier, use a capacitor to prevent the
flow of direct current.
When the FM SD/IF switch of the initial setting diode matrix is set
to 1 (the diode is jumpered), this pin is used to detect a station
during auto-tuning.
When the input frequency range and conditions listed below are
satisfied, the device judges that a station has been detected.
I/O type
Input
Band
FM
Input frequency range
10.7 MHz ± 25.0 kHz
A frequency within the input frequency range must be input within
20 ms of the PLL being locked. However, input the frequency
within 5 ms during AF operation, best station, or EON operation.
30
VDDPLL Positive power supply Positive power supply pin for PLL.
—
pin for PLL
Connect this pin to VDD.
31
FMOSC FM local oscillator Input pin for the FM band local oscillator output (VCO output).
Input
input
Tuning to FM band broadcasts causes this pin to become active.
Otherwise, the pin enters the high-impedance state.
To protect the built-in AC amplifier, use a capacitor to prevent the
flow of direct current before inputting the output.
32
AMOSC AM local oscillator Input pin for the local oscillator output (VCO output) in the AM
Input
input
(MW, LW) band.
Tuning to MW or LW band broadcasts causes this pin to become
active. Otherwise, the pin enters the high-impedance state.
To protect the built-in AC amplifier, use a capacitor to prevent the
flow of direct current before inputting the output.
33
GNDPLL PLL ground pin
Ground pin for PLL.
—
Connect this pin to GND.
Insert a 100-pF capacitor between the VDDPLL pin and GNDPLL pin.
34
EO0
35
EO1
Error output
Output pins for the PLL charge pump.
If a divided local oscillator frequency (VCO output) is greater than
the reference frequency, the outputs of these pins will go high. If
the divided local oscillator frequency is less than the reference
frequency, the outputs go low. If the divided local oscillator
frequency is equal to the reference frequency, the outputs enter the
floating state.
Input either of the outputs to a varactor diode via an external LPF
(Low Pass Filter).
CMOS
3-state
output
36
IC
Internally connected Connect this pin to GND.
—
37
LCD_DAT LCD driver data
Input/output pin for exchanging serial data with the LCD controller/ Input
signal input/output driver (µPD16431A).
CMOS
push-pull
output
11