upd178016 Renesas Electronics Corporation., upd178016 Datasheet - Page 13

• Manufacturer Part Number: upd178016
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Pin No.
49
52
53
58
59
60
61
62
63
64
65
to
to
D3
to
D0
DS0
to
DS5
BEEP
POWOUT
MODE0
MODE1
RDS
DK
SK
Symbol
Initial setting diode
return signal input
Initial setting diode
source signal output
Beep signal output
Power state output
Mode signal output
RDS indicator signal
input
DK signal input
SK signal input
Pin name
Input pins for the return signals of the initial setting diode matrix.
These pins, together with DS0 (pin 53) to DS5 (pin 58), constitute
a diode matrix.
Connect a pull-down resistor to these pins.
Output pins for the source signals of the initial setting diode matrix.
These pins, together with D3 (pin 49) to D0 (pin 52), constitute a
diode matrix.
Beep output pin.
A square wave with a frequency of 1.5 kHz and a duty cycle of 50
% is output for 50 ms.
A beep is output when:
• The beep is validated by pressing a key.
• The next preset memory is selected during preset memory scan
Output pin indicating the power state of the system.
Output pins indicating the operating mode.
See the table below.
Radio output mode is set when the power is first applied.
Input pin used to detect the RDS signal of an RDS station.
Prevents the device from erroneously locking onto a non-RDS
station.
The RDS data, read when the pin is at the low level, is valid.
Pull down this pin if synchronization is to be performed using only
RDSDATA and RDSCLK during auto-tuning.
Input pin used to detect the DK signal of a VF station.
If both the SK and DK pins go low in standby mode, the device
judges that traffic information is being broadcast and the device
switches to standby radio mode.
If the level of the DK pin goes from low to high, the device returns
to standby mode. Pull up this pin when ARI is not to be used.
Input pin used to detect the SK signal of a VF station.
The input is used as the auto-tuning stop signal.
When a station is detected, if the input goes low within about 500
ms, the device judges that a traffic information station has been
detected, and auto-tuning is stopped.
Pull up this pin when ARI is not used.
operation.
MODE0
0
1
1
MODE1
0
0
1
Radio
Tape
CD
Description
Mode
(0: Low, 1: High)
PD178016GC-051
push-pull
output
CMOS
push-pull
output
Input
Input
output
CMOS
push-pull
output
CMOS
Input
I/O type
Input
CMOS
push-pull
13