PD17012GF-055_15 Datasheet, PDF (9/84 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
1. PIN FUNCTIONS
Pin No. Symbol
1
SK
Pin Name
SK signal input
2
DK
DK signal input
3
EO
Error out
4
VDD1
Power input
8
VDD2
5
AM
AM local oscillation
input
6
FM
FM local oscillation
input
7
CE
Chip enable
Description
I/O Format
This input pin detects the SK signal (traffic information
broadcasting station identification) of a VF broadcasting
station. It is output at low level.
If VF broadcasting stations are not in use, please pull it up.
Input
This input pin detects the DK signal (traffic information
on-air identification) of a VF broadcasting station. It is output
at low level.
If VF broadcasting stations are not in use, pull it up.
Input
This refers to the output from the charge pump of the PLL
frequency synthesizer. If the value which has divided the
local oscillator frequency is higher than the reference
frequency, high level is output from these pins. If the value
is lower, low level is output. If the value is the same as the
reference frequency, it results in floating.
This is the pin for positive power. It supplies the 5 V ±10%
voltage when running the CPU and peripheral devices.
It is possible to retain data at 2.2 V when the clock has
stopped.
When VDD is started up, the device is reset by the built-in
power-ON reset circuit.
Avoid applying a voltage higher than VDD to any pins other
than VDD (VDD1, VDD2). Be careful about this especially when
simultaneously starting up the VDD and CE pins, because
application of a higher voltage may cause latch-up.
Ensure that the VDD1 pin and the VDD2 pin are connected to
the same electric potential.
CMOS
3-state
output
—
This pin is for inputting the local oscillation output (VCO
output) of the AM (MW, LW) band.
When the MW or LW band is received, the pin becomes
active; in other cases, it is internally pulled down.
The inputtable frequency range is 0.5 to 30 MHz (0.3 Vp-p).
Since the pin connects to a built-in AC amplifier, please
use a capacitor to cut out the DC portion before inputting.
Input
This pin is for inputting the local oscillation output (VCO
output) of the FM band.
When the FM band is received, the pin becomes active; in
other cases, it is internally pulled down.
The inputtable frequency range is 9 to 150 MHz (0.3 Vp-p).
Since the pin connects to a built-in AC amplifier, please use
a capacitor to cut out the DC portion before inputting.
This is the device selection signal input pin.
To make a device perform usual operations (such as radio,
tape, CD, clock), high level is input. At low level, this pin is
placed in the backup state, with the radio, tape, and CD
turned OFF.
It is possible to place this pin in the backup state with low
current consumption by turning off the clock display
(initialize diode NOCLK = 1).
Input
Input
7