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PDF UPD178024GC-051-8BT Data sheet ( Hoja de datos )
| Número de pieza | UPD178024GC-051-8BT | |
| Descripción | 8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER/ PLL FREQUENCY SYNTHESIZER/ AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD178024GC-051
8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP
PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER
FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER
The µPD178024GC-051 is an 8-bit CMOS microcontroller for use in digital tuners designed to receive the
European and USA FM, MW, and LW bands. It incorporates a prescaler, PLL frequency synthesizer, and IF counter.
The device has various CD player control functions and enables the configuration of a high-performance, multi-
function FM/MW/LW tuner with CD player, such as an automotive stereo system, using a single chip.
FEATURES
• Preset memory
Stores six stations in each of the FM1, FM2, FM3,
AM1 (shared by MW), and AM2 (shared between
MW and LW) bands, giving a total of 30 stations
• Last channel memory
One station per band, totaling 5 stations
• Tuning functions
• Manual seek/auto-seek
• Auto-storage
• Preset scan
• Auto-retuning
• LCD controller/driver (µPD16431A)
• Single power supply (VDD = 5 V ±10%)
• CD player control functions
• 8 cm/12 cm disc detection
• Track repeat
• Intro playback
• Random play
• Program playback
(with CD player (CDC-01KG) connected)
• Electronic volume control (TDA7313)
• Equalizer function (TA2078P)
• Remote-controller signal reception function
(µPD6121G is used for sending the remote-
controller signal)
• Rotary commander
• Front panel control
ORDERING INFORMATION
Part Number
µPD178024GC-051-8BT
Package
80-pin plastic QFP (14 × 14 mm, 0.65 mm pitch)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U14608EJ1V0DS00 (1st edition)
Date Published January 2000 N CP(K)
Printed in Japan
©
2000
1 page  
µPD178024GC-051
1. PIN FUNCTIONS
Pin No. Symbol
1 LOAD SW
Pin Name
Disc insertion
detection signal
2 CD8_12
8 cm/12 cm disc
detection signal
3 SW8CM
12 cm disc
detection signal
4 TRAY SW
Chucking signal
input
Description
I/O Type
This pin inputs the disc insertion detection signal from the CD player
(CDC-01KG).
Pull up this pin externally.
Input a signal to this pin as follows:
Input
Pin Description
0 Detects insertion of a disc.
1 Does not detect insertion of a disc.
(0: Low level, 1: High level)
This pin inputs the 8 cm/12 cm disc detection signal from the CD
player (CDC-01KG).
Pull up this pin externally.
Input a signal to this pin as follows:
Input
Pin Description
0 Detects an 8 cm/12 cm disc.
1 Does not detect an 8 cm/12 cm disc.
(0: Low level, 1: High level)
This pin inputs the 12 cm disc detection signal from the CD player
(CDC-01KG).
Pull up this pin externally.
Input a signal to this pin as follows:
Input
Pin Description
0 Detects a 12 cm disc.
1 Does not detect a 12 cm disc.
(0: Low level, 1: High level)
This pin inputs the chucking signal from the CD player (CDC-01KG).
Pull up this pin externally.
Input a signal to this pin as follows:
Input
TRAY SW Pin
Description
0 Tray opens.
1 Tray closes (chucking status).
(0: Low level, 1: High level)
Data Sheet U14608EJ1V0DS00
5
5 Page 
µPD178024GC-051
Pin No. Symbol
40 SRS
41 EQ MODE1
42 EQ MODE2
43 EVOL DA
44 EVOL CL
45 POW1
46 POW2
Pin Name
SRS signal output
Equalizer mode
signal output
Electronic volume
data signal output
Electronic volume
clock signal output
Power signal
output
Description
I/O Type
This pin outputs an SRS signal.
This pin outputs a signal as follows in the power-on status,
depending on the SRS status.
CMOS
push-pull
output
SRS Pin
SRS Status
0 SRS off
1 SRS on
(0: Low level, 1: High level)
At all other times, it outputs a low level.
These pins output an equalizer mode signal.
If it is specified by the initialization switch “EQICSEL” that an
equalizer IC is used, these pins output a signal as follows in the
power-on status, depending on the equalizer mode.
CMOS
push-pull
output
EQ MODE1
Pin
EQ MODE2
Pin
Equalizer Mode
0 0 FLAT
1 0 ROCK
0 1 CLASSIC
1 1 POP
(0: Low level, 1: High level)
At all other times, both the “EQ MODE1” and “EQ MODE2” pins
output a low level.
This pin outputs a serial data signal (IIC bus format) to an
electronic volume IC (TDA7313).
Connect this pin to the SDA pin (pin 27) of the electronic volume
IC (TDA7313) and externally pull up the connection line between
the pins.
In the power-off status, stop the pull-up power supply.
This pin outputs data at the falling edge of the EVOL CL pin.
In the power-off status and in the standby mode, it outputs a low
level.
CMOS
push-pull
output
This pin outputs a serial clock signal (IIC bus format) to an
electronic volume IC (TDA7313).
Connect this pin to the SCL pin (pin 28) of the electronic volume IC
(TDA7313) and externally pull up the connection line between the
pins.
In the power-off status, stop the pull-up power supply.
In the power-off status and in the standby mode, this pin outputs a
low level.
CMOS
push-pull
output
These pins output a power signal to the peripheral circuit.
Both the POW1 and POW2 pins output a low level in the power-on
status, and a high level in the power-off status.
For the output timing of the power signal, refer to “12. MUTE
OUTPUT TIMING CHART”.
CMOS
push-pull
output
Data Sheet U14608EJ1V0DS00
11
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