參數(shù)資料
型號： UPD178024GC-051
廠商： NEC Corp.
元件分類： 通用總線功能
英文描述： 8-BIT SINGLE-CHIP MICROCONTROLLER WITH ON-CHIP PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO WITH CD PLAYER
中文描述： 8位單片機(jī)具有片上標(biāo)器，鎖相環(huán)頻率合成器，如柜臺，汽車調(diào)頻/中波/龍運收音機(jī)帶CD播放器
文件頁數(shù)： 11/98頁
文件大?。?/td> 467K
代理商： UPD178024GC-051
Data Sheet U14608EJ1V0DS00
11
μ
PD178024GC-051
Pin No.
Symbol
Pin Name
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.
SRS Pin
SRS Status
0
SRS off
1
SRS on
(0: Low level, 1: High level)
40
SRS
SRS signal output
At all other times, it outputs a low level.
CMOS
push-pull
output
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.
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)
41
42
EQ MODE1
EQ MODE2
Equalizer mode
signal output
At all other times, both the “EQ MODE1” and “EQ MODE2” pins
output a low level.
CMOS
push-pull
output
43
EVOL DA
Electronic volume
data signal output
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
44
EVOL CL
Electronic volume
clock signal 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
45
46
POW1
POW2
Power signal
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
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