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| 型號： | UPD178024GF |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| 中文描述： | 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存 |
| 文件頁數(shù)： | 12/98頁 |
| 文件大?。?/td> | 467K |
| 代理商： | UPD178024GF |
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Data Sheet U14608EJ1V0DS00
12
μ
PD178024GC-051
Pin No.
Symbol
Pin Name
Description
I/O Type
This pin inputs a telephone mute signal.
Input a signal to this pin as follows:
PMUTE Pin
Telephone Mute
0
Telephone mute off
1
Telephone mute on
(0: Low level, 1: High level)
47
PMUTE
Telephone mute
signal input
Mute is on if telephone mute is on.
Input
This pin outputs a mute signal.
This pin outputs a signal as follows, depending on the mute status.
MUTE Pin
Mute
0
Mute on
1
Mute off
(0: Low level, 1: High level)
48
MUTE
Mute signal output
For the output timing of the mute signal, refer to “12. MUTE
OUTPUT TIMING CHART”.
CMOS
push-pull
output
49
DI1/
FL LED
Initialization switch
signal input/front
panel detachment
LED lighting signal
output
This is a bi-directional pin that inputs an initialization switch signal
and outputs a signal that lights an LED indicating that the front
panel is detached.
If the front panel is detached, this pin outputs square wave of 1 Hz
with a duty factor of 50%.
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
At all other times, this pin outputs a low level.
CMOS
push-pull
I/O
50
DI2/
CTRL_95
Initialization switch
signal input/loading
signal output
This is a bi-directional pin that inputs an initialization switch signal
and outputs a loading signal to the CD player (CDC-01KG).
It outputs a high level when a disc is loaded or ejected.
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
At all other times, this pin outputs a low level.
CMOS
push-pull
I/O
51
DI3/
TRAY FWD
Initialization switch
signal input/loading
forward signal
output
This is a bi-directional pin that inputs an initialization switch signal
and outputs a loading forward signal to the CD player (CDC-01KG).
It outputs a high level when a disc is loaded or ejected.
This pin functions as an input pin when the initialization switch is
read.
For the initialization switch, refer to “2. KEY MATRIX
CONFIGURATION”.
At all other times, this pin outputs a low level.
CMOS
push-pull
I/O
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