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參數(shù)資料
| 型號： | UPD178023 |
| 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)： | 13/56頁 |
| 文件大?。?/td> | 261K |
| 代理商： | UPD178023 |
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13
μ
PD178023, 178024
Data Sheet U14126EJ1V0DS00
1.3 I/O Circuits of Pins and Recommended Connections of Unused Pins
Table 1-1 shows the types of the I/O circuits of the respective pins and the recommended connections of the pins
when they are not used. For the configuration of the I/O circuit of each pin, refer to Figure 1-1.
Table 1-1. I/O Circuit Type of Each Pin
Pin Name
I/O Circuit Type
I/O
Recommended Connection of Unused Pin
P00/INTP0-P04/INTP4
8
I/O
Set these pins in general-purpose input mode in software, and connect
each of them to V
DD
, V
DD
PORT, GND, or GNDPORT via resistor.
P05, P06
P10/ANI0-P15/ANI5
25
Input
Connect each of them to V
DD
, V
DD
PORT, GND, or GNDPORT via resistor.
P30-P32
5
I/O
Set these pins in general-purpose input mode in software, and output
low-level signal. Leave unconnected.
P33/TI50
5-K
P34/TI51
P35
5
P36/BEEP0
P37
P40-P47
5-A
Set these pins in general-purpose input mode in software, and connect each
of them to GND or GNDPORT via resistor.
P50-P57
5
Set these pins in general-purpose input mode in software, and connect each
of them to V
DD
, V
DD
PORT, GND, or GNDPORT via resistor.
P60-P67
5
Set these pins in general-purpose input mode in software, and output
low-level signal. Leave unconnected.
P70/SI3
5-K
Set these pins in general-purpose input mode in software, and connect each
of them to V
DD
, V
DD
PORT, GND, or GNDPORT via resistor.
P71/SO3
5
P72/SCK3
5-K
P73
5
P74/RXD0
5-K
P75/TXD0
5
P76/SDA0
10-D
P77/SCL0
P120-P125
5
P130/TO50
19
Output
Set these pins to low-level output in software and leave unconnected.
P131/TO51
P132
EO0, EO1
DTS-EO1
Output
Leave unconnected.
VCOL, VCOH
DTS-AMP
Input
Disable PLL in software and select pull-down.
AMIFC, FMIFC
Set these pins in general-purpose input port mode in software and connect
each of them to V
DD
, V
DD
PORT, GND, or GNDPORT via resistor.
REGOSC, REGCPU
–
–
Connect these pins to GND via 0.1-
μ
F capacitor.
RESET
2
Input
–
V
DD
PLL
–
–
Connect this pin to V
DD
.
GNDPLL
Directly connect these pins to GND or GNDPORT.
IC
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