參數(shù)資料
型號: μPD78F0034
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): 14/52頁
文件大?。?/td> 393K
代理商: ΜPD78F0034
μ
PD78F0034
14
Preliminary Data Sheet
2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Table 2-1 shows the types of pin I/O circuits and recommended connection of unused pins.
Refer to Figure 2-1 about the configuration of each type of I/O circuit.
Table 2-1. Pin I/O Circuit Type
Pin Name
Input/output circuit type
Input/output
Recommended connection of unused pins
P00/INTP0
8-C
Input
Independently connect to V
SS0
via a resistor.
P01/INTP1
P02/INTP2
P03/INTP3
P10/ANI0 to P17/ANI7
25
Input
Independently connect to V
DD0
or V
SS0
via a resistor.
P20/SI30
8-C
Input/output
P21/SO30
5-H
P22/SCK30
8-C
P23/RxD0
P24/TxD0
5-H
P25/ASCK0
8-C
P30, P31
13-P
Input/output
Independently connect to V
DD0
via a resistor.
P32, P33
13-R
P34
8-C
Independently connect to V
DD0
or V
SS0
via a resistor.
P35
5-H
P36
8-C
P40/AD0 to P47/AD7
5-H
Input/output
Independently connect to V
DD0
via a resistor.
P50/A8 to P57/A15
5-H
Input/output
Independently connect to V
DD0
or V
SS0
via a resistor.
P64/RD
Input/output
P65/WR
P66/WAIT
P67/ASTB
P70/TI00/TO0
8-C
P71/TI01
P72/TI50/TO50
P73/TI51/TO51
P74/PCL
5-H
P75/BUZ
RESET
2
Input
XT1
16
Connect to V
DD0
.
XT2
Leave open.
AV
DD
Connect to V
DD0
.
AV
REF
Connect to V
SS0
.
AV
SS
V
PP
Connect directly to V
SS0
or V
SS1
.
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