參數(shù)資料
型號(hào): μPD784031Y
廠商: NEC Corp.
英文描述: 8/16 Bit Single Chip Microcontrollers(8/16 位微控制器)
中文描述: 8 / 16位單片機(jī)微控制器(8 / 16位微控制器)
文件頁(yè)數(shù): 14/66頁(yè)
文件大?。?/td> 392K
代理商: ΜPD784031Y
μ
PD784031Y
14
5.3 Types of Pin I/O Circuits and Connections for Unused Pins
Table 5-1 shows types of pin I/O circuits and the connections for unused pins.
For the input/output circuit of each type, refer to Figure 5-1.
Table 5-1. Types of Pin I/O Circuits and Connections for Unused Pins (1/2)
Pin Name
I/O Circuit Type
I/O
Recommended Connection for Unused Pins
P00-P07
5-A
I/O
Input: Connect to V
DD
P10/PWM0
P11/PWM1
Output: Open
P12/ASCK2/SCK2
8-A
P13/RxD2/SI2
5-A
P14/TxD2/SO2
P15-P17
P20/NMI
2
Input
Connect to V
DD
or V
SS
.
P21/INTP0
P22/INTP1
2-A
Connect to V
DD
.
P23/INTP2/CI
P24/INTP3
P25/INTP4/ASCK/SCK1 8-A
I/O
Input: Connect to V
DD
Output: Open
P26/INTP5
2-A
Input
Connect to V
DD
.
P27/SI0
P30/RxD/SI1
5-A
I/O
Input: Connect to V
DD
.
P31/TxD/SO1
Output: Open
P32/SCK0/SCL
10-A
P33/SO0/SDA
P34/TO0-P37/TO3
5-A
AD0-AD7
A8-A15
Output
Note
Open
P60/A16-P63/A19
RD
WR
P66/WAIT/HLDRQ
I/O
Input: Connect to V
DD
P67/REFRQ/HLDAK
Output: Open
P70/ANI0-P77/ANI7
20
Input: Connect to V
DD
or V
SS
.
Output: Open
ANO0, ANO1
12
Output
Open
ASTB
4
Note
I/O circuit type of these pins is 5-A. However these pins perform only as output by an internal circuit.
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