參數(shù)資料
型號: UPD784031YGK-BE9
廠商: NEC Corp.
英文描述: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16-/8-bit的單晶片微控制器
文件頁數(shù): 14/88頁
文件大小: 464K
代理商: UPD784031YGK-BE9
14
μ
PD784031Y
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 to P07
5-H
I/O
Input: Connect to V
DD0
.
P10/PWM0
P11/PWM1
Output: Open
P12/ASCK2/SCK2
8-C
P13/RxD2/SI2
5-H
P14/TxD2/SO2
P15 to P17
P20/NMI
2
Input
Connect to V
DD0
or V
SS0
.
P21/INTP0
P22/INTP1
2-C
Connect to V
DD0
.
P23/INTP2/CI
P24/INTP3
P25/INTP4/ASCK/SCK1
8-C
I/O
Input: Connect to V
DD0
.
Output: Open
P26/INTP5
2-C
Input
Connect to V
DD0
.
P27/SI0
P30/RxD/SI1
5-H
I/O
Input: Connect to V
DD0
.
P31/TxD/SO1
Output: Open
P32/SCK0/SCL
10-B
P33/SO0/SDA
P34/TO0 to P37/TO3
5-H
AD0 to AD7
A8 to A15
Output
Note
Open
P60/A16 to P63/A19
RD
WR
P66/WAIT/HLDRQ
I/O
Input: Connect to V
DD0
.
P67/REFRQ/HLDAK
Output: Open
P70/ANI0 to P77/ANI7
20-A
Input: Connect to V
DD0
or V
SS0
.
Output: Open
ANO0, ANO1
12
Output
Open
ASTB
4-B
Note
I/O circuit type of these pins is 5-H. However these pins perform only as output by an internal circuit.
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