參數(shù)資料
型號: UPD780024A
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): 16/90頁
文件大?。?/td> 660K
代理商: UPD780024A
μ
PD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A)
16
Data Sheet U16369EJ1V0DS
3.3 Pin I/O Circuits and Recommended Connection of Unused Pins
The input/output circuit type of each pin and recommended connection of unused pins are shown in Table 3-1.
For the input/output configuration of each type, refer to Figure 3-1 .
Table 3-1. Types of Pin I/O Circuits (1/2)
Pin Name
I/O Circuit Type
I/O
Recommended Connection of Unused Pins
P00/INTP0
8-C
I/O
Input: Independently connect to V
SS0
or V
SS1
via a
via a resistor.
Output: Leave open.
P01/INTP1
P02/INTP2
P03/INTP3/ADTRG
P10/ANI0 to P17/ANI7
25
Input
Directly connect to V
DD0
, V
DD1
, V
SS0
, or V
SS1
.
P20/SI30
8-C
I/O
Input: Independently connect to V
DD0
, V
DD1
, V
SS0
, or
V
SS1
via a resistor.
Output: Leave open.
P21/SO30
5-H
P22/SCK30
8-C
P23/RxD0
P24/TxD0
5-H
P25/ASCK0
8-C
P30, P31
13-P
Input: Directly connect to V
SS0
or V
SS1
.
Output: Leave open at low-level output.
P32/SDA0
Note 1
13-R
P33/SCL0
Note 1
P34/SI31
Note 2
8-C
Input: Independently connect to V
DD0
, V
DD1
, V
SS0
or
V
SS1
via a resistor.
Output: Leave open.
P35/SO31
Note 2
5-H
P36/SCK31
Note 2
8-C
P40/AD0 to P47/AD7
5-H
Input: Independently connect to V
DD0
or V
DD1
via a
resistor.
Output: Leave open.
P50/A8 to P57/A15
5-H
Input: Independently connect to V
DD0
, V
DD1
, V
SS0
, or
V
SS1
via a resistor.
Output: Leave open.
P64/RD
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
Notes 1.
SDA0 and SCL0 are incorporated only in the
μ
PD78F0034BY and 78F0034BY(A).
SI31, SO31, and SCK31 are incorporated only in the
μ
PD78F0034B and 78F0034B(A).
2.
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