參數(shù)資料
型號(hào): μPD78F9026
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機(jī)微控制器
文件頁(yè)數(shù): 11/48頁(yè)
文件大?。?/td> 248K
代理商: ΜPD78F9026
Preliminary Data Sheet
11
PD78F9026
4.3
Pin Input/Output Circuits and Connection of Unused Pins
Types of input/output circuits and recommended connection of unused pins are shown in Table 4-1.
For the configuration of each type of input/output circuit, see
Figure 4-1
.
Table 4-1. Type of Input/Output Circuit of Each Pin
Pin Name
I/O Circuit Type
Input/Output
Recommended Connection for Unused Pins
P00-P07
5-P
Input/output
Independently connect to V
DD
or V
SS
via resistor.
P10-P17
P20/ASCK/
SCK0
8-E
P21/TxD/SO0
5-P
P22/RxD/SI0
8-E
P30/INTP0
Independently connect to V
SS
via resistor.
P31/INTP1
P32/INTP2/CPT2
P40/KR0-P47/KR7
Independently connect to V
DD
or V
SS
via resistor.
P50/TI0/TO0
Independently connect to V
SS
via resistor.
P51/TO2
5-p
P52, P53
Independently connect to V
DD
or V
SS
via resistor.
RESET
2
Input
-
NC
-
-
Connect directly to V
SS
.
V
PP
Note
Note
When writing is performed on the target board, V
SS
should be selectable with a switch even when high
voltage (approx. 10 V) is applied to the V
PP
pin.
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