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參數(shù)資料
| 型號： | μPD78F4046 |
| 廠商： | NEC Corp. |
| 英文描述： | 8 Bit Single Chip Microcontrollers(8位單片微控制器) |
| 中文描述： | 8位單片機微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 14/26頁 |
| 文件大小： | 159K |
| 代理商： | ΜPD78F4046 |
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PD78F4046
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5.3 I/O Circuits of Pins and Processing of Unused Pins
Table 5-1 shows the I/O circuit type of each pin and recommended processing of the unused pins.
For the I/O circuit type, refer to
Figure 5-1
.
Table 5-1. I/O Circuit Type of Each Pin and Recommended Processing of Unused Pins
Pin Name
I/O Circuit Type
I/O
Recommended Connection of Unused Pins
P00/RTP0-P03/RTP3
5-A
I/O
Input: Individually connect to V
DD
or V
SS
via resistor.
P10-P12
5
Output: Leave unconnected.
P11/TO21
P12/TO30
P13/TO31
P20/NMI
2
Input
Connect to V
SS
.
P21/INTP0/TO00
8
I/O
Input: Individually connect to V
DD
or V
SS
via resistor.
P22/INTP1/TO01
Output: Leave unconnected.
P23/INTP2/TO02
P24/INTP3/TO03
P25/INTP4
P26/INTP5/TI2
P27/INTP6/TI3
P30/TO10
5
P31/TO11
P32/RxD/SI1
P33/TxD/SO1
P34/ASCK/SCK1
8
P35/RxD2/SI2
5
P36/TxD2/SO2
P37/ASCK2/SCK2
8
P40/AD0-P47/AD7
5-A
P50/AD8-P57/AD15
P60/A16-P63/A19
P70/ANI0-P77/ANI7
9
Input
Connect to V
SS
.
P80/ANI8-P87/ANI15
P90/RD
5-A
I/O
Input: Individually connect to V
DD
or V
SS
via resistor.
P91/LWR
Output: Leave unconnected.
P92/HWR
P93/ASTB
P94/WAIT
MODE
1
Input
–
RESET
2
CLKOUT
3
Output
Leave unconnected.
AV
REF
–
–
Connect to V
SS
.
AV
SS
AV
DD
Connect to V
DD
.
Remark
The circuit type numbers are serial in the 78K series but are not always so with some models (because
some models are not provided with particular circuits).
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