參數(shù)資料
型號(hào)： PD784054GCA2
廠商： NEC Corp.
英文描述： 16-BIT SINGLE-CHIP MICROCONTROLLER
中文描述： 16位單片機(jī)
文件頁數(shù)： 16/86頁
文件大小： 579K
代理商： PD784054GCA2
μ
PD784054(A)
16
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-P03
5-A
I/O
Input: Individually connect to V
DD
or V
SS
via resistor.
P10-P12
5
Output: Leave unconnected.
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
P27/INTP6
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,MODE1
1
Input
Directly connect to V
SS
.
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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