參數(shù)資料
型號: μPD70P3002
廠商: NEC Corp.
英文描述: 16/32 Single -Chip Microcontroller(16/32 位單片微控制器)
中文描述: 16/32單片機(16/32位單片微控制器)
文件頁數(shù): 12/56頁
文件大?。?/td> 367K
代理商: ΜPD70P3002
μ
PD70P3002
12
2.3 Pin I/O Circuits and Recommended Connections of Unused Pins
Table 2-1 shows the I/O circuit type of each pin in the normal operation mode, and the recommended
connections of the unused pins. Figure 2-1 shows a partially simplified diagram of each circuit.
In the PROM programming mode, connect the unused pins by referring to the diagram in
PIN CONFIGURATION
.
When connecting a pin to V
DD
or V
SS
via a resistor, use of a resistor of 3 to 10 k
is recommended.
Table 2-1. Types of Pin I/O Circuits and Recommended Connections of Unused Pins
Pin
I/O Circuit Type
Recommended Connections
P00/TO10, P01/TO11
5
Input
Output : Open
: Individually connect to V
DD
or V
SS
via resistor.
P02/TCLR1, P03/TI1
P04/INTP10 to P07/INTP13
8
P10 to P17
5
P20/NMI
2
Directly connect to V
SS
.
P21/INTP00 to P24/INTP03
8
Input
Output : Open
: Individually connect to V
DD
or V
SS
via resistor.
P25/SO2
5
P26/SI2, P27/SCK2
8
P30/SO0
5
P31/SI0, P32/SCK0
8
P33/TXD, P34/RXD, P35/SO1
5
P36/SI1, P37/SCK1
8
P40/AD0 to P47/AD7
5
P50/AD8 to P57/AD15
P60/A16 to P67/A23
P90/LBEN
P91/UBEN
P92/R/W
P93/DSTB
P94/ASTB
P95/ST0, P96/ST1
P97
P100/HLDAK
P101/HLDRQ
P102, P103
CLKOUT
3
Open
CKSEL
2
PLLSEL
2
WAIT
1
Directly connect to V
DD
.
MODE0, MODE1
2
RESET
IC0
Directly connect to V
SS
.
CV
DD
Directly connect to V
DD
.
CV
SS
Directly connect to V
SS
.
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