參數(shù)資料
型號: UPD780033AYCW
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位單晶片微控制器
文件頁數(shù): 14/70頁
文件大?。?/td> 527K
代理商: UPD780033AYCW
14
μ
PD780031AY, 780032AY, 780033AY, 780034AY
Data Sheet U14045EJ1V0DS00
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 circuit configuration of each type, see Figure 3-1.
Table 3-1. Types of Pin Input/Output Circuits
Pin Name
Input/Output
Circuit Type
I/O
Recommended Connection of Unused Pins
P00/INTP0 to P02/INTP2
8-C
Input
Independently connect to V
SS0
via a resistor.
P03/INTP3/ADTRG
P10/ANI0 to P17/ANI7
25
Input
Independently connect to V
DD0
or V
SS0
via a resistor.
P20/SI30
8-C
I/O
P21/SO30
5-H
P22/SCK30
8-C
P23/RxD0
P24/TxD0
5-H
P25/ASCK0
8-C
P30, P31
13-Q
I/O
Independently connect to V
DD0
via a resistor.
P32/SDA0
13-R
P33/SCL0
P34
8-C
Independently connect to V
DD0
or V
SS0
via a resistor.
P35
5-H
P36
8-C
P40/AD0 to P47/AD7
5-H
I/O
Independently connect to V
DD0
via a resistor.
P50/A8 to P57/A15
I/O
Independently connect to V
DD0
or V
SS0
via a resistor.
P64/RD
I/O
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
RESET
2
Input
XT1
16
Connect to V
DD0
.
XT2
Leave open.
AV
DD
Connect to V
DD0
.
AV
REF
Connect to V
SS0
.
AV
SS
IC
Connect directly to V
SS0
or V
SS1
.
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