參數(shù)資料
型號(hào): mPD789322
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁(yè)數(shù): 4/96頁(yè)
文件大?。?/td> 482K
代理商: MPD789322
Preliminary Product Information U14673EJ1V0PM00
12
PD789322,789324,789326,789327
3.3 Pin I/O Circuits and Recommended Connection of Unused Pins
The I/O circuit type of each pin and recommended connection of unused pins is shown in Table 3-1.
For the input/output circuit configuration of each type, refer to Figure 3-1.
Table 3-1. Types of Pin I/O Circuits and Recommended Connection of Unused Pins
Pin Name
I/O Circuit Type
I/O
Recommend Connection of Unused Pins
P00 to P03
P10, P11
5-A
P20/SCK10
8-A
P21/SO10
5-A
P22/SI10
P40/KR00 to P43/KR03
8-A
P60/TO40
5
Input:
Independently connect to VDD or VSS via a resistor.
Output: Leave open.
P61/INT
8
Input:
Independently connect to VSS via a resistor.
Output: Leave open.
P80/S22 to P85/S17
17-G
I/O
Input:
Independently connect to VDD or VSS via a resistor.
Output: Leave open.
S0 to S16, S23
17-D
COM0 to COM3
18-B
Output
VLC0
Leave open.
XT1
Input
Connect to VSS.
XT2
Leave open.
RESET
2
Input
IC0
Connect directly to VSS directly.
Figure 3-1. I/O Circuit Type (1/2)
Type 2
Type 5
Schmitt-triggered input with hysteresis characteristics.
IN
P-ch
IN/OUT
Data
Output
disable
Input
enable
VDD
N-ch
VSS
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