參數(shù)資料
型號: μPD789197
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(jī)微控制器(8位單片微控制器)
文件頁數(shù): 50/146頁
文件大?。?/td> 630K
代理商: ΜPD789197
Preliminary Product Information
50
μ
PD789186, 789187, 789196, 789197
(4) Port mode registers 2 and 3 (PM2 and PM3)
PM2 and PM3 specify whether each bit of port 2 and port 3 is used for input or output.
To use the P26/TO80 pin for timer output, the PM26 and P26 output latches must be reset to 0.
To use the P31/TO81/INTP1 pin for timer output, the PM31 and P31 output latches must be reset to 0.
To use the P33/INTP3/TO82/BZO90 pin for timer output, the PM33 and P33 output latches must be reset to 0.
PM2 and PM3 are manipulated using a 1-bit or 8-bit memory manipulation instruction.
A RESET input loads FFH into PM2 and PM3.
Figure 6-21. Port Mode Register 2 Format
PM26
0
1
P26 pin input/output mode selection
Output mode (output buffer ON)
Input mode (output buffer OFF)
1
PM26 PM25 PM24 PM23 PM22 PM21 PM20
PM2
7
6
5
4
Symbol
Address
When reset
R/W
FF22H
FFH
R/W
3
2
1
0
Figure 6-22. Port Mode Register 3 Format
PM31
0
1
P31 pin input/output mode selection
Output mode (output buffer ON)
Input mode (output buffer OFF)
1
1
1
1
PM33
PM32
PM31
PM30
PM3
7
6
5
4
Symbol
Address
When reset
R/W
FF23H
FFH
R/W
PM33
0
1
P33 pin input/output mode selection
Output mode (output buffer ON)
Input mode (output buffer OFF)
3
2
1
0
相關(guān)PDF資料
PDF描述
μPD789186 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789198 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789216Y 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789217Y 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
μPD789405 8 Bit Single Chip Microcontrollers(8位單片微控制器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PD78F0134 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134(A) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134(A1) 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134A 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers
PD78F0134A1 制造商:NEC 制造商全稱:NEC 功能描述:8-Bit Single-Chip Microcontrollers