參數(shù)資料
型號: μPD789198
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): 103/146頁
文件大?。?/td> 630K
代理商: ΜPD789198
Preliminary Product Information
103
μ
PD789186, 789187, 789196, 789197
(3) External interrupt mode register 0 (INTM0)
INTM0 is used to specify an effective edge for INTP0 to INTP2.
INTM0 is manipulated using an 8-bit memory manipulation instruction.
A RESET input clears INTM0 to 00H.
Figure 7-4. External Interrupt Mode Register 0 Format
ES21 ES20 ES11 ES10 ES01 ES00
0
0
INTM0
7
6
5
4
3
2
1
0
ES11
0
0
1
1
INTP1 effective edge selection
ES10
0
1
0
1
Falling edge
Rising edge
Not to be specified
Both rising and falling edges
ES21
0
0
1
1
INTP2 effective edge selection
ES20
0
1
0
1
Falling edge
Rising edge
Not to be specified
Both rising and falling edges
ES01
0
0
1
1
INTP0 effective edge selection
ES00
0
1
0
1
Falling edge
Rising edge
Not to be specified
Both rising and falling edges
Symbol
Address
When reset
R/W
FFECH
00H
R/W
Cautions 1. Bits 0 and 1 must be fixed to 0.
2. Before setting INTM0, set the corresponding interrupt mask flag register to 1 to disable
interrupts.
To enable interrupts, clear (0) the corresponding interrupt request flag, then the
corresponding interrupt mask flag register.
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