參數(shù)資料
型號: μPD789417
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): 86/126頁
文件大小: 590K
代理商: ΜPD789417
86
μ
PD789415, 789416, 789417
(4) External interrupt mode register 1 (INTM1)
INTM1 is used to specify an effective edge for INTP3 and INTCMP.
INTM1 is set using an 8-bit memory manipulation instruction.
A RESET input clears INTM1 to 00H.
Figure 6-5. External Interrupt Mode Register 1 Format
ES61 ES60
0
0
0
0
ES31 ES30
INTM1
7
6
5
4
3
2
1
0
ES31
0
0
1
1
INTP3 effective edge selection
E30
0
1
0
1
Falling edge
Rising edge
Not to be specified
Both rising and falling edges
ES61
0
0
1
1
INTCMP effective edge selection
ES60
0
1
0
1
Falling edge
Rising edge
Not to be specified
Both rising and falling edges
Symbol
Address
When reset
R/W
FFEDH
00H
R/W
Cautions 1. Bits 2 to 5 must be fixed to 0.
2.
Before setting INTM1, 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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