參數(shù)資料
型號: μPD789187
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位單片機微控制器(8位單片微控制器)
文件頁數(shù): 102/146頁
文件大?。?/td> 630K
代理商: ΜPD789187
Preliminary Product Information
102
μ
PD789186, 789187, 789196, 789197
(2) Interrupt mask flag registers (MK0 to MK2)
The interrupt mask flags are used to enable and disable the corresponding maskable interrupts.
MK0 to MK2 are manipulated using a 1-bit or 8-bit memory manipulation instruction.
A RESET input loads FFH into MK0 to MK2.
Figure 7-3. Interrupt Mask Flag Register Format
ADMK0
SMBOVMK0
SMBMK0
TMMK90
TMMK82TMMK81TMMK80
WTIMK
MK1
FFE5H
FFH
R/W
XXMKX
0
1
Interrupt handling control
Enable interrupt handling.
Disable interrupt handling.
1
1
1
1
1
1
EEMK0
LVIMK0
MK2
FFE6H
FFH
R/W
6
7
5
4
3
2
1
0
WTMK
STMK20
STMK20
PMK3 PMK2 PMK1 PMK0
TMMK4
MK0
Symbol
Address
When reset
R/W
FFE4H
FFH
R/W
6
7
5
4
3
2
1
0
6
7
5
4
3
2
1
0
Cautions 1. When the watchdog timer is being used in watchdog timer mode 1 or 2, any attempt to read
TMMK4 flag results in an undefined value being detected.
2. When port 3 is being used as an output port, and its output level is changed, an interrupt
request flag is set, because this port is also used as an external interrupt input. To use port
3 in output mode, therefore, the interrupt mask flag must be set to 1 in advance.
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