參數(shù)資料
型號: MC68HC05L25PB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP52
封裝: TQFP-52
文件頁數(shù): 92/152頁
文件大小: 897K
代理商: MC68HC05L25PB
Interrupts
MC68HC05L25 Data Sheet, Rev. 3.1
44
Freescale Semiconductor
6.6.2 Interrupt Control Register
IRQE — External Interrupt (IRQ) Enable
The IRQE bit enables external interrupt when the interrupt mask is cleared and IRQF is set. This bit is
cleared at reset.
1 = IRQ enabled
0 = IRQ disabled
Bits 6–5 — Reserved
These bits are not used and always return to zero.
KWIE — KWI Enable
The KWIE bit enables key wakeup interrupt when the KWIF bit is set. The KWIEx bit in the KWIEN
register also must be set for enabling KWI. This bit is cleared at reset.
1 = KWI enabled
0 = KWI disabled
IRQS — External Interrupt (IRQ) Select Edge Sensitivity Only
The IRQS bit determines whether the LEVEL and EDGE or EDGE only will trigger the IRQ interrupt.
This bit is cleared at reset.
1 = Trigger only on negative EDGEs
0 = Trigger on low LEVEL and negative EDGEs
Bits 2–0 — Reserved
These bits are not used and always return to zero.
Address:
$0008
Bit 7
654321
Bit 0
Read:
IRQE
00
KWIE
IRQS
000
Write:
Reset:
00000000
= Unimplemented
Figure 6-2. Interrupt Control Register (INTCR)
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