參數(shù)資料
型號: MC68HC705CL48
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 1.802 MHz, MICROCONTROLLER, PQFP112
封裝: TQFP-112
文件頁數(shù): 77/145頁
文件大?。?/td> 673K
代理商: MC68HC705CL48
June 11, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05CL48
INTERRUPTS
MOTOROLA
REV 2.0
4-5
Figure 4-2. External Interrupts
IRQ pin
INTO bit
I bit (CCR)
External
Power-On Reset
External Reset
External Interrupt
DQ
CK
R
Being Serviced
Interrupt
Request
(read of vectors)
(a) Interrupt Functional Block Diagram
IRQ
IRQ1
IRQn
IRQ
(MCU)
tILIH
tILIL
tILIH
Edge-sensitive Trigger Condition
The minimum pulse width tILIH is one
The period tILIL should not be less than the
number of cycles it takes to execute the
interrupt service routine plus 21 cycles
Level-sensitive Trigger Condition
If after servicing an interrupt, the IRQ
Normally used with pull-up resistor for
remains low, then the next interrupt is
recognized.
Wire-Ore connected
(b) Interrupt Mode Diagram
internal bus period.
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