参数资料
型号: MC68HC05K3CP
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP16
封装: PLASTIC, DIP-16
文件页数: 75/132页
文件大小: 2612K
代理商: MC68HC05K3CP
Interrupts
Hardware Interrupts
MC68HC05K3 — Rev. 5
Technical Data
Interrupts
NOTE:
The BIH and BIL instructions apply only to the level on the IRQ pin itself
and not to the output of the logic OR gate with PA0–PA3 pins. The state
of the individual port A pins can be checked by reading the appropriate
port A pins as inputs.
NOTE:
If port A interrupts are enabled, the state of PA0–PA3 pins may cause
an IRQ interrupt regardless of whether these pins are configured as
4.6.4 Timer Interrupt (TIMER)
The timer interrupt is generated by the 8-bit timer when either a timer
overflow or a real-time interrupt has occurred, as described in
Section 8. 8-Bit Timer. The interrupt flags and enable bits for the timer
interrupts are in the timer status/control register (TSCR) located at
$0008. The I bit in the CCR must be clear for the timer interrupt to be
enabled. Either of these two interrupts vector to the same interrupt
service routine located at the address specified by the contents of
memory locations $03F8 and $03F9.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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ARCHIVED
BY
FREESCALE
SEMICONDUCT
OR,
INC.
2006
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