參數(shù)資料
型號： MC68HCL05C8AB
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封裝： SHRINK, PLASTIC, DIP-42
文件頁數(shù)： 104/166頁
文件大?。?/td> 1914K
代理商： MC68HCL05C8AB
Interrupts
Technical Data
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A — Rev. 5.0
42
Interrupts
MOTOROLA
Unlike reset, hardware interrupts do not cause the current instruction
execution to be halted, but they are considered pending until the current
instruction is complete.
NOTE:
The current instruction is the one already fetched and being operated on.
When the current instruction is complete, the processor checks all
pending hardware interrupts. If interrupts are not masked (CCR I bit
clear) and if the corresponding interrupt enable bit is set, the processor
proceeds with interrupt processing; otherwise, the next instruction is
fetched and executed.
If both an external interrupt and a timer interrupt are pending at the end
of an instruction execution, the external interrupt is serviced first. The
SWI is executed the same as any other instruction, regardless of the I-
bit state.
Vector addresses for all interrupts, including reset, are listed in
Table 4-1. Vector Addresses for Interrupts and Reset
Register Flag Name
Interrupts
CPU Interrupt
Vector Address
N/A
Reset
RESET
$1FFE–$1FFF
N/A
Software
SWI
$1FFC–$1FFD
N/A
External interrupt
IRQ
$1FFA–$1FFB
TSR
ICF
Timer input capture
TIMER
$1FF8–$1FF9
TSR
OCF
Timer output compare
TIMER
$1FF8–$1FF9
TSR
TOF
Timer overflow
TIMER
$1FF8–$1FF9
SCSR
TDRE
Transmit buffer empty
SCI
$1FF6–$1FF7
SCSR
TC
Transmit complete
SCI
$1FF6–$1FF7
SCSR
RDRF
Receiver buffer full
SCI
$1FF6–$1FF7
SCSR
IDLE
Idle line detect
SCI
$1FF6–$1FF7
SCSR
OR
Overrun
SCI
$1FF6–$1FF7
SPSR
SPIF
Transfer complete
SPI
$1FF4–$1FF5
SPSR
MODF
Mode fault
SPI
$1FF4–$1FF5
相關(guān)PDF資料
PDF描述
MC68HSC05C8CFB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44
MC68HC05C8AMB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
MC68HSC05C8AB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP42
MC68HC05C8CFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05C8MFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
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