参数资料
型号: S3P9664-SK
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, SOP-20
文件页数: 111/148页
文件大小: 784K
代理商: S3P9664-SK
INTERRUPT STRUCTURE
S3C9664/P9664 (Preliminary Spec)
5-2
INTERRUPT PENDING FUNCTION TYPES
When the interrupt service routine has executed, the application program's service routine must clear the
appropriate pending bit before the return from interrupt subroutine (IRET) occurs.
INTERRUPT PRIORITY
Because there is not a interrupt priority register in SAM87RI, the order of service is determined by a sequence of
source which is executed in interrupt service routine.
S
R
Q
Interrupt Pending
Register
Global Interrupt
Control (EI, Di instruction)
Vector
Interrupt
Cycle
Interrpt priority
is determind by
software polling
method
"EI" Instruction
Execution
RESET
Source
Interrupts
Source
Interrupt
Enable
Figure 5-2. Interrupt Function Diagram
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