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参数资料
| 型号： | MR80C32E-25SHXXX |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 25 MHz, MICROCONTROLLER, CQCC44 |
| 封装： | LCC-44 |
| 文件页数： | 8/28页 |
| 文件大小： | 6193K |
| 代理商： | MR80C32E-25SHXXX |
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16
2467X–AVR–06/11
ATmega128
When using the SEI instruction to enable interrupts, the instruction following SEI will be exe-
cuted before any pending interrupts, as shown in this example.
Interrupt Response
Time
The interrupt execution response for all the enabled AVR interrupts is four clock cycles mini-
mum. After four clock cycles, the program vector address for the actual interrupt handling routine
is executed. During this 4-clock cycle period, the Program Counter is pushed onto the Stack.
The vector is normally a jump to the interrupt routine, and this jump takes three clock cycles. If
an interrupt occurs during execution of a multi-cycle instruction, this instruction is completed
before the interrupt is served. If an interrupt occurs when the MCU is in Sleep mode, the inter-
rupt execution response time is increased by four clock cycles. This increase comes in addition
to the start-up time from the selected sleep mode.
A return from an interrupt handling routine takes four clock cycles. During these 4-clock cycles,
the Program Counter (two bytes) is popped back from the Stack, the Stack Pointer is incre-
mented by two, and the I-bit in SREG is set.
Assembly Code Example
sei
; set global interrupt enable
sleep
; enter sleep, waiting for interrupt
; note: will enter sleep before any pending
; interrupt(s)
C Code Example
__enable_interrupt(); /* set global interrupt enable */
__sleep(); /* enter sleep, waiting for interrupt */
/* note: will enter sleep before any pending interrupt(s) */
相关PDF资料 |
PDF描述 |
|---|---|
| MR80C52XXX-30/883:RD | 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CQCC44 |
| MQ80C52EXXX-25:D | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C52XXX-16:D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C52XXX-36/883:RD | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQFP44 |
| MD80C32E-16SHXXX:D | 8-BIT, 16 MHz, MICROCONTROLLER, CDIP40 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MR80C51BH | 制造商:ROCHESTER 制造商全称:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MR80C86 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86/B | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:Microprocessor, 16 Bit, 44 Pin, Ceramic, LCC |
| MR80C86-2 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86-2/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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