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ATMEGA8L-8AUR 参数 Datasheet PDF下载

ATMEGA8L-8AUR图片预览
型号: ATMEGA8L-8AUR
PDF下载: 下载PDF文件 查看货源
内容描述: 8位爱特梅尔带有8K字节的系统内可编程闪存 [8-bit Atmel with 8KBytes In-System PRogrammable Flash]
分类和应用: 闪存
文件页数/大小: 331 页 / 6705 K
品牌: ATMEL [ ATMEL ]
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ATmega8(L)  
• Bit 0 – IVCE: Interrupt Vector Change Enable  
The IVCE bit must be written to logic one to enable change of the IVSEL bit. IVCE is cleared by  
hardware four cycles after it is written or when IVSEL is written. Setting the IVCE bit will disable  
interrupts, as explained in the IVSEL description above. See Code Example below.  
Assembly Code Example  
Move_interrupts:  
; Enable change of Interrupt Vectors  
ldi r16, (1<<IVCE)  
out GICR, r16  
; Move interrupts to boot Flash section  
ldi r16, (1<<IVSEL)  
out GICR, r16  
ret  
C Code Example  
void Move_interrupts(void)  
{
/* Enable change of Interrupt Vectors */  
GICR = (1<<IVCE);  
/* Move interrupts to boot Flash section */  
GICR = (1<<IVSEL);  
}
50  
2486AA–AVR–02/2013