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Z8F082ASH020SC 参数 Datasheet PDF下载

Z8F082ASH020SC图片预览
型号: Z8F082ASH020SC
PDF下载: 下载PDF文件 查看货源
内容描述: Z8喝采XP -R F08xA系列与扩展外设 [Z8 Encore XP-R F08xA Series with eXtended Peripherals]
分类和应用: 微控制器和处理器外围集成电路光电二极管时钟
文件页数/大小: 244 页 / 2750 K
品牌: ZILOG [ ZILOG, INC. ]
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Z8 Encore! XP® F08xA Series  
Product Specification  
46  
Interrupt Controller  
Overview  
The interrupt controller on the XP 8K Series products prioritizes the interrupt requests  
from the on-chip peripherals and the GPIO port pins. The features of the interrupt control-  
ler include the following:  
20 unique interrupt vectors:  
14 GPIO port pin interrupt sources (two are shared)  
10 on-chip peripheral interrupt sources (two are shared)  
Flexible GPIO interrupts  
8 selectable rising and falling edge GPIO interrupts  
4 dual-edge interrupts  
3 levels of individually programmable interrupt priority  
Watch-Dog Timer and Low Voltage Detect (LVD) can be configured to generate an inter-  
rupt  
Interrupt requests (IRQs) allow peripheral devices to suspend CPU operation in an orderly  
manner and force the CPU to start an interrupt service routine (ISR). Usually this interrupt  
service routine is involved with the exchange of data, status information, or control infor-  
mation between the CPU and the interrupting peripheral. When the service routine is com-  
pleted, the CPU returns to the operation from which it was interrupted.  
The eZ8 CPU supports both vectored and polled interrupt handling. For polled interrupts,  
the interrupt controller has no effect on operation. Refer to the eZ8 CPU User Manual for  
more information regarding interrupt servicing by the eZ8 CPU. The eZ8 CPU User Man-  
ual is available for download at www.zilog.com.  
Interrupt Vector Listing  
Table 31 lists all of the interrupts available in order of priority. The interrupt vector is  
stored with the most significant byte (MSB) at the even Program Memory address and the  
least significant byte (LSB) at the following odd Program Memory address.  
Some port interrupts are not available on the 8- and 20-pin packages. The ADC interrupt is  
unavailable on devices not containing an ADC.  
Note:  
PS024705-0405  
P R E L I M I N A R Y  
Interrupt Controller