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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  
32  
Port Input  
Data Register  
Schmitt Trigger  
Q
D
Q
D
System  
Clock  
VDD  
Port Output Control  
Port Output  
Data Register  
DATA  
Bus  
D
Q
Port  
Pin  
System  
Clock  
Port Data Direction  
GND  
Figure 6.GPIO Port Pin Block Diagram  
GPIO Alternate Functions  
Many of the GPIO port pins can be used for general-purpose I/O and access to on-chip  
peripheral functions such as the timers and serial communication devices. The Port A–D  
Alternate Function sub-registers configure these pins for either General-Purpose I/O or  
alternate function operation. When a pin is configured for alternate function, control of the  
port pin direction (input/output) is passed from the Port A–D Data Direction registers to  
the alternate function assigned to this pin. Table 14 on page 34 lists the alternate functions  
possible with each port pin. The alternate function associated at a pin is defined through  
Alternate Function Sets sub-registers AFS1 and AFS2.  
The crystal oscillator functionality is not controlled by the GPIO block. When the crystal  
oscillator is enabled in the oscillator control block, the GPIO functionality of PA0 and PA1  
is overridden. In that case, those pins function as input and output for the crystal oscillator.  
PA0 and PA6 contain two different timer functions, a timer input and a complementary  
timer output. Both of these functions require the same GPIO configuration, the selection  
between the two is based on the timer mode. See “Timers” on page 58 for more details.  
PS024705-0405  
P R E L I M I N A R Y  
General-Purpose I/O