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C8051F339 参数 Datasheet PDF下载

C8051F339图片预览
型号: C8051F339
PDF下载: 下载PDF文件 查看货源
内容描述: 混合信号ISP功能的Flash MCU系列 [Mixed Signal ISP Flash MCU Family]
分类和应用:
文件页数/大小: 234 页 / 3348 K
品牌: SILICON [ SILICON ]
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C8051F336/7/8/9  
25.2. PCA0 Interrupt Sources  
Figure 25.3 shows a diagram of the PCA interrupt tree. There are five independent event flags that can be  
used to generate a PCA0 interrupt. They are: the main PCA counter overflow flag (CF), which is set upon  
a 16-bit overflow of the PCA0 counter, an intermediate overflow flag (COVF), which can be set on an over-  
flow from the 8th, 9th, 10th, or 11th bit of the PCA0 counter, and the individual flags for each PCA channel  
(CCF0, CCF1, and CCF2), which are set according to the operation mode of that module. These event  
flags are always set when the trigger condition occurs. Each of these flags can be individually selected to  
generate a PCA0 interrupt, using the corresponding interrupt enable flag (ECF for CF, ECOV for COVF,  
and ECCFn for each CCFn). PCA0 interrupts must be globally enabled before any individual interrupt  
sources are recognized by the processor. PCA0 interrupts are globally enabled by setting the EA bit and  
the EPCA0 bit to logic 1.  
(for n = 0 to 2)  
PCA0CPMn  
PCA0CN  
PCA0MD  
PCA0PWM  
P E C C M T P E  
W C A A A O W C  
M O P P T G M C  
1 M P N n n n F  
C C  
F R  
C C C  
C C C  
F F F  
2 1 0  
C WW C C C E  
I D D P P P C  
D T L S S S F  
L E C 2 1 0  
K
A C E  
C C  
L L  
S S  
E E  
L L  
1 0  
R O C  
S V O  
E F V  
L
6 n n n  
n
n
PCA Counter/Timer 8, 9,  
10 or 11-bit Overflow  
Set 8, 9, 10, or 11 bit Operation  
EPCA0  
0
1
PCA Counter/Timer 16-  
bit Overflow  
0
1
EA  
ECCF0  
Interrupt  
Priority  
Decoder  
0
1
0
1
0
1
PCA Module 0  
(CCF0)  
ECCF1  
ECCF2  
0
1
PCA Module 1  
(CCF1)  
0
1
PCA Module 2  
(CCF2)  
Figure 25.3. PCA Interrupt Block Diagram  
Rev. 0.2  
211