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MPC82L54AS2 参数 Datasheet PDF下载

MPC82L54AS2图片预览
型号: MPC82L54AS2
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-bit micro-controller]
分类和应用: 微控制器
文件页数/大小: 74 页 / 1587 K
品牌: MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
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CF bit (CCON.7) will be set when the PCA timer overflows, and an interrupt will be generated  
if the ECF (CMOD.0) is set. The CF bit can only be cleared by software. There are four bits  
named CCF0, CCF1, CCF2 and CCF3 in SFR CCON. Those bits serve as flags for module-0,  
module-1, module-2, and module-3 respectively. They are set by hardware when either a  
match or a capture occurs. These flags also can only be cleared by software.  
Fosc/12  
To PCA module  
Fosc/2  
CH  
CL  
PCA  
interrupt  
Timer0 overflow  
16-bit counter  
External input  
ECI (P3.4)  
IDLE  
-
-
CIDL  
-
-
-
CPS1 CPS0 ECF  
CMOD  
CCON  
CCF3 CCF2 CCF1  
-
CF  
CR  
CCF0  
PCA Timer/Counter  
SFR: CMOD (PCA Counter Mode Register)  
Bit-7  
Bit-6  
Bit-5  
Bit-4  
Bit-3  
Bit-2  
Bit-1  
Bit-0  
CIDL  
-
-
-
-
CPS1  
CPS0  
ECF  
CIDL:= Behavior control of the PCA.  
0:= (default)  
Disable counting of the PCA counter while the MCU is put under idle state.  
1:=  
Enable counting of the PCA counter while the MCU is put under idle state.  
{ CPS1, CPS0 }:= Used to select the clocking source for PCA counter  
{ 0, 0 }:= set the frequency of the PCA counter clock source as oscillator’s frequency over 12  
{ 0, 1 }:= set the frequency of the PCA counter clock source as oscillator’s frequency over 2  
{ 1, 0 }:= set the PCA counter clock source as Timer-0 overflow  
{ 1, 1 }:= set the PCA counter clock source as pin ECI(pin P3.4)  
ECF:= Control bit of deciding if to pass interrupt from PCA timer overflow to the MCU  
0:= (default)  
Inhibit the interrupt from PCA timer to the MCU  
1:=  
Permit the interrupt from PCA timer to the MCU  
SFR: CCON (PCA Counter Control Register)  
Bit-7  
Bit-6  
Bit-5  
Bit-4  
Bit-3  
Bit-2  
Bit-1  
Bit-0  
CF  
CR  
-
-
CCF3  
CCF2  
CCF1  
CCF0  
MEGAWIN  
MPC82x54A Data Sheet  
39  
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