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SN8P1603S 参数 Datasheet PDF下载

SN8P1603S图片预览
型号: SN8P1603S
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: 94 页 / 531 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
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SN8P1600  
8-bit micro-controller  
External RC Oscillator Frequency Measurement  
There are two ways to get the Fosc frequency of external RC oscillator. One measures the XOUT output waveform.  
Under external RC oscillator mode, the XOUT outputs the square waveform whose frequency is Fcpu. The other  
measures the external RC frequency by instruction cycle (Fcpu). The external RC frequency is the Fcpu multiplied by 4.  
We can get the Fosc frequency of external RC from the Fcpu frequency. The sub-routine to get Fcpu frequency of  
external oscillator is as the following.  
Example: Fcpu instruction cycle of external oscillator  
B0BSET  
P1M.0  
; Set P1.0 to be output mode for outputting Fcpu toggle  
signal.  
@@:  
B0BSET  
B0BCLR  
JMP  
P1.0  
P1.0  
@B  
; Output Fcpu toggle signal in low-speed clock mode.  
; Measure the Fcpu frequency by oscilloscope.  
SONiX TECHNOLOGY CO., LTD  
Page 45  
Revision 1.94  
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