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SN8P1602AX bảng dữ liệu(PDF) 45 Page - SONiX Technology Company

tên linh kiện SN8P1602AX
Giải thích chi tiết về linh kiện  8-Bit Micro-Controller
PDF  94 Pages
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nhà sản xuất  SONIX [SONiX Technology Company]
Trang chủ  http://www.sonix.com.tw
Logo SONIX - SONiX Technology Company

SN8P1602AX bảng dữ liệu(HTML) 45 Page - SONiX Technology Company

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SN8P1600
8-bit micro-controller
SONiX TECHNOLOGY CO., LTD
Page 45
Revision 1.94
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
P1.0
; Output Fcpu toggle signal in low-speed clock mode.
B0BCLR
P1.0
; Measure the Fcpu frequency by oscilloscope.
JMP
@B



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