参数资料
型号: SN8P1604AS
厂商: SONIX Technology Co., Ltd.
英文描述: 8-Bit Micro-Controller
中文描述: 8位微控制器
文件页数: 45/94页
文件大小: 540K
代理商: SN8P1604AS
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
B0BCLR
JMP
P1.0
P1.0
@B
; Output Fcpu toggle signal in low-speed clock mode.
; Measure the Fcpu frequency by oscilloscope.
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SN8P1604AX 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller
SN8P1604K 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller
SN8P1604P 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller
SN8P1604Q 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller
SN8P1604S 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller