参数资料
型号: SN8P1603S
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: 43/94页
文件大小: 540K
代理商: SN8P1603S
SN8P1600
8-bit micro-controller
SONiX TECHNOLOGY CO., LTD
Page 43
Revision 1.94
EXTERNAL HIGH-SPEED OSCILLATOR
SN8P1600 can be operated in four different oscillator modes. There are external RC oscillator modes, high
crystal/resonator mode (12M code option), standard crystal/resonator mode (4M code option) and low crystal mode
(32K code option). For different application, the users can select one of satiable oscillator mode by programming code
option to generate system high-speed clock source after reset.
Example: Stop external high-speed oscillator.
B0BSET
FSTPHX
; To stop external high-speed oscillator only.
B0BSET
FCPUM0
; To stop external high-speed oscillator and internal low-speed
; Oscillator called power down mode (sleep mode).
OSCILLATOR MODE CODE OPTION
SN8P1600 has four oscillator modes for different applications. These modes are 4M, 12M, 32K and RC. The main
purpose is to support different oscillator types and frequencies. MCU needs more current when operating at
High-speed mode than the low-speed mode. For crystals, there are three steps to select. If the oscillator is RC type, to
select “RC” and the system will divide the frequency by 2 automatically. User can select oscillator mode from code
option table before compiling. Following is the code option table.
Code Option
Oscillator Mode
00
RC mode
01
32K
10
12M
11
4M
OSCILLATOR DEVIDE BY 2 CODE OPTION
SN8P1600 has a code option to divide external clock by 2,called “High_Clk / 2”. If “High_Clk / 2” is enabled, the
external clock frequency is divided by 8 for the Fcpu. Fcpu is equal to Fosc/8. If “High_Clk / 2” is disabled, the external
clock frequency is divided by 4 for the Fcpu. The Fcpu is equal to Fosc/4.
Note: In RC mode, “High_Clk / 2” is always enabled.
OSCILLATOR SAFE GUARD CODE OPTION
SN8P1600 builds in an oscillator safe guard (OSG) to make oscillator more stable. It is a low-pass filter circuit and
stops high frequency noise into system from external oscillator circuit. This function makes system to work better under
AC noisy conditions.
Remark
Output the Fcpu square wave from Xout pin.
32768Hz
12MHz ~ 16MHz
3.58MHz
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SN8P1603X 制造商:SONIX 制造商全称:SONIX 功能描述:8-Bit Micro-Controller
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