SN8P1700
8-bit micro-controller build-in 12-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 105
Revision 1.93
SYSTEM OSCILLATOR CIRCUITS
MCU
XIN
VDD
XOUT
VSS
CRYSTAL
20PF
20PF
Figure 6-2. Crystal/Ceramic Oscillator
MCU
XIN
VDD
VSS
XOUT
C
R
Figure 6-3. RC Oscillator
XIN
VDD
MCU
VSS
XOUT
External Clock Input
Figure 6-4. External clock input
Note1: The VDD and VSS of external oscillator circuit must be from the micro-controller. Don’t connect
them from the neighbor power terminal.
Note2: The external clock input mode can select RC type oscillator or crystal type oscillator of the code
option and input the external clock into XIN pin.
Note3: In RC type oscillator code option situation, the external clock’s frequency is divided by 2.
Note4: The power and ground of external oscillator circuit must be connected from the micro-controller’s
VDD and VSS. It is necessary to step up the performance of the whole system.