SN8P2711A
8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 51
Version 0.1
4.4.2.1 CRYSTAL/CERAMIC
Crystal/Ceramic devices are driven by XIN, XOUT pins. For high/normal/low frequency, the driving currents are
different. High_Clk code option supports different frequencies. 12M option is for high speed (ex. 12MHz). 4M option is
for normal speed (ex. 4MHz). 32K option is for low speed (ex. 32768Hz).
MCU
VCC
GND
C
20pF
XIN
XOUT
VDD
VSS
C
20pF
CRYSTAL
Note: Connect the Crystal/Ceramic and C as near as possible to the XIN/XOUT/VSS pins of
micro-controller.
4.4.2.2 RC
Selecting RC oscillator is by RC option of High_Clk code option. RC type oscillator’s frequency is up to 10MHz. Using
“R” value is to change frequency. 50P~100P is good value for “C”. XOUT pin is general purpose I/O pin.
R
MCU
VCC
GND
XIN
XOUT
VDD
VSS
C
Note: Connect the R and C as near as possible to the VDD pin of micro-controller.