SN8P2604A
8-Bit Micro-Controller
4.4.1.1 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).
XIN
CRYSTAL
XOUT MCU
C
C
VDD
20pF
20pF
VCC
GND
Note: Connect the Crystal/Ceramic and C as near as possible to the XIN/XOUT/VSS pins of
micro-controller.
4.4.1.2 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.
XOUT
XIN
MCU
R
C
VDD
VSS
VCC
GND
Note: Connect the R and C as near as possible to the VDD pin of micro-controller.
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