SN32F100 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 48
Version 1.9
Note: Connect the Crystal/Ceramic and C as near as possible to the LXIN/LXOUT/VSS pins of MCU. The
capacitor between LXIN/LXOUT and VSS must be 10pF.
3.2.3.6
Bypass Mode
Clock Source
H/W Configuration
Description
External clock source
(Bypass)
In Bypass mode, the external clock signal
(square, sinus or triangle) with ~50% duty
cycle must be provided to drive the XTALIN/
LXTALIN
pin
while
the
XTALOUT/
LXTALOUT pin should be the inverse of
the
input clock signal.
EHS X’tal can have a frequency of up to 25
MHz. Select this mode by setting EHSEN bit
in
ELS
X’TAL must have a frequency of 32.768
KHz. You select this mode by setting
ELSEN bit in
External X’TAL
(EHS/ELS X’TAL)
The 1 to 25 MHz EHS X’TAL has the
advantage of producing a very accurate rate
on the main clock
ELS X’TAL must have a frequency of 32.768
KHz.
MCU
VCC
GND
C
10pF
LXIN
LXOUT
VDD
V
S
S
C
10pF
32768Hz
Содержание SN32F107
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