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MM32F103VCT Datasheet(PDF) 52 Page - MindMotion Microelectronics

Part # MM32F103VCT
Description  32-bit Micro controller based on ARM Cortex M3
PDF  89 Pages
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Manufacturer  MINDMOTION [MindMotion Microelectronics]
Direct Link  https://www.mindmotion.com.cn/
Logo MINDMOTION - MindMotion Microelectronics

MM32F103VCT Datasheet(HTML) 52 Page - MindMotion Microelectronics

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DS_MM32F103xx_o_Ver1.13
Electrical characteristics
214366
90%
10%
tr(LSE)
tf(LSE)
TLSE
tw(LSE)
tw(LSE)
t
VLSEH
VLSEL
fLSE_ext
OSC32_IN
I L
External Clock
Source
Figure 15. Low-speed external clock source AC timing diagram
High-speed external clock generated from a crystal/ceramic
resonator
The high-speed external (HSE) clock can be supplied with an 2 to 24 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on design simu-
lation results obtained with typical external components specified in the table below. In the
application, the resonator and the load capacitors have to be placed as close as possible
to the oscillator pins in order to minimize output distortion and startup stabilization time.
Refer to the crystal resonator manufacturer for more details on the resonator characteris-
tics (frequency, package, accuracy...).
Table 20. HSE oscillator characteristics(1)(2)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC_IN
Oscillator frequency
2
8
24
MHz
RF
Feedback resistor
RS = 30Ω
1000
kΩ
CL1
CL2
(
3)
The proposed load
capacitance corresponds to
the crystal serial impedance
(RS)
(
4)
VDD = 3.3V
VIN = VSS
30pF load
30
pF
I2
HSE current consumption
Startup
1
mA
gm
Oscillator transconductance
VDD is stabilized
25
mA/V
tSU(HSE)
(
5)
Startup time
RS = 30Ω
2
mS
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer char-
acteristics Parameter.
www.mm32mcu.com
46/83



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