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STM32L010R8 Datasheet(PDF) 56 Page - STMicroelectronics

Part # STM32L010R8
Description  Value line ultra-low-power 32-bit MCU Arm®-based Cortex®-M0,64-Kbyte Flash memory, 8-Kbyte SRAM, 256-byte EEPROM, ADC
PDF  92 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L010R8 Datasheet(HTML) 56 Page - STMicroelectronics

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Electrical characteristics
STM32L010K8 STM32L010R8
56/92
DS12325 Rev 3
6.3.6
External clock source characteristics
High-speed external user clock generated from an external source
In bypass mode the input pin is a standard GPIO.The external clock signal has to respect
the I/O characteristics in Section 6.3.12. However, the recommended clock input waveform
is shown in Figure 14.
Figure 14. High-speed external clock source AC timing diagram
Table 32. High-speed external user clock characteristics(1)
1. Guaranteed by design, not tested in production.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fHSE_ext
User external clock source
frequency
CSS is ON or
PLL used
18
32
MHz
CSS is OFF,
PLL not used
08
32
MHz
VHSEH
CK_IN input pin high level voltage
-
0.7VDD
-VDD
V
VHSEL
CK_IN input pin low level voltage
VSS
-0.3VDD
tw(HSE)
tw(HSE)
CK_IN high or low time
12
-
-
ns
tr(HSE)
tf(HSE)
CK_IN rise or fall time
-
-
20
Cin(HSE)
CK_IN input capacitance
-
2.6
-
pF
DuCy(HSE) Duty cycle
45
-
55
%
IL
CK_IN input leakage current
VSS ≤ VIN ≤ VDD
--
±1
µA
MSv48107V1
CK_IN
EXTER NAL
STM32L010
CLOCK SOURC E
VHSEH
tf(HSE)
tW(HSE)
IL
90%
10%
THSE
t
tr(HSE)
tW(HSE)
fHSE_ext
VHSEL



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