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STM32G474PBY3TR Datasheet(PDF) 117 Page - STMicroelectronics

Part # STM32G474PBY3TR
Description  Arm® Cortex®-M4 32-bit MCUFPU, 170 MHz / 213 DMIPS, 128 KB SRAM, rich analog, math acc, 184 ps 12 chan Hi-res timer
PDF  236 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32G474PBY3TR Datasheet(HTML) 117 Page - STMicroelectronics

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DS12288 Rev 5
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STM32G474xB STM32G474xC STM32G474xE
Electrical characteristics
200
Figure 19. High-speed external clock source AC timing diagram
Low-speed external user clock generated from an external source
In bypass mode the LSE oscillator is switched off and the input pin is a standard GPIO.
The external clock signal has to respect the I/O characteristics in Section 5.3.14. However,
the recommended clock input waveform is shown in Figure 20.
Figure 20. Low-speed external clock source AC timing diagram
Table 40. Low-speed external user clock characteristics(1)
1. Guaranteed by design.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fLSE_ext
User external clock source
frequency
-
-
32.768
1000
kHz
VLSEH
OSC32_IN input pin high
level voltage
-
0.7 VDD
-VDD
V
VLSEL
OSC32_IN input pin low level
voltage
-VSS
-0.3 VDD
tw(LSEH)
tw(LSEL)
OSC32_IN high or low time
-
250
-
-
ns
MS19214V2
VHSEH
tf(HSE)
90%
10%
THSE
t
tr(HSE)
VHSEL
tw(HSEH)
tw(HSEL)
MS19215V2
VLSEH
tf(LSE)
90%
10%
TLSE
t
tr(LSE)
VLSEL
tw(LSEH)
tw(LSEL)



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