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STM32F031X4 bảng dữ liệu(PDF) 56 Page - STMicroelectronics

tên linh kiện STM32F031X4
Giải thích chi tiết về linh kiện  ARM-based 32-bit MCU with up to 32 Kbyte Flash, 9 timers, ADC and communication interfaces, 2.0 - 3.6 V
PDF  106 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32F031X4 bảng dữ liệu(HTML) 56 Page - STMicroelectronics

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Electrical characteristics
STM32F031x4 STM32F031x6
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DocID025743 Rev 4
Figure 16. Typical application with an 8 MHz crystal
1. REXT value depends on the crystal characteristics.
Low-speed external clock generated from a crystal resonator
The low-speed external (LSE) clock can be supplied with a 32.768 kHz crystal resonator
oscillator. All the information given in this paragraph are based on design simulation results
obtained with typical external components specified in Table 34. 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 characteristics (frequency,
package, accuracy).
Table 34. LSE oscillator characteristics (fLSE = 32.768 kHz)
Symbol
Parameter
Conditions(1)
Min(2)
Typ
Max(2) Unit
IDD
LSE current consumption
LSEDRV[1:0]=00
lower driving capability
-0.5
0.9
µA
LSEDRV[1:0]= 01
medium low driving capability
--
1
LSEDRV[1:0] = 10
medium high driving capability
--
1.3
LSEDRV[1:0]=11
higher driving capability
--
1.6



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