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STM32L072X8 bảng dữ liệu(PDF) 109 Page - STMicroelectronics

tên linh kiện STM32L072X8
Giải thích chi tiết về linh kiện  Ultra-low-power 32-bit MCU ARM-based Cortex-M0, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs
PDF  147 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32L072X8 bảng dữ liệu(HTML) 109 Page - STMicroelectronics

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STM32L072xx
Electrical characteristics
117
The analog spike filter is compliant with I2C timings requirements only for the following
voltage ranges:
Fast mode Plus: 2.7 V
VDD 3.6 V and voltage scaling Range 1
Fast mode:
–2 V
 VDD  3.6 V and voltage scaling Range 1 or Range 2.
–VDD < 2 V, voltage scaling Range 1 or Range 2, Cload < 200 pF.
In other ranges, the analog filter should be disabled. The digital filter can be used instead.
Note:
In Standard mode, no spike filter is required.
USART/LPUART characteristics
The parameters given in the following table are guaranteed by design.
Table 73. I2C analog filter characteristics(1)
1. Guaranteed by characterization results.
Symbol
Parameter
Conditions
Min
Max
Unit
tAF
Maximum pulse width of spikes that
are suppressed by the analog filter
Range 1
50(2)
2. Spikes with widths below tAF(min) are filtered.
100(3)
3. Spikes with widths above tAF(max) are not filtered
ns
Range 2
-
Range 3
-
Table 74. USART/LPUART characteristics
Symbol
Parameter
Conditions
Typ
Max
Unit
tWUUSART
Wakeup time needed to
calculate the maximum
USART/LPUART baudrate
allowing to wake up from
Stop mode
Stop mode with main regulator in
Run mode, Range 2 or 3
-8.7
µs
Stop mode with main regulator in
Run mode, Range 1
-8.1
Stop mode with main regulator in
low-power mode, Range 2 or 3
-12
Stop mode with main regulator in
low-power mode, Range 1
-11.4



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