STM32L052X6 Datasheet, PDF (102/136 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M0+, up to 64 KB Flash memory, 8 KB SRAM, 2 KB EEPROM, USB, ADC, DAC

Electrical characteristics
STM32L052x6 STM32L052x8
Note:
The analog spike filter is compliant with I²C timings requirements only for the following
voltage ranges:
 Fast mode Plus: 2.7 V V_DD 3.6 V and voltage scaling Range 1
 Fast mode:
– 2 V  V_DD  3.6 V and voltage scaling Range 1 or Range 2.
– V_DD < 2 V, voltage scaling Range 1 or Range 2, C_load < 200 pF.
In other ranges, the analog filter should be disabled. The digital filter can be used instead.
In Standard mode, no spike filter is required.
Table 72. I2C analog filter characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min
Range 1
t_AF
Maximum pulse width of spikes that
are suppressed by the analog filter
Range 2
Range 3
50⁽²⁾
1. Guaranteed by characterization results.
2. Spikes with widths below t_AF(min) are filtered.
3. Spikes with widths above t_AF(max) are not filtered
Max
100⁽³⁾
-
-
Unit
ns
USART/LPUART characteristics
The parameters given in the following table are guaranteed by design.
Symbol
Table 73. USART/LPUART characteristics
Parameter
Conditions
Typ
Max
Unit
Stop mode with main regulator in
Run mode, Range 2 or 3
-
8.7
Wakeup time needed to ^{Stop mode with main regulator in}
calculate the maximum ^{Run mode, Range 1}
-
8.1
t_WUUSART
USART/LPUART baudrate
µs
allowing to wake up from
Stop mode
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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