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STM32L433CB Datasheet(PDF) 98 Page - STMicroelectronics

No. de pieza STM32L433CB
Descripción Electrónicos  Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, up to 256KB Flash, 64KB SRAM, USB FS, LCD, ext. SMPS
PDF  225 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L433CB Datasheet(HTML) 98 Page - STMicroelectronics

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Electrical characteristics
STM32L433xx
98/225
DS11449 Rev 5
6.3.4
Embedded voltage reference
The parameters given in Table 25 are derived from tests performed under the ambient
temperature and supply voltage conditions summarized in Table 22: General operating
conditions.
Table 25. Embedded internal voltage reference
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VREFINT
Internal reference voltage
–40 °C < TA < +130 °C
1.182
1.212
1.232
V
tS_vrefint (1)
ADC sampling time when
reading the internal reference
voltage
-4(2)
--
µs
tstart_vrefint
Start time of reference voltage
buffer when ADC is enable
--
8
12(2)
µs
IDD(VREFINTBUF)
VREFINT buffer consumption
from VDD when converted by
ADC
-
-
12.5
20(2)
µA
∆VREFINT
Internal reference voltage
spread over the temperature
range
VDD = 3 V
-
5
7.5(2)
mV
TCoeff
Temperature coefficient
–40°C < TA < +130°C
-
30
50(2)
ppm/°C
ACoeff
Long term stability
1000 hours, T = 25°C
-
300
1000(2)
ppm
VDDCoeff
Voltage coefficient
3.0 V < VDD < 3.6 V
-
250
1200(2)
ppm/V
VREFINT_DIV1
1/4 reference voltage
-
24
25
26
%
VREFINT
VREFINT_DIV2
1/2 reference voltage
49
50
51
VREFINT_DIV3
3/4 reference voltage
74
75
76
1. The shortest sampling time can be determined in the application by multiple iterations.
2. Guaranteed by design.



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