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STM32L452VCU6 Datasheet(PDF) 95 Page - STMicroelectronics

No. de pieza STM32L452VCU6
Descripción Electrónicos  Ultra-low-power ARM® Cortex®-M4 32-bit MCUFPU, 100DMIPS, up to 512KB Flash, 160KB SRAM, analog, audio, ext. SMPS
PDF  210 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L452VCU6 Datasheet(HTML) 95 Page - STMicroelectronics

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STM32L452xx
Electrical characteristics
186
6.3.4
Embedded voltage reference
The parameters given in Table 26 are derived from tests performed under the ambient
temperature and supply voltage conditions summarized in Table 23: General operating
conditions.
Table 26. 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
-
-
TBD(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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