Electrical characteristics
STM32F373xx
6.3.4
Embedded reference voltage
The parameters given in Table 27 are derived from tests performed under ambient
temperature and VDD supply voltage conditions summarized in Table 22.
Table 26. Embedded internal reference voltage calibration values
Calibration value name
Description
Memory address
VREFINT_CAL
Raw data acquired at
temperature of 30 °C
VDDA= 3.3 V
0x1FFF F7BA - 0x1FFF F7BB
Table 27. Embedded internal reference voltage
Symbol
Parameter
Conditions
Min Typ Max Unit
VREFINT Internal reference voltage
–40 °C < TA < +105 °C 1.20 1.23 1.25
V
TS_vrefint(1)
ADC sampling time when
reading the internal reference
voltage
-
17.10 -
-
µs
Internal reference voltage
VREFINT_s(2) spread over the temperature
VDD = 3 V ±10 mV
-
- 10 mV
range
TCoeff(2)
tSTART(2)
Temperature coefficient
Startup time
-
-
- 100 ppm/°C
-
-
- 10
µs
1. Shortest sampling time can be determined in the application by multiple iterations.
2. Guaranteed by design.
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