Electrical characteristics
STM32F37xxx
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
Symbol
Table 27. Embedded internal reference voltage
Parameter
Conditions
Min Typ Max Unit
VREFINT Internal reference voltage
TS_vrefint(2)
ADC sampling time when reading the
internal reference voltage
–40 °C < TA < +105 °C 1.16 1.21 1.26
V
–40 °C < TA < +85 °C 1.16 1.20 1.24(1)
17.10 -
-
µs
VREFINT_s(3)
Internal reference voltage spread over the
temperature range
VDD = 3 V ±10 mV
-
TCoeff(3) Temperature coefficient
-
tSTART(3) Startup time
-
1. Data based on characterization results, not tested in production.
2. Shortest sampling time can be determined in the application by multiple iterations.
3. Guaranteed by design, not tested in production.
-
10
mV
- 100 ppm/°C
-
10
µs
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