Datasheet

Electrical characteristics STM32F373xx
60/137 DocID022691 Rev 7
6.3.4 Embedded reference voltage
The parameters given in Table 27 are derived from tests performed under ambient
temperature and V
DD
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
V
DDA
= 3.3 V
0x1FFF F7BA - 0x1FFF F7BB
Table 27. Embedded internal reference voltage
Symbol Parameter Conditions Min Typ Max Unit
V
REFINT
Internal reference voltage –40 °C < T
A
< +105 °C 1.20 1.23 1.25 V
T
S_vrefint
(1)
1. Shortest sampling time can be determined in the application by multiple iterations.
ADC sampling time when
reading the internal reference
voltage
- 17.10 - - µs
V
REFINT_s
(2)
2. Guaranteed by design.
Internal reference voltage
spread over the temperature
range
V
DD
= 3 V ±10 mV - - 10 mV
T
Coeff
(2)
Temperature coefficient - - - 100 ppm/°C
t
START
(2)
Startup time - - - 10 µs
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