Datasheet

Electrical characteristics STM32F37xxx
60/131 DocID022691 Rev 4
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 1.16 1.21 1.26
V
–40 °C < T
A
< +85 °C 1.16 1.20 1.24
(1)
T
S_vrefint
(2)
ADC sampling time when reading the
internal reference voltage
17.10 - - µs
V
REFINT_s
(3)
Internal reference voltage spread over the
temperature range
V
DD
= 3 V ±10 mV - - 10 mV
T
Coeff
(3)
Temperature coefficient - - 100 ppm/°C
t
START
(3)
Startup time - - 10 µs
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.