Electrical characteristics
STM32F405xx, STM32F407xx
5.3.21
Temperature sensor characteristics
Table 69. Temperature sensor characteristics
Parameter
VSENSE linearity with temperature
Symbol
Min
Typ Max
Unit
(1)
TL
-
-
1
2.5
0.76
6
2
°C
mV/°C
V
Avg_Slope(1) Average slope
(1)
V25
Voltage at 25 °C
Startup time
-
(2)
tSTART
-
10
-
µs
(3)(2)
TS_temp
ADC sampling time when reading the temperature (1 °C accuracy)
10
-
µs
1. Based on characterization, not tested in production.
2. Guaranteed by design, not tested in production.
3. Shortest sampling time can be determined in the application by multiple iterations.
Table 70. Temperature sensor calibration values
Parameter
Symbol
Memory address
0x1FFF 7A2C - 0x1FFF 7A2D
TS_CAL2 TS ADC raw data acquired at temperature of 110 °C, VDDA=3.3 V 0x1FFF 7A2E - 0x1FFF 7A2F
TS_CAL1 TS ADC raw data acquired at temperature of 30 °C, VDDA=3.3 V
5.3.22
V
monitoring characteristics
BAT
Table 71. V
monitoring characteristics
BAT
Symbol
Parameter
Resistor bridge for VBAT
Min
Typ
Max
Unit
R
Q
-
-
50
2
-
-
KΩ
Ratio on VBAT measurement
Error on Q
Er(1)
–1
-
+1
%
ADC sampling time when reading the VBAT
1 mV accuracy
(2)(2)
TS_vbat
5
-
-
µs
1. Guaranteed by design, not tested in production.
2. Shortest sampling time can be determined in the application by multiple iterations.
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