STM32L072X8 datasheet(106/147 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L072xx

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Figure 34. 12-bit buffered/non-buffered DAC

6.3.17

Temperature sensor characteristics

6. Difference between the value measured at Code (0x800) and the ideal value = VREF+/2.

7. Difference between the value measured at Code (0x001) and the ideal value.

8. Difference between ideal slope of the transfer function and measured slope computed from code 0x000 and 0xFFF when

buffer is off, and from code giving 0.2 V and (VDDA – 0.2) V when buffer is on.

9. In buffered mode, the output can overshoot above the final value for low input code (starting from min value).

Table 68. Temperature sensor calibration values

Calibration value name

Description

Memory address

TS_CAL1

TS ADC raw data acquired at

temperature of 30 °C, VDDA= 3 V

0x1FF8 007A - 0x1FF8 007B

TS_CAL2

TS ADC raw data acquired at

temperature of 130 °C, VDDA= 3 V

0x1FF8 007E - 0x1FF8 007F

Table 69. Temperature sensor characteristics

Symbol

Parameter

Min

Typ

Max

Unit

TL(1)

1. Guaranteed by characterization results.

VSENSE linearity with temperature

1

2°C

Avg_Slope(1)

Average slope

1.48

1.61

1.75

mV/°C

V130

Voltage at 130°C ±5°C(2)

2. Measured at VDD = 3 V ±10 mV. V130 ADC conversion result is stored in the TS_CAL2 byte.

640

670

700

IDDA(TEMP)(3)

Current consumption

3.4

µA

tSTART(3)

3. Guaranteed by design.

Startup time

µs

TS_temp(4)(3)

4. Shortest sampling time can be determined in the application by multiple iterations.

ADC sampling time when reading the temperature

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