STM32L010RB datasheet(23/89 Pages) STMICROELECTRONICS

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DS12319 Rev 3

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STM32L010RB

Functional overview

frequencies (~25 µA at 10 ksps, ~200 µA at 1 Msps). An auto-shutdown function

guarantees that the ADC is powered off except during the active conversion phase.

The ADC can be served by the DMA controller.

The ADC features a hardware oversampler up to 256 samples, this improves the resolution

to 16 bits. See the application note Improving STM32F1x and STM32L1x ADC resolution by

oversampling (AN2668).

An analog watchdog feature allows very precise monitoring of the converted voltage of one,

some or all scanned channels. An interrupt is generated when the converted voltage is

outside the programmed thresholds.

The events generated by the general-purpose timers (TIMx) can be internally connected to

the ADC start triggers, to allow the application to synchronize A/D conversions and timers.

3.11

Internal voltage reference (VREFINT)

The internal voltage reference (VREFINT) provides a stable (bandgap) voltage output for the

ADC. VREFINT is internally connected to the ADC_IN17 input channel. It enables accurate

monitoring of the VDD value (since no external voltage, VREF+, is available for ADC). The

precise voltage of VREFINT is individually measured for each part by ST during production

test and stored in the system memory area (see Table 17: Embedded internal reference

voltage calibration values). It is accessible in read-only mode.

Reference voltage

The internal reference voltage is available externally via a low-power / low-current output

buffer (driving current capability of 1 µA typical).

3.12

System configuration controller

The system configuration controller provides the capability to remap some alternate

functions on different I/O ports.

The highly flexible routing interface allows the application firmware to control the routing of

different I/Os to the TIM2, TIM21, TIM22 and LPTIM1 timer input captures. The system

configuration controller also controls the routing of internal analog signals to the ADC and

the internal reference voltage VREFINT.

STM32L010RB Arkusz danych(PDF) 23 Page - STMicroelectronics