STM8L052C6 datasheet(19/102 Pages) STMICROELECTRONICS

19 / 102 page

STM8L052C6

Functional overview

Doc ID 023331 Rev 1

19/102

3.9

Analog-to-digital converter

●

12-bit analog-to-digital converter (ADC1) with 25 channels (including 1 fast channel)

and internal reference voltage

●

Conversion time down to 1 µs with fSYSCLK= 16 MHz

●

Programmable resolution

●

Programmable sampling time

●

Single and continuous mode of conversion

●

Scan capability: automatic conversion performed on a selected group of analog inputs

●

Analog watchdog

●

Triggered by timer

Note:

ADC1 can be served by DMA1.

3.10

System configuration controller and routing interface

The system configuration controller provides the capability to remap some alternate

functions on different I/O ports. TIM4 and ADC1 DMA channels can also be remapped.

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

different I/Os to the TIM1 timer input captures. It also controls the routing of internal analog

signals to ADC1 and the internal reference voltage VREFINT.

3.11

Timers

The medium density value line STM8L05xxx devices contain one advanced control timer

(TIM1), two 16-bit general purpose timers (TIM2 and TIM3) and one 8-bit basic timer

(TIM4).

All the timers can be served by DMA1.

Table 2 compares the features of the advanced control, general-purpose and basic timers.

Table 2.

Timer feature comparison

Timer

Counter

resolution

Counter

type

Prescaler factor

DMA1

request

generation

Capture/compare

channels

Complementary

outputs

TIM1

16-bit

up/down

Any integer

from 1 to 65536

Yes

3 + 1

TIM2

Any power of 2

from 1 to 128

None

TIM3

TIM4

8-bit

Any power of 2

from 1 to 32768

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