STM8AF6213 datasheet(20/106 Pages) STMICROELECTRONICS

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Product overview

STM8AF6213/23/23A/26

20/106

DocID025118 Rev 5

4.13

Analog-to-digital converter (ADC1)

The STM8AF6213, STM8AF6223, STM8AF6223A and STM8AF6226 products contain a

10-bit successive approximation A/D converter (ADC1) with up to 7 external and 1 internal

multiplexed input channels and the following main features:



Input voltage range: 0 to VDD



Input voltage range: 0 to VDDA



Conversion time: 14 clock cycles



Single and continuous and buffered continuous conversion modes



Buffer size (n x 10 bits) where n = number of input channels



Scan mode for single and continuous conversion of a sequence of channels



Analog watchdog capability with programmable upper and lower thresholds



Internal reference voltage on channel AIN7



Analog watchdog interrupt



External trigger input



Trigger from TIM1 TRGO



End of conversion (EOC) interrupt

Note:

Additional AIN12 analog input is not selectable in ADC scan mode or with analog watchdog.

Values converted from AIN12 are stored only into the ADC_DRH/ADC_DRL registers.

Internal bandgap reference voltage

Channel AIN7 is internally connected to the internal bandgap reference voltage. The internal

bandgap reference is constant and can be used, for example, to monitor VDD. It is

independent of variations in VDD and ambient temperature TA.

4.14

Communication interfaces

The following communication interfaces are implemented:



LINUART: Full feature UART, synchronous mode, SPI master mode, Smartcard mode,

IrDA mode, single wire mode, LIN2.2 capability



SPI: full and half-duplex, 8 Mbit/s



I²C: up to 400 Kbit/s

Some peripheral names differ between the datasheet and STM8S series and STM8AF

series 8-bit microcontrollers reference manual, RM0016 (see Table 4).

Table 4. Communication peripheral naming correspondence

Peripheral name in datasheet

Peripheral name in reference manual

(RM0016)

LINUART

UART4

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