STM8T143 datasheet(29/65 Pages) STMICROELECTRONICS

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STM8T143

Device operation

6.2

Device operating modes

The STM8T143 device provides three operating modes:

•

Dual output mode

•

Control mode

•

Data streaming mode

These modes are selected through the option bytes.

6.2.1

Dual output mode

The device is configured by default in Control mode. The Dual output/Control mode bit

allows the user to configure pin 8 of the device in Control input or Proximity output.

When Dual output mode is selected, pin 8 becomes the proximity output while pin1 is the

touch output.

Table 4. Pin 1 configuration

Pin 1 configuration

Data streaming

mode

Dual output/Control

mode

Output

type

Output

polarity

OPT1 bit 7

OPT1 bit 0

OPT2 bit 5

OPT0 bit 1

DATA pin

Open drain output

Proximity output

Open drain output, active low

Proximity output

Push-pull output, active high

Touch output

Open drain output, active low

Touch output

Push-pull output, active high

Proximity output

Open drain output, active low

Proximity output

Push-pull output, active high

Table 5. Pin 8 configuration

Pin 8 configuration

Dual output/Control mode

Control type

Output polarity

OPT1 bit 0

OPT0 bit 0

OPT0 bit 1

Halt control input

ECS control input

Proximity output

Push-pull output, active low

Touch output

Push-pull output, active high

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