L9803 datasheet(38/126 Pages) STMICROELECTRONICS

38 / 126 page

On-Chip Peripherals

L9803

38/126

Dedicated Configurations

Table 7.

Port A Configuration

PORT A

I / O

Function

Input

Output

Alternate

Interrupt

PA0

triggered with pull-up

push-pull/open drain

OCMP2_1: Output Compare

#2 Timer 1

wake-up interrupt

(I0)

PA1

triggered with pull-up

push-pull/open drain

OCMP1_1: Output Compare

#1 Timer 1

wake-up interrupt

(I0)

PA2

triggered with pull-up

push-pull/open drain

ICAP2_1: Input Capture #2

Timer 1

wake-up interrupt

(I0)

PA3

triggered with pull-up

push-pull/open drain

ICAP1_1: Input Capture #1

Timer 1

wake-up interrupt

(I0)

PA4

triggered with pull-up

push-pull/open drain

EXTCLK_1: External Clock

Timer 1

wake-up interrupt

(I0)

PA5

triggered with pull-up

push-pull/open drain

OCMP2_2: Output Compare

#2 Timer 2

wake-up interrupt

(I0)

PA6

triggered with pull-up

push-pull/open drain

OCMP1_2: Output Compare

#1 Timer 2

wake-up interrupt

(I0)

PA7

triggered with pull-up

push-pull/open drain

ICAP2_2: Input Capture #2

Timer 2

wake-up interrupt

(I0)

Table 8.

Port B Configuration

PORT B

I / O

Function

Input

Output

Alternate

Interrupt

PB0

triggered with pull-up

push-pull/open drain

ICAP1_2: Input Capture #1

Timer 2

wake-up interrupt

(I0)

PB1

triggered with pull-up

push-pull/open drain

EXTCLK_2: External Clock

Timer 2

wake-up interrupt

(I0)

PB2(1)

Not connected to pad

PWMI: PWM input

The PB2 bit is not connected to the external. It must be configured as an Input without interrupt, to be used only as an

alternate function.

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