L9803 datasheet(10/126 Pages) STMICROELECTRONICS

10 / 126 page

General description

L9803

10/126

1.2

Pin out

Figure 2.

Pin out

1.3

Pin Description

AD2-AD4: Analog input to ADC.

PA0/OCMP2_1-PA1/OCMP1_1: I/Os or Output compares on Timer 1. Alternate function

software selectable (by setting OC2E or OC1E in CR2 register: bit 6 or 7 at 0031h). When

used as an alternate function, this pin is a push-pull output as requested by Timer 1.

Otherwise, this pin is a triggered floating input or a push-pull output.

PA2/ICAP2_1-PA3/ICAP1_1: I/Os or Input captures on Timer 1. Before using this I/O as

alternate inputs, they must be configured by software in input mode (DDR=0). In this case,

these pins are a triggered floating input. Otherwise (I/O function), these pin are triggered

floating inputs or push-pull outputs.

PA4/EXTCLK_1: PA4 I/O or External Clock on Timer 1. Before using this I/O as alternate

input, it must be configured by software in input mode (DDR=0). In this case, this pin is a

triggered floating input. Otherwise (I/O function), this pin is a triggered floating input or a

push-pull output.

64 63 62 61 60 59

58 57 56 55 54 53 52

21 22 23 24

29 30 31 32

25 26

27 28

AD3

AD2

PA1/OCMP1_1

PA0/OCMP2_1

VDD

OSCIN

OSCOUT

GND

VBL

PB1/EXTCLK_2

PWMO

PWMI

NRESET

CAN_H

CAN_L

GND

VDD

VB2

VB1

VBR

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