L99PM72PXP datasheet(11/128 Pages) STMICROELECTRONICS

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L99PM72PXP

Block diagram and pin description

Doc ID 023553 Rev 3

11/128

Table 2.

Pin definitions and functions

Symbol

Function

AGND

Analog ground

RxDC/NINT

RxDC -> CAN receive data output

NINT -> indicates remote CAN wake-up events in Active Mode (transceiver in

TRX_STBY; CAN_ACT = 0)

TxDC

CAN transmit data Input

CANH

CAN high level voltage I/O

CANL

CAN low level voltage I/O

6N.C.

TBC

CANSUP

CAN supply input; to allow external CAN supply from V1 or V2 regulator.

NRESET

Nreset output to microcontroller; Internal pull-up of typ. 100 K

(reset state = LOW)

Voltage regulator 1 output: 5 V supply e.g. micro controller, CAN transceiver

Voltage regulator 2 output: 5 V supply for external loads (IR receiver,

potentiometer, sensors) or CAN transceiver. V2 is protected against reverse

supply.

TxDL

LIN transmit data input

RxDL/NINT

RxDL -> LIN receive data output

NINT -> indicates local/remote wake-up events except CAN wake-up in Active

Mode provides a programmable timer interrupt signal

OP2+

Non inverting input of operational amplifier 2

OP2-

Inverting input of operational amplifier 2

OP2_OUT

Output of operational amplifier 2

SPI: serial data input

SPI: serial data output

CLK

SPI: serial clock input

CSN

SPI: chip select not input

20…22

WU1…3

Wake-up Inputs 1…3: Input pins for static or cyclic monitoring of external

contacts

OP1_OUT

Output of operational amplifier 1

OP1-

Inverting input of operational amplifier 1

OP1+

Non inverting input of operational amplifier 1

OUT4

High side driver output (7

, typ)

OUT3/FSO

Configurable as:

– High-side driver output (7

, typ)

– Fail safe output pin (default)

OUT2

High side driver output (7

, typ)

OUT1

High side driver output (7

, typ)

OUT_HS

High side driver (1

, typ)

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