L9952XP datasheet(9/68 Pages) STMICROELECTRONICS

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L9952GXP

Pin definitions and functions

Doc ID 13518 Rev 5

9/68

TxD

Transmitter input of the LIN 2.1 transceiver

OP2+

Non inverting input of operational sense amplifier

OP2-

Inverting input of operational sense amplifier

OP2OUT

Output of operational sense amplifier

SPI : serial data input

SPI : serial data output

CLK

SPI : serial clock input

CSN

SPI : chip select not input

PWM1

Pulse width modulation input

PWM2

Pulse width modulation input

Dig_Out3

Digital output

Dig_Out4/INT

Digital output (configurable as Interrupt Output)

Wu4..1

19 to 22

Wake-up input: input pins for static or cyclic monitoring of external

contacts

OP1OUT

Output of operational sense amplifier

OP1-

Inverting input of operational sense amplifier

OP1+

Non inverting input of operational sense amplifier

Out4..1

26 to 29

High side driver (7

Ω, typ.) - to supply e.g. LED’ s, HALL sensors or

external contacts

Out_HS

High side drivers (1

Ω, typ.) - to supply e.g. LED’ s, Bulbs, HALL

sensors or external contacts

Power supply voltage

LINPU

LIN master pull up

LIN

LIN bus line

Rel1

Low side driver (2

Ω, typ.) - e.g. relay

Rel2

Low side driver (2

Ω, typ.) - e.g. relay

FSO

Fail safe output - used to supervise or control applications in case of

watchdog and/or V1 under-voltage failure (e.g. to activate

emergency lights)

Table 2.

Pins definitions and functions (continued)

name

PowerSS0-36

Function

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