MLX80031 datasheet(21/50 Pages) MELEXIS

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MLX80050/51/30/31

LIN System Basis ICs

Datasheet

MLX80050/51/30/31 – Datasheet

Page 21

3901080050

Jun 2016

011

4. Operational Modes

The MLX8003x/5x provides four main operating modes “Standby”, “Normal”, “Silent” and “Sleep”. The main modes are

fixed states defined by basic actions (VS start, EN or wake-up).

Sleep-

Mode

EN = H/L & TxD =H

VSUP power on

Normal

Mode

Silent

Mode

EN = L/H

[1] Set Slew Mode:

Normal => EN=L/H & TxD=H (default)

Low Slew => EN=L/H & TxD=L

EN = H/L & TxD=L

Local wake-up or

Remote wake-up

or EN = L/H

Regulator on

LIN transmitter off

LIN termination 30k

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RxD = high

TxD = high

Regulator off

LIN transmitter off

LIN termination 200k

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RxD: floating (0V)

TxD: floating (0V)

Standby

EN = H

[2] or L/H [1]

Regulator on

NRES = H

LIN transmitter on

LIN termination 30k

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RxD:= data output

TxD:= data input

Regulator on; VCC ramp up

VCC cross reset threshold -> start tres

LIN transmitter off

LIN termination 30k

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after power on:

RxD: high

TxD: high

after wake up:

RxD: low

TxD: wake source output

t > tsby (350ms) &

Vcc > VRES

Init

Start Vaux;

Regulator OFF

End of Initialization

Local wake-up or

Remote wake-up or

Vcc < VRES

[2] Only after Wake-up from Sleep mode

with EN=L/H

Figure 5: MLX8005x3x state diagram of modes of operation

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