L99ASC03 datasheet(26/73 Pages) STMICROELECTRONICS

26 / 73 page

Device description

L99ASC03

26/73

DocID023504 Rev 7

VDD

Short circuit at VDD

turn-on

FS (FS = 1 in the

GSB)

VDDFAIL = 1

– Gate drivers

actively discharged;

charge pump, CSA

and BEMF module

OFF

– Control registers

(except Control

DSFT_DIS) reset to

default value

Read & Clear

VDDFAIL

Undervoltage

(VDD < reset

threshold)

FS (FS = 1 in the

GSB)

VDDUV = 1

– NRES asserted low

– Gate drivers

actively discharged;

charge pump, CSA

and BEMF module

OFF

– Control registers

(except Control

DSFT_DIS) reset to

default value

Read & Clear

VDDUV

Undervoltage

warning

(VDD_VTH = 0 and

VDD <VRT2)

GW (GW = 1 in

the GSB)

VRT2LOW = 1

– None

Read & Clear

VRT2LOW

SPI

SDI short circuit to

GND or VDD

FS and SPIE

(FS = 1 and

SPIE = 1 in the

GSB)

SPI_DI = 1 and

SPIE = 1 in the

GSB

– Gate drivers

actively discharged;

charge pump, CSA

and BEMF module

OFF

– Control registers

(except Control

DSFT_DIS bits)

reset to default

value

– SPI frame ignored

Read & Clear

SPI_DI

CSN timeout or

SCK clock count

other than 0 or 16

GW and SPIE

(GW = 1 and

SPIE = 1 in the

GSB)

SPI_FL = 1 and

SPIE = 1 in the

GSB

SPI frame ignored

Read & Clear

SPI_FL

Table 5. Diagnostics overview (continued)

Source

Cause

Event type

Diagnosis

Device action

Clear error /

warning flag

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