VNQ6004SA-E datasheet(13/73 Pages) STMICROELECTRONICS

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VNQ6004SA-E

Functional description

Table 2. Operating modes

Operating

mode

Entering conditions

Leaving conditions

Characteristics

Reset

–Startup

– Any mode:

VDD < VDDR

– Sleep 1:

INX low to high

– All INX low: sleep 1

–VDD > VDDR: fail safe

– Outputs: according to INX

– SPI: inactive

– Registers: cleared

– Diagnostics: not available

Fail Safe

– Reset or sleep 1:

VDD > VDDR

– Standby or sleep 2:

CSN low for t > tstdby_out

–Normal:

EN = 0

or CSN time out

or SW reset

–VDD < VDDR: reset

– SPI sequence

1. UNLOCK = 1

2. STBY = 0

and EN = 1: normal

– SPI sequence

1. UNLOCK = 1

2. STBY = 1

and EN = 0: fail safe

– Outputs: according to INX

– SPI: active

– Registers: read/writeable,

cleared if entered after HW or

SW reset

– Diagnostics: SPI possible

CurrentSense not possible

Normal

– Fail Safe:

SPI sequence

1. UNLOCK = 1

2. STBY = 0

and EN = 1

–VDD < VDDR: reset

– SPI sequence

1. UNLOCK = 1

2. STBY = 1

and EN = 0: standby

–EN = 0

or CSN time out

or SW reset: fail safe

– Outputs: according to SPI

– SPI: active

– Registers: read/writeable

– Diagnostics: SPI and

CurrentSense possible

– Regular toggling of CSN

necessary

Standby

– Normal: SPI sequence

1. UNLOCK = 1

2. STBY = 1 and EN = 0

– Fail Safe: SPI sequence

1. UNLOCK = 1

2. STBY = 1 and EN = 0

– Sleep 2:

INX low to high

–VDD < VDDR: reset

– CSN low for t>tstdby_out: fail

safe

– All INX low: sleep 2

– Outputs: according to INX

– SPI: inactive

– Registers: frozen

– Diagnostics: not available

– Low supply current from VDD

Sleep 1

Reset: all INX = 0

–VDD > VDDR: fail safe

– INX low to high: reset

–Outputs: OFF

– SPI: inactive

– Registers: cleared

– Diagnostics: not available

– Low supply current from VDD and

VCC

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