33910 datasheet(32/90 Pages) FREESCALE

32 / 90 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33910

FUNCTIONAL DEVICE OPERATIONS

OPERATIONAL MODES

MC33910G5AC/MC3433910G5AC

Table 7. Fault Detection Management Conditions

BLOCK

FAULT

MODE

CONDITION

FALLOUT

RECOVERY

MONITORING(64)

REG (FLAG,

BIT)

INTERRUPT

Power Supply

BATTERY FAIL

All modes

VSUP<3.0 V (typ)

then power-up

Condition gone

VSR (BATFAIL, 0)

VSUP OVER-

VOLTAGE

Normal, Normal

Request

VSUP > 19.25 V (typ)

In Normal mode, HS

shutdown if bit

HVSE=1 (reg MCR)

Condition gone, to

re-enable HS write to

HSCR registers

VSR (VSOV,3)

IRQ low +

ISR (0101)(65)

VSUP UNDER-

VOLTAGE

VSUP < 6.0 V (typ)

Condition gone

VSR (VSUV,2)

IRQ low + ISR

(0101)

VDD UNDER-

VOLTAGE

All except Sleep

VDD < 4.5 V (typ)

Reset (63)

VDD OVER-TEMP

PREWARNING

All except Low

Power modes

Temperature >

115°C (typ)

VSR (VDDOT,1)

IRQ low + ISR

(0101)

VDD OVER-

TEMPERATURE

Temperature >

170°C (typ)

VDD shutdown,

Reset then Sleep

LIN

RXD PIN SHORT

CIRCUIT

Normal, Normal

Request

RXD pin shorted to

GND or 5 V

LIN trans shutdown

LIN transmitter re-

enabled once the

condition is gone and

TXD is high

LINSR,

(RXSHORT,3)

IRQ low + ISR

(0100)(65)

TXD PIN

PERMANENT

DOMINANT

TXD pin low for more

than 1s (typ)

LIN transmitter

shutdown

LINSR (TXDOM,2)

LIN DRIVER OVER-

TEMPERATURE

Temperature >

160°C (typ)

LINSR (LINOT,1)

High Side

HIGH SIDE DRIVERS

OVER-

TEMPERATURE

Normal, Normal

Request

Temperature >

160°C (typ)

Both HS thermal

shutdown

Condition gone, to

re-enable HS write to

HSCR reg

All flags in HSSR

are set

IRQ low + ISR

(0010) (65)

HS1 OPEN-LOAD

DETECTION

Current through HSx

< 5.0 mA (typ)

Condition gone

HSSR (HS1OP,1)

HS2 OPEN-LOAD

DETECTION

HSSR (HS2OP,3)

HS1 OVER-

CURRENT

Current through HSx

tends to rise above

the current limit

60 mA (min)

HSx on with limited

current capability

60 mA (min)

HSSR (HS1CL,0)

HS2 OVER-

CURRENT

HSSR (HS2CL,2)

Watchdog

NORMAL REQUEST

TIME-OUT EXPIRED

Normal Request

The MCU did not

command the device

to Normal mode

within the 150 ms

timeout after reset

Reset

WATCHDOG

TIMEOUT

Normal

WD timeout or WD

clear within the

window closed

Reset

WDSR (WDTO, 3)

WATCHDOG ERROR

Normal

WDCONF pin is

floating

WD internal lower

precision timebase

150 ms (typ)

Connect WDCONF

to a resistor or to

GND

WDSR (WDERR, 2)

Notes

63.

When in Reset mode a VDD under-voltage condition combined with no VSUP under-voltage (VSUV=0) will send the device to Sleep mode.

64.

Registers to be read when back in Normal Request or Normal mode depending on the fault. Interrupts only generated in Normal, Normal Request and Stop modes

65.

Unless masked, If masked IRQ remains high and the ISR flags are not set.

33910 Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

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