33910 datasheet(40/90 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33910

FUNCTIONAL DEVICE OPERATIONS

LOGIC COMMANDS AND REGISTERS

MC33910G5AC/MC3433910G5AC

VSOV - VSUP Over-voltage

This read-only bit indicates an over-voltage condition on

the VS1 pin.

1 = Over-voltage condition.

0 = Normal condition.

VSUV - VSUP Under-voltage

This read-only bit indicates an under-voltage condition on

the VS1 pin.

1 = Under-voltage condition.

0 = Normal condition.

VDDOT - Main Voltage Regulator Over-temperature

Warning

This read-only bit indicates that the main voltage regulator

temperature reached the Over-temperature Prewarning

Threshold.

1 = Over-temperature Prewarning

0 = Normal

BATFAIL - Battery Fail Flag.

This read-only bit is set during power-up and indicates that

the 33910 had a Power-On-Reset (POR).

Any access to the MCR or VSR will clear the BATFAIL flag.

1 = POR Reset has occurred

0 = POR Reset has not occurred

Wake-up Control Register - WUCR

This register is used to control the digital wake-up input.

Writing the WUCR will return the Wake-Up Status Register

(WUSR).

L1WE - Wake-up Input Enable

This write-only bit enables/disables the L1 input. In Stop

and Sleep mode the L1WE bit activates the L1 input for wake-

up. If the L1 input is selected on the analog multiplexer, the

L1WE is masked to 0.

1 = Wake-up Input enabled.

0 = Wake-up Input disabled.

Wake-up Status Register - WUSR

This register is used to monitor the digital wake-up input

and is also returned when writing to the WUCR.

L1 - Wake-up input 1

This read-only bit indicates the status of the L1 input. If the

L1 input is not enabled, then the Wake-up status will return 0.

After a wake-up from Stop or Sleep mode this bit also

allows to verify the L1 input has caused the wake-up, by first

reading the Interrupt Status Register (ISR) and then reading

the WUSR. The source of the wake-up is only reported on the

first WUCR or WUSR access.

1 = L1 pin high, or L1 is the source of the wake-up.

0 = L1 pin low, disabled or selected as an analog input.

Table 14. Wake-up Control Register - $2

Write

L1WE

Reset

Value

Reset

Condition

POR, Reset mode or ext_reset

Table 15. Wake-up Status Register - $2/$3

Read

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33910 Datasheet(PDF) 40 Page - Freescale Semiconductor, Inc

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