33903 datasheet(87/104 Pages) FREESCALE

87 / 104 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33903/4/5

SERIAL PERIPHERAL INTERFACE

FLAGS AND DEVICE STATUS

INT

INT request

Description

Report that INT source is an INT request from a SPI command.

Set / Reset condition

Set: INT occurred. Reset: flag read (SPI)

RST high

Description

Report that RST pin is shorted to high voltage.

Set / Reset condition

Set: RST failure detection. Reset: flag read.

DBG resistor

Description

Report that the resistor at DBG pin is different from expected (different from SPI register content).

Set / Reset condition

Set: failure detected. Reset: correct resistor and flag read (SPI).

VDD TEMP PRE-

WARNING

Description

Report that the VDD has reached over-temperature pre-warning threshold.

Set / Reset condition

Set: VDD thermal sensor above threshold. Reset: VDD thermal sensor below threshold and flag read

(SPI)

VDD UV

Description

Reports that VDD pin is lower than the VDDUV threshold.

Set / Reset condition

Set: VDD below threshold for t >100

μs typically. Reset: VDD above threshold and flag read (SPI)

VDD OVER-

VOLTAGE

Description

Reports that VDD pin is higher than the typically VDD + 0.6 V threshold. I/O-1 can be turned OFF if

this function is selected in INIT register.

Set / Reset condition

Set: VDD above threshold for t >100

μs typically. Reset: VDD below threshold and flag read (SPI)

VAUX_OVER-

VOLTAGE

Description

Reports that VAUX pin is higher than the typically VAUX + 0.6 V threshold. I/O-1 can be turned OFF if

this function is selected in INIT register.

Set / Reset condition

Set: VAUX above threshold for t >100 μs typically. Reset: VAUX below threshold and flag read (SPI)

VDD LOW

>100 ms

Description

Reports that VDD pin is lower than the VDDUV threshold for a time longer than 100 ms

Set / Reset condition

Set: VDD below threshold for t >100 ms typically. Reset: VDD above threshold and flag read (SPI)

VDD LOW

Description

Report that VDD is below VDD under-voltage threshold.

Set / Reset condition

Set: VDD below threshold. Reset: fag read (SPI)

VDD (5.0 V or

3.3 V)

Description

0: mean 3.3V VDD version

1: mean 5V VDD version

Set / Reset condition

N/A

Device P/N1

and 0

Description

Describe the device part number:

00: MC33903

01: MC33904

10: MC33905S

11: MC333905D

Set / Reset condition

N/A

Device id 4 to

Description

Describe the silicon revision number

10001: silicon revision 3.0

10010: silicon revision 3.1

10011: silicon revision 3.2

Set / Reset condition

N/A

RST low

>100 ms

Description

Report that the RESET pin has detected a low level, longer than 100 ms (Reset permanent low)

Set / Reset condition

Set: after detection of reset low pulse. Reset: Reset pulse terminated and flag read (SPI)

Multiple

Resets

Description

Report that the more than 8 consecutive reset pulses occurred, due to missing or wrong watchdog

refresh.

Set / Reset condition

Set: after detection of multiple reset pulses. Reset: flag read (SPI)

watchdog

refresh failure

Description

Report that a wrong or missing watchdog failure occurred.

Set / Reset condition

Set: failure detected. reset: flag read (SPI)

Table 38. Flag Descriptions

Flag

Description

33903 Datasheet(PDF) 87 Page - Freescale Semiconductor, Inc

33903 Datasheet(HTML) 87 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL