33989 datasheet(57/66 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33989

TYPICAL APPLICATIONS

SUPPLEMENTAL APPLICATION NOTES

How to Enter in Sleep Mode

Figure 56. Enter Sleep Mode

How to Enter in Stop Mode with Watchdog

Figure 57. Enter Stop Mode with Watchdog

How to Enter in Stop Mode without Watchdog

Figure 58. Enter Stop Mode without Watchdog

• Bit NoStop=»1»: sleep mode is allowed

• SBC and CAN module go to sleep mode

it will sleep on the rising edge of CS

SBC in normal or

Standby

SBC in Sleep

Write RCR= $34

Write MCR =$14

• Bit NoStop=»0»: sleep mode is disabled

• SBC is in stop mode VDD1 cannot deliver more than 10 mA &

CAN module is in sleep mode.

it will sleep on the rising edge of CS

•The SBC has to wake-up before the watchdog selected

by:SPI, CAN, Lx, Force wake-up.

SBC in normal or

Standby

SBC in Stop

Write RCR =$38

Wake-up event

Write MCR =$13

• Bit NoStop=»0»: sleep mode is disabled

• SBC goes into Stop mode & CAN module

goes into sleep mode

it will sleep on the rising edge of CS

SBC in normal or

Standby

SBC in Stop

Write RCR =$30

Write MCR =$13

33989 Datasheet(PDF) 57 Page - Freescale Semiconductor, Inc