Freescale Semiconductor /MK21D5WS /RTC /CR

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as CR

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (0)SWR 0 (0)WPE 0 (0)SUP 0 (0)UM 0 (RESERVED)RESERVED 0 (0)OSCE 0 (0)CLKO 0 (0)SC16P 0 (0)SC8P 0 (0)SC4P 0 (0)SC2P 0 (RESERVED)RESERVED 0 (RESERVED)RESERVED

SC16P=0, SC8P=0, WPE=0, UM=0, CLKO=0, SUP=0, SC4P=0, OSCE=0, SC2P=0, SWR=0

Description

RTC Control Register

Fields

SWR

Software Reset

0 (0): No effect.

1 (1): Resets all RTC registers except for the SWR bit and the RTC_WAR and RTC_RAR registers . The SWR bit is cleared by POR and by software explicitly clearing it.

WPE

Wakeup Pin Enable

0 (0): Wakeup pin is disabled.

1 (1): Wakeup pin is enabled and wakeup pin asserts if the RTC interrupt asserts or the wakeup pin is turned on.

SUP

Supervisor Access

0 (0): Non-supervisor mode write accesses are not supported and generate a bus error.

1 (1): Non-supervisor mode write accesses are supported.

UM

Update Mode

0 (0): Registers cannot be written when locked.

1 (1): Registers can be written when locked under limited conditions.

RESERVED

no description available

OSCE

Oscillator Enable

0 (0): 32.768 kHz oscillator is disabled.

1 (1): 32.768 kHz oscillator is enabled. After setting this bit, wait the oscillator startup time before enabling the time counter to allow the 32.768 kHz clock time to stabilize.

CLKO

Clock Output

0 (0): The 32 kHz clock is output to other peripherals.

1 (1): The 32 kHz clock is not output to other peripherals.

SC16P

Oscillator 16pF Load Configure

0 (0): Disable the load.

1 (1): Enable the additional load.

SC8P

Oscillator 8pF Load Configure

0 (0): Disable the load.

1 (1): Enable the additional load.

SC4P

Oscillator 4pF Load Configure

0 (0): Disable the load.

1 (1): Enable the additional load.

SC2P

Oscillator 2pF Load Configure

0 (0): Disable the load.

1 (1): Enable the additional load.

RESERVED

no description available

RESERVED

no description available

Links

()