Kinetis MicrocontrollersのトピックK82: wakeup due peripherals

K82: wakeup due peripherals

EugeneHiihtaja — Mon, 07 Jan 2019 07:05:25 GMT

Hi !

1. I2C slave has configuration field :

1
WUEN Wakeup Enable
The I2C module can wake the MCU from low power mode with no peripheral bus running when slave
address matching occurs.
0 Normal operation. No interrupt generated when address matching in low power mode.
1 Enables the wakeup function in low power mode.

What means low power mode here ? What exact modes are in mind ?

Do I understand right and this wakeup is transparent for MCU e.g no need any special handlers/interrupts and clean up functions ?

2. WDOG has configuration field:

STOPEN
Enables or disables WDOG in Stop mode.

What STOP mode is mentioned here ?

According MCU specification, all low power mode called stop modes:

STOP
VLPS
LLS2
LLS3
VLLS3
VLLS2
VLLS1
VLLS0

Regards,

Eugene

Re: K82: wakeup due peripherals

kerryzhou — Tue, 08 Jan 2019 07:45:30 GMT

Hi Eugene Hiihtaja,

1. What means low power mode here about I2C slave address match? What exact modes are in mind ?

Please check the K82 reference manual, Table 9-2. Module operation in low power modes (continued)

2. What STOP mode is mentioned here(WDOG ) ?

Wish it helps you!

If you still have question about it, please kindly let me know.

Have a great day,
Kerry

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