LTC

[cui1]

I was reading the MM9Z1J638 data book and found the LTC module. I want to know what he's for.

[lama]

Hi,

6.2.2.4.1.5Wake-up on life time counter overflow
The life time counter continues to run during Low-power mode, if configured. Once the counter overflows with the life time counter wake-up enabled (WULTC=1), a wake-up is issued. The wake-up source is flagged with the WULTC Bit. The Life Time Counter has to be configured in Normal mode only.

WULTCF
Life Time Counter Wake-up Flag. Writing this bit to logic 1 will clear the flag.
0 - n.a.
1 - Last Wake-up was caused by a life time counter overflow

Best regards,

Ladislav

[lama]

Hi,

The timer ca be used for anything you want. The primary design purpose was to provide independent timer which can store running time when the MCU is running. Some customers required it to be able to check running time without stealing another peripheral.

Best regards,

Ladislav

[cui1]

Hello then can I use it as a low power sleep or stop and use it as a wake source. thanks!