Hello,
| want to make UART in deep sleep on TIVA.
Main question you can see in https://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/t/610962
But I'm little confused about Internal Low Frequency Oscillator Clock Characteristics.
First i see that accuracy about some percents.
Low-Frequency Internal Oscillator (LFIOSC). The Low-Frequency Internal Oscillator (LFIOSC) provides a nominal frequency of 33 kHz with percentage variance specified in the Electrical Characteristics section. It is intended for use during Deep-Sleep power-saving modes. This power-savings mode provides reduced internal switching and the ability to power down the MOSC and/or PIOSC while in Deep-Sleep mode through configuration of the Deep Sleep Clock Configuration Register (DSCLKCFG) register.
But later I see absolutely different situation. Clock can variate up to 3 time in both ways:
As you understand I can't clock UART from source with such huge variability because it's very clock depended interface.
Can you clarify, what is real LFIOSC accuracy? It's required for proper UART configuration.
p.s. first time I think, that HIBLFIOSC can be configured in range [10..90 kHz], but I didn't find anything confirming it.
