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stm32 /stm32n6 /STM32N657 /RTC /RTC_CALR

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Interpret as RTC_CALR

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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 0CALM0 (B_0x0)LPCAL 0 (CALW16)CALW16 0 (CALW8)CALW8 0 (B_0x0)CALP

CALP=B_0x0, LPCAL=B_0x0

Description

RTC calibration register

Fields

CALM

Calibration minus
LPCAL

RTC low-power mode

0 (B_0x0): Calibration window is 2less thansup>20less than/sup> RTCCLK, which is a high-consumption mode. This mode must be set only when less than 32s calibration window is required.

1 (B_0x1): Calibration window is 2less thansup>20less than/sup> ck_apre, which is the required configuration for ultra-low consumption mode.
CALW16

Use a 16-second calibration cycle period
CALW8

Use an 8-second calibration cycle period
CALP

Increase frequency of RTC by 488.5 ppm

0 (B_0x0): No RTCCLK pulses are added.

1 (B_0x1): One RTCCLK pulse is effectively inserted every 2less thansup>11less than/sup> pulses (frequency increased by 488.5 ppm).

Links

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Register Reference

https://github.com/modm-io/cmsis-svd-stm32