Doc ID 018624 Rev 5 19/45 Overview of the STM32 advanced RTC AN3371 1.6 Note: RTC reference clock detection The reference clock (at 50 Hz or 60 Hz) should have a higher precision than the 32.768 kHz LSE clock.
注意:如果 APB1 时钟的频率低于 7 倍的 RTCCLK 频率,则必须将 BYPSHAD 置“ 1 ”。 位4 REFCKON:**参考时钟检测使能(50 Hz 或 60 Hz)(Reference clock detection enable (50 or **60 Hz)) 0:禁止参考时钟检测 1:使能参考时钟检测 注意:PREDIV_S 必须为 0x00FF 。 位3 TSEDGE:时间戳事件有效边...
注意:如果 APB1 时钟的频率低于 7 倍的 RTCCLK 频率,则必须将 BYPSHAD 置“ 1 ”。 位4 REFCKON:参考时钟检测使能(50 Hz 或 60 Hz)(Reference clock detection enable (50 or 60 Hz)) 0:禁止参考时钟检测 1:使能参考时钟检测 注意: PREDIV_S 必须为 0x00FF 。 位3 TSEDGE:时间戳事件有效边沿 (...
Tamper detection by erasing backup registers Timestamp for the tampering event RTC usage in Stop mode Smooth digital calibration RTC clock synchronization Reference clock detection Internal tamper detection 阅读更多阅读较少信息 获取软件 意法半导体中国...
位 4 REFCKON：参考时钟检测使能（50 Hz 或 60 Hz）(Reference clock detection enable (50 or60 ...
STM32L4实时时钟模块(RTC)介绍
A system for securing a real-time clock (RTC) of an electronic device includes a RTC counter that counts clock pulses of a RTC signal generated by a crystal oscillator, and a reference-time register that periodically stores a reference time value generated by a network-clock generator. A ...
(RTC) 1 Features •1 Automatic Switchover to Backup Supply • I2C Interface Supports Serial Clock up to 400 kHz • Uses 32.768-kHz Crystal With –63-ppm to +126-ppm Adjustment • Integrated Oscillator-Fail Detection • 8-Pin SOIC Package • –40°C to 85°C Ambient Operating ...
options.typing_detection = true; options.experimental_agc = false; options.extended_filter_aec = false; options.delay_agnostic_aec = false; options.experimental_ns = false; options.residual_echo_detector = true; bool error = ApplyOptions(options); RTC_DCHECK(error); } initialized_ = true; ...
检测是否处于kWaitingForProbingResult,如果是则说明需要进一步探测(further detection), 将新设进来的预估码率判断是否大于最低进一步探测码率(min_bitrate_to_probe_further_bps), 如果是则将它乘以一个变换系数后去生成probe config 判断新设的码率是否比旧码率小很多,如果是, 则标记发生了大的跌落(large_drop), 如...