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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/959954/tm4c1294ncpdt-rtc-issue
TM4C1294ncpdt 是否具有集成 RTC 电路？我的外部电路如何支持 RTC？ 我需要绘制哪些引脚？
是的、从 数据表的第7.3.5节开始对其进行了说明。 它需要 32.768kHz 晶振。 系统设计指南 从第26页开始介绍了32.768kHz 晶振的实现方法。
