使用 Seeed Technology Co.,Ltd 的 DS3231 的参考设计 ,103030278，高精度 Pi RTC (DS3231) 实时时钟 (RTC) 评估板——

使用 Seeed Technology Co.,Ltd 的 DS3231 的参考设计

newrudeman 发布

103030278，高精度 Pi RTC 板基于时钟芯片 DS3231，DS3231 是一款低成本、极其精确的 I2C 实时时钟 (RTC)。它可以通过UART接口为树莓派提供实时时钟（RTC）。 RTC 的时钟源来自 TCXO（温度补偿晶体振荡器），可提供秒、分、小时、日、日期、月和年信息。对于少于 31 天的月份，月底的日期会自动调整，包括闰年的更正。时钟以 24 小时或 12 小时格式运行，并带有 AM/PM 指示器。该时钟提供两个可编程的时钟闹钟和一个可编程的方波输出。 INT/SQW 引脚要么因报警条件而产生中断，要么输出方波信号，选择由 INTCN 位控制

说明

103030278, High Accuracy Pi RTC Board is based on the clock chip DS3231, the DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC). It can provide a real-time clock (RTC) for raspberry pi via the UART interface. With the clock source from the TCXO (temperature compensated crystal oscillator), the RTC provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. The clock provides two programmable time-of-day alarms and a programmable square-wave output. The INT/SQW pin either generates an interrupt due to alarm condition or outputs a square-wave signal and the selection is controlled by the bit INTCN

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