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Real-time clock made by STC90C54RD+SD2405ALPI

Overview

I have an SD2405ALPI-G on hand, and I happen to have an STC learning board, so I made a clock with an annual error of about 2.5 minutes to play with. The schematic and program are all there. Now the hardware has a ringtone generating chip and a power amplifier chip, but the program has only initially implemented the function of displaying the day of the week, hours, minutes and seconds. It will be changed to an alarm clock when there is time.

Design Files

Real-time clock made by STC90C54RD+SD2405ALPI

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Update:2024-11-22 12:04:15

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