C.6.3. Real-time clock

The Real-Time Clock (RTC) comprises the following elements:

The 32-bit counter increments on successive rising edges of a 1Hz clock generated by the IM-LT3 FPGA. You load a start value by writing to the load register RTC_LR and read the current value of the counter from the data register RTC_DR.

You program a match register by writing to the match register RTC_MR and you can read the current value at any time. When the counter and match register contents are identical, an interrupt request is asserted.

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