Part 3.15: Real-Time Clock - Alinx ZYNQ UltraScale+ User Manual

ZYNQ Ultrascale + FPGA Board AXU9EG User Manual
Figure 3-14-1: JTAG Interface Schematic

Part 3.15: Real-time Clock

The ZU9EG chip has the function of an RTC real-time clock, with timing
functions such as year, month, day, hour, minute, and second, and week.
External need to connect a 32.768KHz passive clock to provide an accurate
clock source to the internal clock circuit, so that the RTC can accurately provide
clock information. At the same time, in order for the real-time clock to operate
normally after the product is powered off, it is generally necessary to equip the
(model LR1130, voltage is 5V) to supply power to the clock chip.
coin battery
The BT1 on the development board is a battery Socket. After we put the coin
battery, even the system is off, the coin battery can also power the RTC system
and provide continuous time information.
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