I use HT1621B for the first time to drive 4-bit 8-segment LCD, how to control with single-chip microcomputer? Where D0~D3, A0~A5 each represent the meaning? Thank you?

The cs port, wr port and date port of HT1621 chip are connected to the three output ports of 51 MCU. vss and vdd are connected, and vlcd is connected to the clock end of the sliding rheostat. Just pick it up