B转换芯片与单片机连接 5V 10 139 18 Po DBO VCC CLKR 38 17 P0.1 DB 1 37 16 10K P0.2 DB2 36 15 P DB 3 CLKI 150P 14 P0.4 35 DB4 34 13 DGND 10 0.5 DB5 80310632 12 AGND DB 6 Po DB7 RD RD 限R WR 13 FER P 2.0 CS DC0801B 转换芯片与单片机连接