mcb2400-schematics+3V3 D1 4448 D2 4448 C2 22uF/10V GND + VBAT C1 100nF GND VREF C4 100nF K2 L2 RTCX1 RTCX2 K1 M3 G4 J2 VBAT_IN +3V3 U1 LPC2468 VREF VBAT VDDA VSSA LPC2468 CPU P0.0/RD1/TXD3/SDA1 P0.1/TD1/RXD3/SCL1 P0.2/TXD0 P0.3/RXD0 P0.4/I2SRX_CLK/RD2/CAP2.0 P0.5/I2SRX_WS/TD2/CAP2.1 P0.6/I2SRX_SDA/SSEL1/MAT2.0 P0.7/I2STX_CLK/SCK1/MAT2.1 P0.8/I2STX_WS/MISO1/MAT2.2 P0.9/I2STX_SDA/MOSI1/MAT2.3 P0.10/TXD2/SDA2/MAT3.0 P0.11/RXD2/SCL2/MAT3.1 P0.12/PORT_PWR_B/MISO1/AD0.6 P0.13/LED_B/MOSI1/AD0.7 P0.14/HOST_EN_B/DEVICE_EN_B/SSEL1 P0.15/TXD1/SCK0/SCK P0.16/RXD1/SSEL0/SSEL P0.17/CTS1/MISO0/MISO P0.18/DCD1/MOSI0/MOSI P0.19/DSR1/MCICLK/SDA1 P0.20/DTR1/MCICMD/SCL1 P0.21/RI1/MCIPWR/RD1 P0.22/RTS1/MCIDAT0/TD1 P0.23/AD0.0/I2SRX_CLK/CAP3.0 P0.24/AD0.1/I2SRX_WS/CAP3.1 P0.25/AD0.2/I2SRX_SDA/TXD3 P0.26/AD0.3/AOUT/RXD3 P0.2……