To provide a solution to MMC cards, SMIC18_MMC_07E_4IN1 is consolidated by four independent IPs: SMIC18_PRG_03E_33T18V60_160mA, SMIC18_ROSC_01E_48M, SMIC18_VDT_01C_1P5V2P5V and SMIC18_POR_02_1P8V. It can provide two regulated 1.8v output voltages, monitor the rising of supply voltage and detect the supply voltage. Also an on chip ring oscillator is built in.