Datasheet PI4ULS3V4857 (Diodes) - 3

A product Line of Diodes Incorporated
PI4ULS3V4857 Pin Configuration (Top-Side View)
1 2 3 4 A B C D E
Pin Description Pin # Pin Name Type Description
A1 DAT2A I/O Data 2 input or output on host side A2 VCCA Pwr Supply voltage from host side A3 VSD Pwr Supply voltage A4 DAT2B I/O Data 2 input or output on memory card side B1 DAT3A I/O Data 3 input or output on host side B2 CD O High voltage output (refer to VCCA) B3 VCCB Pwr Internal supply decoupling (VLDO) B4 DAT3B I/O Data 3 input or output on memory card side C1 CMDA I/O Command input or output on host side C2 GND Pwr Supply ground C3 GND Pwr Supply ground C4 CMDB I/O Command input or output on memory card side D1 DAT0A I/O Data 0 input or output on host side D2 CLKA I Clock signal input on host side D3 CLKB O Clock signal output on memory card side D4 DAT0B I/O Data 0 input or output on memory card side E1 DAT1A I/O Data 1 input or output on host side E2 CLK_FB O Clock feedback output on host side E3 SEL I Card side I/O voltage level select E4 DAT1B I/O Data 1 input or output on memory card side
Note:
1. The pin names relate particularly to SD memory cards, but also apply to microSD and MMC memory cards. 2. I = input, O = output, I/O = input and output, S = power supply PI4ULS3V4857 www.diodes.com August 2020 Document Number DS42310 Rev 2-2 3 Diodes Incorporated