DIO74506

Version 1.0, May 2026

www.dioo.com

© 2026 Dioo Microcircuits Co., Ltd. Jiangsu

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1. Pin Assignment and Functions

Figure 1. WLCSP16 (Top view)

Pin No.

Pin Name

Description

A1

DAT2A

Data 2 input or output on host side

A2

DAT3A

Data 3 input or output on host side

A3

DAT0A

Data 0 input or output on host side

A4

DAT1A

Data 1 input or output on host side

B1

VCCA

Supply voltage A (host side)

B2

CMDA

Command input or output on host side

B3

CLKFB

Clock feedback signal on host side, this pin can be left floating

B4

CLKA

Clock signal input on host side

C1

VCCB

Supply voltage B (memory card side)

C2

CMDB

Command input or output on memory card side

C3

GND

Supply ground

C4

CLKB

Clock signal input on memory card side

D1

DAT2B

Data 2 input or output on memory card side

D2

DAT3B

Data 3 input or output on memory card side

D3

DAT0B

Data 0 input or output on memory card side

D4

DAT1B

Data 1 input or output on memory card side