CUI DEVICES | MODEL: MSD4-2-A | DESCRIPTION: MICRO SD 4.0 CARD CONNECTOR

date 10/26/2023 | page 3 of 5

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MECHANICAL DRAWING (CONTINUED)

units: mm

PCB tolerance: ±0.05 mm

Recommended PCB Layout

Top View

CARD STATUS

WITHOUT CARD

HALF INSERTION

CARD INSERTED

P6

P9

P6

P9

P6

P9

PIN CONNECTIONS

CONNECTOR

PIN#

MSD CARD

PIN#

SIGNAL

NAME

TYPE

DESCRIPTION

P1

1

DAT2

I/O

DATA LINE (BIT 2)

P2

2

CD/DAT3

I/O

CARD DETECT/DATA LINE (BIT 3)

P3

3

CMD

I/O

COMMAND/RESPONSE

P4

4

VDD1

S

SUPPLY VOLTAGE (3.3 V)

P5

5

CLK

I

CLOCK

P6

6

VSS

S

SUPPLY VOLTAGE GROUND

P7

7

DAT0/RCLK+

I/O

DATA LINE (BIT 0)/RCLK+

P8

8

DAT1/RCLK+

I/O

DATA LINE (BIT 1)/RCLK-

P9

CD

CD

-

CARD DETECT SWITCH

P10~P14

GND

-

-

COVER GROUND

P15

9

VDD2

S

SUPPLY VOLTAGE (1.8 V)

P16

17

SWIO

I

SINGLE WIRE PROTOCOL INTERFACE

P17

10

VSS

S

SUPPLY VOLTAGE GROUND

P18

11

D0+

I/O

UHS-II D0+

P19

12

D0-

I/O

UHS-II D0-

P20

13

VSS

S

SUPPLY VOLTAGE GROUND

P21

14

D1-

I/O

UHS-II D1-

P22

15

D1+

I/O

UHS-II D1+

P23

16

VSS

S

SUPPLY VOLTAGE GROUND

Additional Resources: Product Page | 3D Model | PCB Footprint