CUI DEVICES | MODEL: SD-4-B | DESCRIPTION: SD CARD CONNECTOR

date 10/24/2023 | page 3 of 5

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MECHANICAL DRAWING (CONTINUED)

units: mm

PCB tolerance: ±0.05 mm

Recommended PCB Layout

Top View

PIN CONNECTIONS

PIN

SIGNAL

NAME

TYPE

DESCRIPTION

1

CD/DAT3

I/O/PP

CARD DETECT/DATA LINE (BIT 3)

2

CMD

PP

COMMAND/RESPONSE

3

VSS1

S

SUPPLY VOLTAGE GROUND

4

VDD

S

SUPPLY VOLTAGE

5

CLK

I

CLOCK

6

VSS2

S

SUPPLY VOLTAGE GROUND

7

DAT0

I/O/PP

DATA LINE (BIT 0)

8

DAT1

I/O/PP

DATA LINE (BIT 1)

9

DAT2

I/O/PP

DATA LINE (BIT 2)

10

CD

-

CARD DETECT SWITCH

11

WP

-

WRITE PROTECT

GND

-

-

COVER GROUND

CARD STATUS

WITHOUT CARD

CARD INSERTED

WRITE PROTECT

LOCK

CARD INSERTED

WRITE PROTECT

UNLOCK

WP

GND

CD

GND

WP

GND

CD

GND

WP

GND

CD

GND

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