microSD breakout board

Size

uSD cards is quite thin a 0.8mm laminate should be just fine (uSD cards is 1mm at it thickest place). A regular card is 11mm by 15mm, so a printout should be 11mm wide where the card get wider after the cuts on the side.

Pin desciption

Start counting from the cut corner.

uSD		JZ4720
Pin	Port	GPIO	Pin
1	DATA2	PD12	79
2	DATA3	PD13	78
3	CMD	PD08	83
4	VDD			Controlled by PD02 / pin 154
5	CLK	PD09	82
6	VSS/(GND)
7	DATA0	PD10	81
8	DATA1	PD11	80

Capacitance

8 strand 50mil pitch ribbon wire soldered to 50mil breakout board and a 100mil pin head (unused wires hanging in air).

Lenght	D11-D12	D11-D13	D11-D08	D11-VDD	D11-D09	D11-VSS	D11-D10
20cm	1.5pF	1.5pF	2pF	2.5pF	3pF	4pF	6pF

Files:

Filename	Description	License	Updated
sd.svg	Layout and shape(no rounded corners) of uSD in SVG	CC BY-SA
legend.svg	Legend in SVG for port names, so you know what you connect where.	CC BY-SA
microsd.lbr	Eagle library with uSD card connector	CC BY-SA	2010-09-02 14:11
ribbon.lbr	Eagle library with 50mil(1.27mm) pitch ribbon connector	CC BY-SA
breakout.sch	Eagle scematics for breakout board	CC BY-SA	2010-09-02 14:11
breakout.brd	Eagle board layout for breakout board	CC BY-SA	2010-09-02 14:11
breakout_50mil.sch	Eagle scematics for breakout board with 50mil pads	CC BY-SA	2011-01-27
breakout_50mil.brd	Eagle board layout for breakout board with 50mil pads	CC BY-SA	2011-01-27
50-100mil.sch	Eagle scematics for 50mil to 100mil board	CC BY-SA
50-100mil.brd	Eagle layout for 50mil to 100mil board	CC BY-SA

Links:

KiCad library with uSD foot print, and more (by Werner Almesberger).
uSD pcb with LEDs, and software to controll them (by Werner Almesberger).

Images:

All images might not be listed here, take a look at the gallery for more.

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