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:
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