Sdcard
About the Sdcard PCB
Sdcard is an open source PCB design by trcwm, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 49 × 53 mm, with 12 components from 10 distinct parts.
Other key parts include the 74LVX574, 74HCT541 and LM1117-3.3. By type, the board carries 3 ICs, 3 connectors, 3 capacitors, 2 resistors and 1 diode.
It belongs with the retro computing designs in this gallery.
From the project
A computer based on the HD6309 CPU, done for the Retro Challenge 2017/04.
Read the blog: https://namoseley.wordpress.com/category/retrochallenge/
Features: HD6309 CPU Binary compatible to MC6809 ..but faster instruction execution, ..extended registers, ..additional instructions, and lots more! 1MB of RAM: mapped in 32K pages at 0x0000 .. 0x7FFF fixed page at 0x8000 .. 0xDFFF 2KB of IO space: SC16C550B UART at 0xE000 8-bit expansions port at 0xE010(untested!) Memory map register: 5-bit entry sets A15..A19 on RAM reg at address 0xE800 4KB of ROM: Memory check SREC loader
Main components on the Sdcard
Sdcard bill of materials (BOM)
12 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LVX574 | SOIC-20W_7.5x12.8mm_P1.27mm | U1 |
| 1 | 74HCT541 | SOIC-20W_7.5x12.8mm_P1.27mm | U2 |
| 1 | LM1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J1 |
| 1 | Conn_01x10 | PinHeader_1x10_P2.54mm_Vertical | J2 |
| 1 | SD_Card | SD_TE_2041021 | J3 |
| 1 | LED_Small | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 3 | 100n | C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2, C3 |
| 1 | 470 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 10k | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R9 |
Sdcard design files
The KiCad project lives in the trcwm/HD6309-Computer repository on GitHub; these links point at the commit this page was built from.
Sdcard: common questions
How big is the Sdcard PCB?
The Sdcard measures 49 × 53 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Sdcard?
12 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the Sdcard design files?
From the trcwm/HD6309-Computer repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Sdcard design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which trcwm chose for the repository.
More boards in HD6309-Computer
Similar boards
Expansion Card Retrofit
FrameworkComputer
24 × 27.3 mm5 parts2LCC-BY-4.01.1k
Rgb to hdmi
hoglet67
77 × 97 mm67 parts2LGPL-3.01.0k
Buffer
53.9 × 23.2 mm13 parts2LGPL-3.01.0k
X1
121.9 × 81.3 mm51 parts2LGPL-3.01.0k
Amiga External
21.9 × 76.7 mm6 parts2LGPL-3.01.0k
Videoslotadapter
152 × 57.6 mm13 parts2LGPL-3.01.0k