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STD Nano XUM-1541 Atmega32u2-MU
Mode: Editors' pick
- 3
Update time：
2022-01-29 22:28:53
Creation time：
2020-08-16 11:49:49
Description
Nano version of XUM-1541 C64 floppy drive interface designed to fit into 6 Pin DIN Connector.
Designed to allow the creation of a USB to Commodore 64 Floppy Disk Drive cable.
Will require modified version of XUM1541 Firmware. https://github.com/OpenCBM/OpenCBM/tree/master/xum1541
Design is based on Atmega16U2-MU or Atmega32U2-MU running at 5V/16MHz. http://ww1.microchip.com/downloads/en/DeviceDoc/doc7799.pdf
Update 19/05/2021: Improved schematic, Minor tweaks of PCB layout and added 3D Model of 6-Pin DIN Plug.
This very much still in developement.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 22 | R1,R2 | R0402 | 2 |
| 2 | ATMEGA32U2-MU | U1 | QFN-32_L5.0-W5.0-P0.50-BL-EP3.4 | 1 |
| 3 | 10K | R3 | R0402 | 1 |
| 4 | 16MHz | X1 | OSC-SMD_4P-L3.2-W2.5-BL | 1 |
| 5 | 15pF | C6,C7 | C0402 | 2 |
| 6 | ESD | D1,D2 | D0402 | 2 |
| 7 | USB 5V+ | J1 | 1.5MM X 0.75MM THROUGH HOLE PAD | 1 |
| 8 | USB DATA - | J2 | 1.5MM X 0.75MM THROUGH HOLE PAD | 1 |
| 9 | USB DATA + | J3 | 1.5MM X 0.75MM THROUGH HOLE PAD | 1 |
| 10 | USB GND | J4 | 1.5MM X 0.75MM THROUGH HOLE PAD | 1 |
| 11 | 10uF | C1 | C0402 | 1 |
| 12 | 1uF | C5 | C0402 | 1 |
| 13 | 100nF | C2,C3,C4 | C0402 | 3 |
| 14 | 500ma | F1 | F0603 | 1 |
| 15 | RST | J8 | 1MM ROUND EXPOSED PAD | 1 |
| 16 | GND | J9,J11 | 1MM ROUND EXPOSED PAD | 2 |
| 17 | HWB | J10 | 1MM ROUND EXPOSED PAD | 1 |
| 18 | 6 Pin Din Plug | U2 | CONTACTS FOR 6 PIN DIN | 1 |
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