CC-BY-NC-SA 3.0
Connect an Atmega to a C64 via the Commodore Serial Bus.
Attention! Remember that you either have to supply an oscillator (leave JP1 open) or configure the MCP2221 to output a clock signal (short the jumper JP1 in that case). Make also sure that the fuses of the Atmega are set correctly.
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | AVR_SPI_PROG | J2 | AVR_ICSP | 1 |
| 2 | HDR-F-2.54_1x2 | H1 | HDR-F-2.54_1X2 | 1 |
| 3 | 22pF | C4,C5 | RAD-0.1 | 2 |
| 4 | USB | JP2 | USB-B-PTH | 1 |
| 5 | HEADER_6 | J1 | HDR-M-2.54_1X6 | 1 |
| 6 | Jumper | JP1 | JUMPER2 | 1 |
| 7 | MCP2221A-I/ST | U2 | PDIP-14 | 1 |
| 8 | LED-TH-5mm_R | LED3 | LED-TH_BD5.0_RED | 1 |
| 9 | Header-Male-2.54_1x4 | H2 | HDR-TH_4P-P2.54-V | 1 |
| 10 | ATMEGA88-20PU | U1 | DIP-28_L34.6-W7.3-P2.54-LS10.2-BL | 1 |
| 11 | 10k | R1 | R_AXIAL-0.4 | 1 |
| 12 | LED-TH-5mm_G | LED1,LED2 | LED-TH_BD5.0_GREEN | 2 |
| 13 | 100nF | C1,C2 | CAP-9.5*11.5*5 | 2 |
| 14 | 470nF | C3 | CAP-9.5*11.5*5 | 1 |
| 15 | CRYSTAL | Q1 | HC49US | 1 |
| 16 | 680 | R2,R3,R4 | R_AXIAL-0.4 | 3 |
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