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HD6309 Singleboard Computer II

Yep, another one! But this time with more modern devices, fewer parts, and a smaller form-factor

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The same HD63C09E from my previous project, but 256KB of SRAM and a significant CPLD upgrade to MAX10. This allows eliminating the Zilog SCC and CIO chips that I used previously. An onboard 5V DC-DC converter and 3.3V LDO allow this SBC to be powered from 6-16V input, in addition to allowing USB power. Two VCP comfortably support NoICE debugger and console I/O. Finally, the obsolete Epson RTC chip is replaced with a DS3231M. The goal is semi-compatibility with the SBC V1.0.

hd6309sbc_v2_bom.csv

Bill of Materials of SBC V2 in CSV format

ms-excel - 8.15 kB - 07/10/2020 at 19:16

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hd6309sbc_v2_pcb.pdf

PDF of SBC V2 PCB copper and assembly info

Adobe Portable Document Format - 637.44 kB - 07/10/2020 at 19:16

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hd6309sbc_v2_schematic.pdf

PDF of SBC V2 schematic

Adobe Portable Document Format - 292.69 kB - 07/10/2020 at 19:16

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