HD6309 computer
About the HD6309 computer PCB
HD6309 computer 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 133 × 82 mm, with 45 components from 24 distinct parts.
Other key parts include the HD63C09, ATF16V8B, 12 MHz osc, 74HC541 and 74HCT245. By type, the board carries 12 ICs, 12 capacitors, 11 resistors, 5 connectors, 3 diodes and 1 transistor.
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 HD6309 computer
HD6309 computer bill of materials (BOM)
45 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HD63C09 | DIP-40_W15.24mm_LongPads | U1 |
| 2 | ATF16V8B | DIP-20_W7.62mm_LongPads | U2, U4 |
| 1 | 12 MHz osc | OSCSMD7x5 | U3 |
| 2 | 74HC541 | SOIC-20W_7.5x12.8mm_Pitch1.27mm | U5, U8 |
| 1 | 74HCT245 | SOIC-20W_7.5x12.8mm_Pitch1.27mm | U6 |
| 1 | 74HC574 | SOIC-20W_7.5x12.8mm_Pitch1.27mm | U7 |
| 1 | 7.3728 MHz | OSCSMD7x5 | U9 |
| 1 | AS6C8008 | TSOP-II_44pin_W400mil | U10 |
| 1 | SC16C550B | LQFP-48_7x7mm_Pitch0.5mm | U11 |
| 1 | AT28C64B | DIP-28_W15.24mm_LongPads | U12 |
| 1 | 2N3904 | TO-92_Inline_Wide | Q1 |
| 1 | USB_B | USB_B | P1 |
| 1 | CONN_01X02 | Pin_Header_Straight_1x02_Pitch2.54mm | P2 |
| 1 | CONN_01X08 | Pin_Header_Straight_1x08_Pitch2.54mm | P3 |
| 1 | CONN_01X10 | Pin_Header_Straight_1x10_Pitch2.54mm | P4 |
| 1 | CONN_01X05 | Pin_Header_Straight_1x05_Pitch2.54mm | P5 |
| 1 | SW_PUSH_SMALL_H | SW_PUSH_6mm | SW1 |
| 3 | LED | LED_D3.0mm_centered | D1, D2, D3 |
| 1 | 10u | CP_Elec_6.3x5.3 | C1 |
| 1 | 1u | CP_Elec_6.3x5.3 | C2 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 10 | 100n | C_0805_HandSoldering | C3, C4, C5, C6, C7, C8, C9, C10 +2 |
| 7 | 10k | R_0805_HandSoldering | R1, R2, R3, R5, R6, R7, R8 |
| 3 | 330 | R_0805_HandSoldering | R4, R9, R10 |
| 1 | 4k7 | R_0805_HandSoldering | R11 |
HD6309 computer 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.
HD6309 computer: common questions
How big is the HD6309 computer PCB?
The HD6309 computer measures 133 × 82 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the HD6309 computer?
45 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the HD6309 computer 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 HD6309 computer design in my own project?
Yes, under the terms of its CERN-OHL-1.2 license, which trcwm chose for the repository.
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