Hannes512
SukkoPera·Hannes512
About the Hannes512 PCB
Hannes512 is an open source PCB design by SukkoPera, published on GitHub. It is a 2-layer board measuring 54.3 × 72.2 mm, with 24 components from 16 distinct parts.
Other key parts include the MOS_7360_TED, AS6C4008, 74HCT02, NE555 and 74HCT573. By type, the board carries 9 ICs, 7 capacitors, 4 resistors and 3 connectors.
It belongs with the retro computing designs in this gallery.
From the project
512 kB RAM Expansion for the Commodore 16/+4
It was pretty obvious that switching to a modern SRAM would alleviate both issues, so I went looking for modern chips I could use and the Alliance AS6C4008 turned out to be a perfect match. Besides, it is 512 kB so I even went beyond the original goals and made all of that available to the C16 (even though that can create incompatibilities, see below).
One exception is that I reintroduced the ESD protection diodes for the TED that were featured in Fixteen. They are U8 and U9 and they are optional.

Main components on the Hannes512
Hannes512 bill of materials (BOM)
24 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MOS_7360_TED | DIP-48_W15.24mm_Socket_LongPads | U1 |
| 1 | AS6C4008 | DIP-32_W15.24mm_Socket_LongPads | U2 |
| 1 | 74HCT02 | SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | NE555 | SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | 74HCT573 | SO-20_5.3x12.6mm_P1.27mm | U5 |
| 1 | 74HCT245 | SO-20_5.3x12.6mm_P1.27mm | U6 |
| 1 | GAL20V8 | DIP-24_W7.62mm_Socket | U7 |
| 2 | DT1042 | TSOP-6_1.65x3.05mm_P0.95mm | U8, U9 |
| 1 | TED_SOCKET | DIP-48_W15.24mm_LongPads_ModSilkS | J0 |
| 1 | CONN_CS | PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | RAM_SELECTOR | PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | CC_LOGO | cc_by_nc_sa | V1 |
| 6 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C4, C5, C6, C7 |
| 1 | 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 2 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2 |
| 2 | 1k | R_Array_Convex_4x0603 | RN1, RN2 |
Hannes512 design files
The KiCad project lives in the SukkoPera/Hannes512 repository on GitHub; these links point at the commit this page was built from.
- LayoutHannes512.kicad_pcb
Hannes512: common questions
How big is the Hannes512 PCB?
The Hannes512 measures 54.3 × 72.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hannes512?
24 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the Hannes512 design files?
From the SukkoPera/Hannes512 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Hannes512 design in my own project?
The repository has no license, so all rights stay with SukkoPera. Use it as a reference, and ask the author before reusing the design.
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