Am9511AAddon
About the Am9511AAddon PCB
Am9511AAddon is an open source PCB design by ja1umi, published on GitHub under the MIT license. It is a 2-layer board measuring 72 × 47 mm, with 19 components from 12 distinct parts.
Other key parts include the 74HCT04, 74HCT573, 74HCT574, 74HCT00 and XTAL OSC 3.0 MHz. By type, the board carries 7 capacitors, 6 ICs, 2 connectors, 2 jumpers and 2 resistors.
It belongs with the retro computing designs in this gallery.
From the project
Various design materials for building my 8-bit-microprocessor-based single board computer(s)
This daughterboard is designed to add the functionlity of AMD Am9511A Arithmetic co-processor to MUTIF09 6809 SBC.
I have been wanting to experience how arithmetic co-processor programming looks like. For this purpose, Am9511A sounds good because the dataseet says "...The Am9511A APU is designed with a general purpose 8-bit data bus and interface control so that it can be conveniently used with any general 8-bit processor." (ok. I should have realized the old saying: there is no rule without some exceptions). So, at first, I designed to connect Am9511A directly to the data bus of 6809…
Main components on the Am9511AAddon
Am9511AAddon bill of materials (BOM)
19 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HCT04 | DIP-14_W7.62mm | U1 |
| 1 | 74HCT573 | DIP-20_W7.62mm | U2 |
| 1 | 74HCT574 | DIP-20_W7.62mm | U3 |
| 1 | 74HCT00 | DIP-14_W7.62mm | U4 |
| 1 | XTAL OSC 3.0 MHz | DIP-8_W7.62mm | U5 |
| 1 | Am9511A-1DC | DIP-24_W15.24mm | U6 |
| 1 | Conn_02x12 | DIP-24_W15.24mm | J1 |
| 1 | Conn_01x06 | Pin_Header_Straight_1x06_Pitch2.54mm | J2 |
| 1 | Clock Selection | Pin_Header_Straight_1x03_Pitch2.54mm | JP1 |
| 1 | Pullup_Enable | Pin_Header_Straight_1x02_Pitch2.54mm | JP2 |
| 7 | 0.1u | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7 |
| 2 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
Am9511AAddon design files
The KiCad project lives in the ja1umi/MUTIF09Project repository on GitHub; these links point at the commit this page was built from.
Am9511AAddon: common questions
How big is the Am9511AAddon PCB?
The Am9511AAddon measures 72 × 47 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Am9511AAddon?
19 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Am9511AAddon design files?
From the ja1umi/MUTIF09Project repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Am9511AAddon design in my own project?
Yes, under the terms of its MIT license, which ja1umi chose for the repository.
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