Tom80
About the Tom80 PCB
Tom80 is an open source PCB design by anjennings, published on GitHub under the MIT license. It is a 2-layer board measuring 135 × 100 mm, with 49 components from 30 distinct parts.
Other key parts include the Z8-L180-S180-180-PQFP-80, GAL16V8, 74HCT273, 14.7456 MHz and LM555XM. By type, the board carries 17 capacitors, 13 resistors, 10 ICs, 4 connectors, 4 diodes and 1 switch.
It belongs with the usb & debug tools designs in this gallery.
From the project
-See V2.0, differences listed here -400k usable ram 8x48k banks and 16k fixed common memory, CPU sees 64k at all times but lower 48k can be swapped around
-See V2.0, differences listed here -400k usable ram 8x48k banks and 16k fixed common memory, CPU sees 64k at all times but lower 48k can be swapped around
2B is the "definitive" version so all code going forward is designed for that version of the board. Minor hardware differences mean that code for 2.0 may not work on 2.0B without tweaks (mostly related to ram banking)
Main components on the Tom80
Tom80 bill of materials (BOM)
49 components, 30 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z8-L180-S180-180-PQFP-80 | Z8018008FSG | U2000 |
| 1 | GAL16V8 | DIP-20_W7.62mm_Socket_LongPads | U2001 |
| 1 | 74HCT273 | SOIC-20W_7.5x12.8mm_P1.27mm | U2002 |
| 1 | 14.7456 MHz | Oscillator_DIP-14 | U2003 |
| 1 | LM555XM LM555xM | SOIC-8_3.9x4.9mm_P1.27mm | U2110 |
| 1 | MCP2221AXP MCP2221AxP | SOIC-14_3.9x8.7mm_P1.27mm | U2120 |
| 1 | 74LS07 | SOIC-14_3.9x8.7mm_P1.27mm | U2230 |
| 1 | LP2985-3.3 | SOT-23-5 | U2231 |
| 1 | SST39SF040 | DIP-32_W15.24mm_LongPads | U3000 |
| 1 | AS6C4008-55PCN AS6C8008-55_TSOP | TSOP-II-44_10.16x18.41mm_P0.8mm | U3001 |
| 1 | Conn_02x08_Odd_Even | PinHeader_2x08_P2.54mm_Vertical | J2002 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J2120 |
| 1 | CONN_01X02_MALE Conn_01x02_Male | PinHeader_1x02_P2.54mm_Vertical | J2122 |
| 1 | Micro_SD_Card_Det | microSD_HC_Molex_104031-0811 | J2230 |
| 1 | SW_Push | SW_PUSH_6mm | SW2110 |
| 4 | LED | LED_D3.0mm | D1001, D2000/M1, D2001/H1, D2002/ST1 |
| 6 | 22pf | C_1206_3216Metric | C2000, C2001, C2002, C2003, C2230, C2231 |
| 5 | 22PF 22pF | C_1206_3216Metric | C2110, C2120, C2121, C3000, C3001 |
| 1 | 10UF 10uF | C_1206_3216Metric | C2111 |
| 1 | 10NF 10nF | C_1206_3216Metric | C2112 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100NF 100nF | C_1206_3216Metric | C2113 |
| 1 | 1 uF | C_1206_3216Metric | C2232 |
| 1 | 2.2 uF | C_1206_3216Metric | C2233 |
| 1 | 10 nF | C_1206_3216Metric | C2234 |
| 1 | 2111 | R_1206_3216Metric | R15 |
| 1 | 2.2K | R_1206_3216Metric | R1000 |
| 6 | R | R_1206_3216Metric | R2000, R2001, R2002, R2004, R2005, R2006 |
| 1 | 1M | R_1206_3216Metric | R2110 |
| 1 | 100K 100k | R_1206_3216Metric | R2120 |
| 3 | 4 x 10K | R_Array_Convex_4x1206 | RN2000, RN2001, RN2230 |
Tom80 design files
The KiCad project lives in the anjennings/Tom80 repository on GitHub; these links point at the commit this page was built from.
Tom80: common questions
How big is the Tom80 PCB?
The Tom80 measures 135 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Tom80?
49 components, from 30 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Tom80 design files?
From the anjennings/Tom80 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Tom80 design in my own project?
Yes, under the terms of its MIT license, which anjennings chose for the repository.
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