Mc68681-basic
About the Mc68681-basic PCB
Mc68681-basic is an open source PCB design by rosco-m68k, published on GitHub under the MIT license. It is a 4-layer board measuring 80 × 110 mm, with 30 components from 17 distinct parts.
Other key parts include the XR68C681CJTR-F, 74HCT245, 74125, IC6_DECO.PLD and IC7_UART_.PLD. By type, the board carries 15 capacitors, 7 ICs, 4 connectors, 2 resistors, 1 transistor and 1 jumper.
From the project
Supporting hardware, expansions and projects for the rosco_m68k
This directory contains both the XR68C681 DUART board.
Main components on the Mc68681-basic
Mc68681-basic bill of materials (BOM)
30 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | XR68C681CJTR-F | PLCC-44_THT-Socket | IC1 |
| 3 | 74HCT245 | DIP-20_W7.62mm_Socket_LongPads | IC2, IC3, IC4 |
| 1 | 74125 | DIP-14_W7.62mm_Socket_LongPads | IC5 |
| 1 | IC6_DECO.PLD | DIP-20_W7.62mm_Socket_LongPads | IC6 |
| 1 | IC7_UART_.PLD | DIP-20_W7.62mm_Socket_LongPads | IC7 |
| 1 | Crystal | Crystal_HC49-4H_Vertical | Q1 |
| 1 | CONN_01X04_MALE Conn_02x32_Odd_Even | PinHeader_2x32_P2.54mm_Vertical | J1 |
| 1 | EXTBUS | PinHeader_2x08_P2.54mm_Vertical | J2 |
| 1 | UART_A | PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | UART_B | PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | Conn_02x05_Odd_Even | PinHeader_2x05_P2.54mm_Vertical | JP1-5 |
| 10 | 100NF 100nF | C2.5-3 | C1, C2, C4, C6, C7, C8, C9, C10 +2 |
| 2 | 100NF 7pF | C_Rect_L7.0mm_W2.0mm_P5.00mm | C3, C5 |
| 1 | 10UF 220uF | CP_Radial_D6.3mm_P2.50mm | C13 |
| 1 | 100NF 220uF | CP_Radial_D6.3mm_P2.50mm | C14 |
| 1 | 100nF | C2.5-3 | C15 |
| 2 | 5.1K 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
Mc68681-basic design files
The KiCad project lives in the rosco-m68k/hardware-projects repository on GitHub; these links point at the commit this page was built from.
Mc68681-basic: common questions
How big is the Mc68681-basic PCB?
The Mc68681-basic measures 80 × 110 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Mc68681-basic?
30 components, from 17 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 Mc68681-basic design files?
From the rosco-m68k/hardware-projects repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Mc68681-basic design in my own project?
Yes, under the terms of its MIT license, which rosco-m68k chose for the repository.
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