2 layers
Buck
BryanOrabutt/ECK-88
This project is an attempt to recreate the Intel ECK-88 development kit using KiCAD software to recreate the board and schematics.
28 partsMIT
2 layers165.6 × 94 mm
ECK-88
BryanOrabutt/ECK-88This project is an attempt to recreate the Intel ECK-88 development kit using KiCAD software to recreate the board and schematics.
- Size
- 165.6 × 94 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 181
- Nets
- 197
- Pads
- 702
- Tracks, vias
- 1,931, 248
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 22 Sep 2017
- Updated
- 10 Nov 2021
Overview
ECK-88 is an open-source printed circuit board by BryanOrabutt, from the BryanOrabutt/ECK-88 repository on GitHub, published under the MIT licence. It is a 2-layer board of 165.6 × 94 mm with 181 parts on 197 nets, routed with 1,931 tracks and 248 vias.
It is built around the A13, ULN2803ADWR-HXY and 74LS14PC, with the 74LS32SC, TPS54302 and AD5 among its other parts. Its parts include 39 resistors, 21 ICs, 8 capacitors, 6 connectors and 5 diodes.
Main components
8A13
TQFP-176(20x20)TQFP-176(20x20) Microcontrollers (MCU/MPU/SOC) ROHSAllwinner TechMicrocontroller Units (MCUs/MPUs/SOCs)
ULN2803ADWR-HXY
SOP-181.15mA 1.5V 100uA 15pF 500mA 50uA 50uA 8 SOP-18 Darlington Transistor Arrays ROHSHXY MOSFETDarlington Transistor Arrays
74LS14PC
PDIP-14InvertersTexas Instruments
74LS32SC
-- Logic Gates ROHSTexas InstrumentsLogic Gates
TPS54302
UncategorisedTexas InstrumentsAD5
插件-65℃~+125℃ 12.19mm 1pF~5pF 250V 5000@100MHz 插件 Trimmers, Variable Capacitors ROHSKnowlesTrimmers, Variable CapacitorsJUMPER3
HDR-TH_3P-P2.54-L7.6-W2.5HDR-TH-3P-2.54mm New Arrivals ROHSWürth ElektronikUncategorised
STPS5L60U
SMB(DO-214AA)1 Independent 220uA@60V 520mV@5A 5A 60V 90A SMB(DO-214AA) Schottky Diodes ROHSSTMicroelectronicsSchottky Diodes
README
README.mdECK-88
This project is an attempt to recreate the Intel ECK-88 development kit using KiCAD software to recreate the board and schematics. There have been some additions to the board to aid in both educational and demonstrational use. These new additions are outlined below:
- Every address, data, and control signal is broken out to an IO header to allow for logic analyzer probing.
- Every address, data, and most control signals are broken out to LEDs for use when single stepping.
- A clock select was added that allows selection between the main 4 Mhz clock, an external clock, and a debounced push button for single stepping.
- All GPIO lines are broken out to headers (rather than no connect from the original ECK-88)
- All chips are socketed to allow replacement and reprogramming with ease.
- DC Barrel jack and LM1084 linear regulator added to allow wide range of power inputs.
Modification
If you wish to make any modifications to the current board, all of the files are designed in KiCAD. The KiCAD software can be obtained here: http://kicad.org/. All of the custom symbols and footprints are found in the Libraries and Libraries.pretty folders and will need to be manually added to the KiCAD library search path. The board was designed to meet the requirements of OSH Park's fabrication rules. For more information see: http://docs.oshpark.com/design-tools/kicad/
License
This project is licensed under the MIT License - see the LICENSE file for details
Parts
181| Qty | Value | Footprint | References |
|---|---|---|---|
| 32 | 1K | Resistors_SMD:R_0805_HandSoldering | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 +16 |
| 5 | 7.5K | Resistors_SMD:R_0805_HandSoldering | R1, R2, R3, R4, R39 |
| 4 | 1N914 | Diodes_ThroughHole:D_DO-35_SOD27_P2.54mm_Vertical_AnodeUp | D1, D2, D36, D37 |
| 4 | ULN2803ADWR | Housings_SOIC:SOIC-18W_7.5x11.6mm_Pitch1.27mm | U11, U13, U14, U15 |
| 3 | GND | Pin_Headers:Pin_Header_Straight_2x02_Pitch2.54mm | GND, GND, GND |
| 2 | 1uF | Capacitors_SMD:C_0805_HandSoldering | C1, C2 |
| 2 | 2114 | Housings_DIP:DIP-18_W7.62mm_Socket | U9, U10 |
| 2 | 4.7uF | Capacitors_SMD:C_1206_HandSoldering | C7, C8 |
| 2 | CONN_01X05 | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | P11, P12 |
| 2 | CONN_01X08 | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | P13, P14 |
| 1 | 100nF | Capacitors_SMD:C_0805_HandSoldering | C4 |
| 1 | 10K±0.1% | Resistors_SMD:R_0805_HandSoldering | R38 |
| 1 | 10nF | Capacitors_SMD:C_0805_HandSoldering | C6 |
| 1 | 12MHz | Crystals:Crystal_SMD_HC49-SD_HandSoldering | Y1 |
| 1 | 220uF | Capacitors_SMD:CP_Elec_5x5.3 | C5 |
| 1 | 22uH | footprints:SRR1208-220ML | L1 |
| 1 | 30.9K±0.1% | Resistors_SMD:R_0805_HandSoldering | R337 |
| 1 | 5pF | Capacitors_SMD:C_0805_HandSoldering | C3 |
| 1 | 74LS138 | Housings_DIP:DIP-16_W7.62mm_Socket | U7 |
| 1 | 74LS14 | Housings_DIP:DIP-14_W7.62mm_Socket | U12 |
| 1 | 74LS32 | Housings_DIP:DIP-14_W7.62mm_Socket | U6 |
| 1 | 8088 | Housings_DIP:DIP-40_W15.24mm_Socket | U2 |
| 1 | 8155 | Housings_DIP:DIP-40_W15.24mm_Socket | U4 |
| 1 | 8251A | Housings_DIP:DIP-28_W15.24mm_Socket | U5 |
| 1 | 8282 | Housings_DIP:DIP-20_W7.62mm_Socket | U8 |
| 1 | 8284 | Housings_DIP:DIP-18_W7.62mm_Socket | U1 |
| 1 | 8755A | Housings_DIP:DIP-40_W15.24mm_Socket | U3 |
| 1 | A0 | LEDs:LED_1206_HandSoldering | A0 |
| 1 | A1 | LEDs:LED_1206_HandSoldering | A1 |
| 1 | A10 | LEDs:LED_1206_HandSoldering | A10 |
| 1 | A11 | LEDs:LED_1206_HandSoldering | A11 |
| 1 | A12 | LEDs:LED_1206_HandSoldering | A12 |
| 1 | A13 | LEDs:LED_1206_HandSoldering | A13 |
| 1 | A14 | LEDs:LED_1206_HandSoldering | A14 |
| 1 | A15 | LEDs:LED_1206_HandSoldering | A15 |
| 1 | A16 | LEDs:LED_1206_HandSoldering | A16 |
| 1 | A17 | LEDs:LED_1206_HandSoldering | A17 |
| 1 | A18 | LEDs:LED_1206_HandSoldering | A18 |
| 1 | A19 | LEDs:LED_1206_HandSoldering | A19 |
| 1 | A2 | LEDs:LED_1206_HandSoldering | A2 |
| 1 | A3 | LEDs:LED_1206_HandSoldering | A3 |
| 1 | A4 | LEDs:LED_1206_HandSoldering | A4 |
| 1 | A5 | LEDs:LED_1206_HandSoldering | A5 |
| 1 | A6 | LEDs:LED_1206_HandSoldering | A6 |
| 1 | A7 | LEDs:LED_1206_HandSoldering | A7 |
| 1 | A8 | LEDs:LED_1206_HandSoldering | A8 |
| 1 | A9 | LEDs:LED_1206_HandSoldering | A9 |
| 1 | AD0 | LEDs:LED_1206_HandSoldering | AD0 |
| 1 | AD1 | LEDs:LED_1206_HandSoldering | AD1 |
| 1 | AD2 | LEDs:LED_1206_HandSoldering | AD2 |
| 1 | AD3 | LEDs:LED_1206_HandSoldering | AD3 |
| 1 | AD4 | LEDs:LED_1206_HandSoldering | AD4 |
| 1 | AD5 | LEDs:LED_1206_HandSoldering | AD5 |
| 1 | AD6 | LEDs:LED_1206_HandSoldering | AD6 |
| 1 | AD7 | LEDs:LED_1206_HandSoldering | AD7 |
| 1 | BARREL_JACK | Connect:Barrel_Jack_CUI_PJ-036AH-SMT | 7-25V |
| 1 | CLK_SEL | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | CLK_SEL |
| 1 | CONN_01X06 | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | P9 |
| 1 | CONN_01X15 | Pin_Headers:Pin_Header_Straight_1x15_Pitch2.54mm | P10 |
| 1 | DEN | LEDs:LED_1206_HandSoldering | DEN |
| 1 | IO/~M | LEDs:LED_1206_HandSoldering | IO/~M |
| 1 | JUMPER3 | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | JP2 |
| 1 | PWR | Library:SPST-SLIDE | PWR |
| 1 | PWR | LEDs:LED_1206_HandSoldering | PWR1 |
| 1 | Pin_Header_Straight_1x01_Pitch2.54mm | Pin_Headers:Pin_Header_Straight_1x01_Pitch2.54mm | CLK |
| 1 | RD | LEDs:LED_1206_HandSoldering | RD |
| 1 | RESET | Buttons_Switches_ThroughHole:SW_PUSH_6mm_h5mm | RST |
| 1 | RX/TX | Pin_Headers:Pin_Header_Straight_1x02_Pitch2.54mm | RX/TX |
| 1 | STEP_CLK | Buttons_Switches_ThroughHole:SW_PUSH_6mm_h5mm | STEP_CLK |
| 1 | STPS5L60U | Diodes_SMD:D_SMA_Handsoldering | D38 |
| 1 | TPS5430 | Housings_SOIC:TI_SO-PowerPAD-8 | U16 |
| 1 | U3PA | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | U3PA |
| 1 | U3PB | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | U3PB |
| 1 | U4PA | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | U4PA |
| 1 | U4PB | Pin_Headers:Pin_Header_Straight_1x08_Pitch2.54mm | U4PB |
| 1 | U4PC | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | U4PC |
| 1 | WR | LEDs:LED_1206_HandSoldering | WR |
The 125 most common of 181 parts.
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Questions
How big is the ECK-88 PCB?
It measures 165.6 × 94 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ECK-88 use?
181 parts, built around the A13, ULN2803ADWR-HXY, 74LS14PC and 74LS32SC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the ECK-88 KiCad files?
From the BryanOrabutt/ECK-88 repository on GitHub, at the commit this page was made from: the board is 8088/8088.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ECK-88 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).