2 layers160 × 100 mm
2 layers160 × 100 mm
Cpu new
Noah1989/loopmicro2An 8-bit microcomputer for the 21st century
- Size
- 160 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 61
- Nets
- 157
- Pads
- 445
- Tracks, vias
- 1,306, 98
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 May 2019
- Updated
- 3 Aug 2026
Overview
Cpu new is an open-source printed circuit board by Noah1989, from the Noah1989/loopmicro repository on GitHub, published under the MIT licence. It is a 2-layer board of 160 × 100 mm with 61 parts on 157 nets, routed with 1,306 tracks and 98 vias.
It is built around the Z84C0010PEG, 74AC245SC and 74AC10PC, with the 74AC138SC, 74AC14SC and L7805 among its other parts. Its parts include 19 resistors, 17 capacitors, 12 ICs, 3 diodes and 2 connectors.
Main components
8
Z84C0010PEG
PDIP-4010MHz Others PDIP-40 Microcontrollers (MCU/MPU/SOC) ROHSZilogMicrocontrollers (MCU/MPU/SOC)
74AC245SC
SOIC-20-300mil-40℃~+85℃ 1 24mA 24mA 2V~6V 3.5ns@5V,50pF 40uA 74AC 8 Bidirectional Output enable Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers
74AC10PC
DIP-14-40℃~+85℃ 1mV、1mV、2mV 2.1V~3.85V 2.99V、4.49V、5.49V 24mA 24mA 2V~6V 2uA 3 3 74AC Series 7ns@5V,50pF 900mV~1.65V NAND Gate DIP-14 Logic Gates ROHSonsemiLogic Gates
74AC138SC
SOIC163-of-8 Decoder/DemultiplexerFAIRCHILDUncategorised
74AC14SC
SOIC-14-40℃~+85℃ 10ns@5V,50pF 2.2V~3.9V 24mA 24mA 2V~6V 2uA 4.76V~5.4V 440mV 500mV~1.1V 6 6 74AC Schmitt trigger SOIC-14 Inverters ROHSonsemiInverters
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BAT46
DO-35Schottky DiodesSTMicroelectronics
CR2032
-- Unclassified goods ROHSMaxellUncategorised
README
README.mdLoop Microcomputer
a minmal 8-bit machine that is...
-
... independent:
- contains all the tools required to design another version of itself
- does not require high soldering skills, uses through-hole parts only
- uses only "evergreen" parts that have been in production for decades and are still made today
-
... aproachable:
- simple through reduction
- NO hidden complexity behind brittle abstractions
- open source and self-documenting
-
... powerful, with it you can:
- learn/teach how computers work
- design electronics
- control CNC machines / 3d printers
- play games
Parts
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 12 | 100nF | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12 |
| 5 | 74AC245 | Package_DIP:DIP-20_W7.62mm_Socket_LongPads | U5, U6, U7, U8, U9 |
| 3 | 1µF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C15, C16, C17 |
| 3 | BAT46 | Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal | D1, D2, D3 |
| 2 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17, R18 |
| 2 | 10µF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C13, C14 |
| 2 | LY62256PL-55LLI | Package_DIP:DIP-28_W15.24mm_Socket_LongPads | U2, U3 |
| 1 | 10MHz | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | X1 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19 |
| 1 | 74AC10 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U10 |
| 1 | 74AC138 | Package_DIP:DIP-16_W7.62mm_Socket_LongPads | U4 |
| 1 | 74AC14 | Package_DIP:DIP-14_W7.62mm_Socket_LongPads | U11 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | C96ABC | common:Socket_DIN41612-CaseC1-full-Male-96Pin-3rows | J2 |
| 1 | CR2032 | Battery:BatteryHolder_Keystone_1058_1x2032 | BT1 |
| 1 | Jumper | Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical | JP1 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U12 |
| 1 | LOGO | common:zilog | G*** |
| 1 | LOGO | common:logo | G*** |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | SW_SPDT | Button_Switch_THT:SW_Lever_1P2T_NKK_GW12LxH | SW2 |
| 1 | Z84C0010PEG | Package_DIP:DIP-40_W15.24mm_Socket_LongPads | U1 |
The 60 most common of 61 parts.
Questions
How big is the Cpu new PCB?
It measures 160 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cpu new use?
61 parts, built around the Z84C0010PEG, 74AC245SC, 74AC10PC and 74AC138SC. 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 Cpu new KiCad files?
From the Noah1989/loopmicro repository on GitHub, at the commit this page was made from: the board is hardware/ecb-prototype/cpu-new/cpu-new.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cpu new 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).
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