N8 Bit Special
About the N8 Bit Special PCB
N8 Bit Special is an open source PCB design by nrivard, published on GitHub under the MIT license. It is a 4-layer board measuring 100 × 100 mm, with 45 components from 24 distinct parts.
Other key parts include the W65C02SxP, CY62256-70PC, 28C256, SC28L92_PLC44 and 22V10C. By type, the board carries 18 capacitors, 10 ICs, 6 resistors, 5 connectors, 3 diodes and 1 transistor.
It belongs with the usb & debug tools designs in this gallery.
From the project
65C02 Microcomputer
The n8 Bit Microcomputer is a homebrew breadboard computer built around a WDC65C02 8-bit CPU. If you are looking for the software that runs on this computer, check out LmaOS.
The n8 Bit was originally a breadboard computer based on the Ben Eater series of 6502 videos but with some added capabilities including ACIA support, GAL-based address decoding logic, and a power chip for more reliable reset and power-on. Since then, PCBs have been printed and development around the computer is based on these.
Main components on the N8 Bit Special
N8 Bit Special bill of materials (BOM)
45 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | W65C02SxP | PLCC-44_THT-Socket | U1 |
| 2 | CY62256-70PC | DIP-28_W15.24mm_Socket | U2, U3 |
| 1 | 28C256 | DIP-28_W15.24mm_Socket | U4 |
| 1 | SC28L92_PLC44 | PLCC-44_THT-Socket | U5 |
| 1 | 22V10C | DIP-24_W7.62mm_Socket | U6 |
| 1 | ds181315+ DS1813 | TO-92 | U7 |
| 1 | CH340C | SOIC-16_3.9x9.9mm_P1.27mm | U8 |
| 1 | 74LS21 | DIP-14_W7.62mm_Socket | U9 |
| 1 | 74HC00 | DIP-14_W7.62mm_Socket | U10 |
| 1 | 2N3904 | TO-92 | Q1 |
| 1 | 3.6864Mhz | Oscillator_DIP-8 | X1 |
| 1 | USB_B_Micro | USB_Micro-B_Wuerth_629105150521 | J1 |
| 1 | PORT0 | PinSocket_2x16_P2.54mm_Vertical | J2 |
| 1 | PORT1 | PinSocket_2x16_P2.54mm_Vertical | J3 |
| 1 | PORT2 | PinSocket_2x16_P2.54mm_Vertical | J4 |
| 1 | Conn_02x08_Odd_Even | PinHeader_2x06_P2.54mm_Vertical | J6 |
| 1 | SW_Push_Dual | SW_PUSH_6mm | SW1 |
| 3 | LED_ALT | LED_D3.0mm | D1, D2, D3 |
| 17 | 100nf | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C3, C4, C5, C6, C7, C8, C9 +9 |
| 1 | 470uF | CP_Radial_D8.0mm_P3.80mm | C2 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R3, R5 |
| 1 | 3K3 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 3K3 | R_Array_SIP9 | RN1 |
N8 Bit Special design files
The KiCad project lives in the nrivard/n8-Bit repository on GitHub; these links point at the commit this page was built from.
N8 Bit Special: common questions
How big is the N8 Bit Special PCB?
The N8 Bit Special measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the N8 Bit Special?
45 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the N8 Bit Special design files?
From the nrivard/n8-Bit repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the N8 Bit Special design in my own project?
Yes, under the terms of its MIT license, which nrivard chose for the repository.
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