HardLabs

Neo6502PC-CPU

OLIMEX·Neo6502pc·HARDWARE/Neo6502pc-CPU-rev.B/Neo6502PC-CPU_Rev_B.kicad_pcb

Neo6502PC-CPU PCB layout, top view — open source RP2040/RP2350 board by OLIMEX

About the Neo6502PC-CPU PCB

Neo6502PC-CPU is an open source RP2040/RP2350 PCB design by OLIMEX, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 54 × 124 mm, with 116 components from 48 distinct parts.

Its main chip is the RP2040(QFN-56_7x7mm_P0.4mm), from the RP2040/RP2350 family. Other key parts include the ZD25Q16BTIGT(SOIC-8_208mils), CH217K(SOT23-6L), CH334S(SSOP-28), W65C02S6TQTG-14(TQFP44) and 74LVC245APW(TSSOP20). By type, the board carries 37 capacitors, 32 resistors, 8 ICs, 3 transistors and 2 diodes.

It belongs with the retro computing and keyboards designs in this gallery.

From the project

World fastest 6502 computer. All in one Open Source Hardware and Software Modern Retro computer with real 6502 processor, HDMI, USB Flash drive, USB Gamepads, mouse, Keyboard support.

https://www.olimex.com/Products/Retro-Computers/Neo6502pc/open-source-hardware

Neo6502PC-CPU, from the project README
From the project README

Main components on the Neo6502PC-CPU

ZD25Q16BTIGT(SOIC-8_208mils)RP2040(QFN-56_7x7mm_P0.4mm)CH217K(SOT23-6L)CH334S(SSOP-28)W65C02S6TQTG-14(TQFP44)74LVC245APW(TSSOP20)

Neo6502PC-CPU bill of materials (BOM)

116 components, 48 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ZD25Q16BTIGT(SOIC-8_208mils)
U1
1
RP2040(QFN-56_7x7mm_P0.4mm)
U2
1
CH217K(SOT23-6L)
U3
1
CH334S(SSOP-28)
U4
1
W65C02S6TQTG-14(TQFP44)
U5
3
74LVC245APW(TSSOP20)
U6, U7, U8
2
Q12MHZ/20PF/10PPM/4P/3.2X2.5MM
Q12MHz/20pF/10ppm/4P/3.2x2.5mm
Q1, Q3
1
BC817-40(SOT23)
Q2
6
TESTPAD
+1V1, +3.3V1, +5V1, GND1, GND2, VBUS1
1
PJ-3.5-365-5P
AUDIO1
1
T1102D(6x6x9.5mm)
BOOT1
1
P-B-V-40-LF
BUS1
1
CABLE PH2.0-3
Cable-PWR1
1
pUEXT-CABLE-10-10-200MM
Cable-pUEXT1
1
HDMI-SWM-19
DVI1
1
FSMD035-1206
FUSE1
4
TESTPAD
HCEC1, HHPD1, HSCL1, HSDA1
1
SS-12D10L5
HUB_RST_OFF/ON1
4
Mounting_Hole_NPTH
MH1, MH2, MH3, MH4
1
PH2.0-3PWB
PWR_In/Out1
Show 28 more
QtyPartRefs
2
RA1206_(4x0603)_4B8_330R
RM1, RM2
1
Speaker_QMB-09B-03(1.5-5.0V_2.7kHz_F9.0mm*H5.5mm)
SPK1
1
NA(HN1x3)
SWD1
1
SLIDE SWITCH DM-04
SWITCH1
4
USB-A-SMT-6.3H
USB-HOST2, USB-HOST3, USB-HOST4, USB-PWR_Out1
1
USB-C-16P-F(A40-00119-A52-12)
USB-PGM1
1
SH1.0-10P-90D
pUEXT1
1
1N4148W/SOD123
D1
1
NA(1N5822/SS34/SMA)
D2
19
100nF/10V/20%/X5R/C0402
C1, C2, C3, C4, C5, C6, C7, C8 +11
5
2.2uF/6.3V/20%/X5R/C0402
C11, C12, C32, C35, C37
2
18pF/50V/5%/C0G/C0402
C15, C16
3
47uF/6.3V/20%/X5R/C0805
C17, C27, C28
1
1uF/10V/10%/X5R/C0603
C18
1
10uF/6.3V/20%/X5R/C0603
C19
2
NA(27pF/50V/5%/C0G/C0402)
C21, C22
2
22uF/6.3V/20%/X5R/C0603
C23, C29
2
NA(47uF/6.3V/20%/X5R/C0805)
C25, C26
10
10K/R0402
10k/R0402
R1, R12, R13, R14, R15, R16, R17, R26 +2
1
NA(10k/R0402)
R2
2
100R/R0402
R3, R6
2
27R/R0402
R4, R5
1
33K/R0402
33k/R0402
R7
1
150R/R0402
R8
1
47R/R1206
R9
3
2.2K/R0402
2.2k/R0402
R10, R29, R30
9
270R/R0402
R11, R18, R19, R20, R21, R22, R23, R24 +1
2
5.1k/1%/R0402
R31, R32

Neo6502PC-CPU design files

The KiCad project lives in the OLIMEX/Neo6502pc repository on GitHub; these links point at the commit this page was built from.

Neo6502PC-CPU: common questions

What microcontroller does the Neo6502PC-CPU use?

The Neo6502PC-CPU is built around the RP2040(QFN-56_7x7mm_P0.4mm), from the RP2040/RP2350 family.

How big is the Neo6502PC-CPU PCB?

The Neo6502PC-CPU measures 54 × 124 mm, has 4 copper layers and is 1.578 mm thick.

How many components are on the Neo6502PC-CPU?

116 components, from 48 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 Neo6502PC-CPU design files?

From the OLIMEX/Neo6502pc repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Neo6502PC-CPU design in my own project?

Yes, under the terms of its GPL-3.0 license, which OLIMEX chose for the repository.

Can I test firmware for the Neo6502PC-CPU without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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