Cpu template with buffer

roberto314·Unicomp3·empty Boards/cpu_template_with_buffer/cpu_template_with_buffer.kicad_pcb

Cpu template with buffer PCB layout, top view — open source board by roberto314

About the Cpu template with buffer PCB

Cpu template with buffer is an open source PCB design by roberto314, published on GitHub under the BSD-2-Clause license. It is a 2-layer board measuring 100 × 100 mm, with 49 components from 27 distinct parts.

Other key parts include the SN74LVCC3245ANSR, SN74LVC245ANSR, SN74LVC125AD and XC9572VQ44. By type, the board carries 20 connectors, 10 capacitors, 7 jumpers, 6 ICs and 6 resistors.

It belongs with the retro computing and usb & debug tools designs in this gallery.

From the project

A modular 8-bit Computer able to recreate (nearly) every Retro computer of the late 70s to mid 80s.

A modular 8-bit Computer able to recreate (nearly) every microcomputer of the mid 70s to early 80s in Hardware without FPGAs (although an FPGA can be added). Can also be used as a teaching tool for:

VHDL or Verilog C RTOS (STM32F401 runs ChibiOS. Link: https://www.chibios.org) Python bash and linux in general (Olimex board runs linux with fbterm and tmux) Harwaredesign Timing of CPUs maybe Assembler SPI and I2C Interfaces CPLDs and FPGAs

Main components on the Cpu template with buffer

SN74LVCC3245ANSR SN74LVC245ANSR SN74LVC125AD XC9572VQ44

Cpu template with buffer bill of materials (BOM)

49 components, 27 distinct parts.

Qty	Part	Footprint	Refs
1	SN74LVCC3245ANSR	SO-24_5.3x15mm_P1.27mm	U2
2	SN74LVC245ANSR	SO-20_5.3x12.6mm_P1.27mm	U3, U4
2	SN74LVC125AD	SOIC-14_3.9x8.7mm_P1.27mm	U5, U6
1	XC9572VQ44	TQFP-44_10x10mm_P0.8mm	U9
2	BUS	PinSocket_2x20_P2.54mm_Vertical	J1, J2
2	Spare	PinSocket_2x20_P2.54mm_Vertical	J3, J4
1	Spare	PinHeader_2x06_P2.54mm_Vertical	J6
1	Outside	PinHeader_2x06_P2.54mm_Horizontal	J7
2	Conn_01x01	PinHeader_1x01_P2.00mm_Vertical	J8, J9
2	Conn_01x01	PinHeader_1x01_P1.27mm_Vertical	J11, J12
2	Conn_01x09	PinHeader_1x09_P2.54mm_Vertical	J18, J21
2	Conn_01x08	PinHeader_1x08_P2.54mm_Vertical	J19, J20
1	JTAG	PinHeader_2x05_P2.54mm_Horizontal	J22
1	Conn_01x12	PinSocket_1x12_P2.54mm_Vertical	J29
2	Conn_02x02_Odd_Even	PinSocket_2x02_P2.54mm_Vertical	J30, J31
1	GAL_20x10	DIP-24_W7.62mm	J35
1	Conn_01x11	PinSocket_1x11_P2.54mm_Vertical	J36
1	RW	SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm	JP1
1	PH2_5/8	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP2
1	CLK	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP3

Show 7 more

Qty	Part	Footprint	Refs
1	VBUF	SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm_NumberLabels	JP4
1	Vcc	SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels	JP5
1	R/W	SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm	JP8
1	PH2	SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm	JP9
10	100n	C_1206_3216Metric	C1, C2, C3, C4, C5, C6, C7, C8 +2
3	10k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R1, R2, R12
3	1k	R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R3, R4, R5

Cpu template with buffer design files

The KiCad project lives in the roberto314/Unicomp3 repository on GitHub; these links point at the commit this page was built from.

Cpu template with buffer: common questions

How big is the Cpu template with buffer PCB?

The Cpu template with buffer measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cpu template with buffer?

49 components, from 27 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cpu template with buffer design files?

From the roberto314/Unicomp3 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cpu template with buffer design in my own project?

Yes, under the terms of its BSD-2-Clause license, which roberto314 chose for the repository.

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