Z80-512K
About the Z80-512K PCB
Z80-512K is an open source PCB design by skiselev, published on GitHub. It is a 2-layer board measuring 101.6 × 53.3 mm, with 27 components from 18 distinct parts.
Other key parts include the Z84C00, SST39SF040, AS6C4008, ATF1504AS and ADM693A. By type, the board carries 9 resistors, 7 capacitors, 5 ICs, 3 connectors, 1 crystal and 1 diode.
It belongs with the retro computing designs in this gallery.
From the project
Z80 CPU and Memory Module
In addition to these functions, Z80-512K includes programmable CLK2 clock divider, support for battery-backed SRAM, power failure NMI generation, and a watchdog.
Minimal CP/M computer system can be built using Z80-512K module, a backplane, and a serial port module, such as Z80 SIO or MC68B50 ACIA. For configurable baud rate settings, it is recommened to use serial modules that can use CLK2 as a clock, for example Steve Cousins' SC716 or SC725 modules. Additional storage module is not required, since RomWBW utilizes part of ROM and SRAM for ROM and RAM disks respecitvely, but a Compact Flash…
Main components on the Z80-512K
Z80-512K bill of materials (BOM)
27 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z84C00 | Socket_DIP40_600 | U1 |
| 1 | SST39SF040 | Socket_DIP32_600 | U2 |
| 1 | AS6C4008 | Socket_DIP32_600 | U3 |
| 1 | ATF1504AS | IC_PLCC44_TH | U4 |
| 1 | ADM693A | Socket_DIP16_300 | U5 |
| 1 | 7.3728MHz | OSC_Half_Can_DIP8 | X1 |
| 1 | VBAT | PinHeader_1x02_P2.54mm_Horizontal | J1 |
| 1 | JTAG | Conn_Pin_Header_5x2_2.54mm | J2 |
| 1 | RCBus-80 | Conn_Pin_Header_40x2_2.54mm_Right_Angle_RCBus80 | J3 |
| 1 | 2k | Potentiometer_Bourns_3266W_Vertical | RV1 |
| 1 | CPU | LED_3mm | D1 |
| 1 | 10uF | Cap_Cer_508 | C1 |
| 6 | 100nF | Cap_Cer_508 | C2, C3, C4, C5, C6, C7 |
| 5 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R1, R2, R3, R4, R5 |
| 1 | 29.4k | R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R6 |
| 1 | 1k | R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | R7 |
| 1 | 4.7k | Conn_SIL9 | RN1 |
| 1 | 4.7k | Conn_SIL6 | RN2 |
Z80-512K design files
The KiCad project lives in the skiselev/Z80-512K repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad/Z80-512K.kicad_pcb
- SchematicKiCad/Z80-512K.kicad_sch
Z80-512K: common questions
How big is the Z80-512K PCB?
The Z80-512K measures 101.6 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Z80-512K?
27 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Z80-512K design files?
From the skiselev/Z80-512K repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Z80-512K design in my own project?
The repository has no license, so all rights stay with skiselev. Use it as a reference, and ask the author before reusing the design.
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