# SC527 Z80 Processor Card Kit for Z50Bus

A Z80 processor card for Z50Bus including CPU, RAM, ROM, and serial port

- **Seller:** [Small Computer Central](https://lectronz.com/stores/s-c-central), Stowmarket, England, UK
- **Price:** $48.00 (USD, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Retrocomputing, Kits
- **HS code:** 854290
- **Product page:** https://lectronz.com/products/sc527-z80-processor-card-kit-for-z50bus

## Options

**Printed circuit board colour**

- Black
- Red
- Blue
- Green
- White

**SC346 Serial to USB C adapter	**

- No thanks
- 1 x Serial adapter [Add $5.50]

## Links

- [Documentation](https://smallcomputercentral.com/)

## Images

![SC527 Z80 Processor Card Kit for Z50Bus](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTkxNDEsInB1ciI6ImJsb2JfaWQifX0=--9420e2d8afd2e8a28c054ef6630a61b0fe3bca5b/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/SC527%20-%20Assembled%201%20-%203x2.jpg)
![SC527 Z80 Processor Card Kit for Z50Bus](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTkxNDUsInB1ciI6ImJsb2JfaWQifX0=--e853cfaa924cc3b69afc54fb60a139baee1484e6/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/SC527%20-%20Assembled%202%20-%203x2.jpg)
![SC527 Z80 Processor Card Kit for Z50Bus](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDA2ODksInB1ciI6ImJsb2JfaWQifX0=--926eb2efbfba03f71858938f8f1f89f7e6cbff03/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/USB%20serial%20Adapter%20A%20-%20w1359.jpg)
![SC527 Z80 Processor Card Kit for Z50Bus](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTkxNDksInB1ciI6ImJsb2JfaWQifX0=--abc0808c8d32a6508aa72916b4f6648a92842ee9/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/SC527_v1.0.0_Render_black_top.jpg)
![SC527 Z80 Processor Card Kit for Z50Bus](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTkxNTMsInB1ciI6ImJsb2JfaWQifX0=--5e40e8caf56065fdf15a15c85e1693b27c45abd1/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/SC527%20-%20In%20use%20-%203x2.jpg)

## Description

This is a Z80 processor card for Z50Bus. It contains a Z80 CPU, ROM, RAM, clock oscillator, and a simple serial port. Just add a backplane and a power/reset card to get started.

This card is an alternative to SC516 and has been created due to supply problems with some SC516 components.

### Features

- Z80 CPU, typically running at 7.3728 MHz
- 128k bytes RAM (second 64k not easy to use, so best consider it to be 64k usable)
- 128k bytes ROM divided into four 32k banks, selected with jumpers
- Simple bit-bang serial port to get you started
- LiNC Z50Bus header plug
- LED for power and status indication
- Option to fit a second clock oscillator, selectable with jumper
- Runs the Small Computer Monitor, with ROM BASIC and the CP/M loader included
 
The onboard LED can flash results of the self-test, so a serial port or RAM problem will not look like a dead processor.

### The Kit

The kit contains everything you need to build the card, except solder, tools, and cleaning materials. To use the completed card you require* a backplane (eg. SC501) and a power/reset card (eg. SC502), a USB to serial adapter (5-volt power and 5-volt signals), a computer, and a terminal program, such as Tera Term.

* It is possible to use this card as a single board computer (SBC) by powering it from the serial port and connecting a reset button between the bus header reset pin and ground pin.

If you have any doubts about sourcing a suitable USB to serial adapter, you might like to include this option with your kit.

### Documentation

This product has a user guide and an assembly guide. The Small Computer Monitor has a user guide and a detailed tutorial. These documents can be found at [www.scc.me.uk](https://smallcomputercentral.wordpress.com/) or by following the documentation link below.

### Related items

- SC501 - Backplane
- SC502 - Power/reset card
- Components, spares, and accessories
- Pick'n'Mix printed circuit boards

### Notes

- This product is supplied as a kit of parts that require assembly.
- It is your responsibility to pay any import duty or taxes charged by your home country.
- This design is made with the permission of LiNC (designers of the Z50Bus).
- This product is designed for hobby use and is not suitable for industrial, commercial, or safety-critical applications.

## Shipping policy

Products usually ship within 3 days