# SC722 RCBus-80pin Z180 CPU module kit

A Z180 CPU module with SD card interface designed for RCBus

- **Seller:** [Small Computer Central](https://lectronz.com/stores/s-c-central), Stowmarket, England, UK
- **Price:** $40.00 (USD, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Retrocomputing, Kits
- **HS code:** 854290
- **Product page:** https://lectronz.com/products/sc722-rcbus-80pin-z180-cpu-module-kit

## Options

**Printed circuit board colour**

- Red
- Blue
- Green
- Black
- White

**SC346 Serial to USB C adapter**

- No thanks
- 1 x Serial adapter [Add $5.50]
- 2 x Serial adapter [Add $11.00]

**SC303 Micro SD card adapter**

- No thanks
- 1 x Micro SD adapter [Add $3.00]

**SC305 Adapter cable, 6-way, 8"/200mm**

- No thanks
- 1 x Adapter cable [Add $1.00]
- 2 x Adapter cable [Add $2.00]
- 3 x Adapter cable [Add $3.00]

## Links

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

## Images

![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODMsInB1ciI6ImJsb2JfaWQifX0=--c432320e837d7ecc1a8fb0de02541d8f537e83f7/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2023-08-18T17-3A18-3A00.157Z-SC722-20--20Assembled-20A-20--203x2.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODQsInB1ciI6ImJsb2JfaWQifX0=--1354e814c5a491d797c1fdcfb06585d8966a962b/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2023-08-18T17-3A18-3A00.157Z-SC722-20--20Assembled-20B-20--203x2.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDA1NTYsInB1ciI6ImJsb2JfaWQifX0=--0a8cbc8ba405ab8bebe214ba9d440a283859378e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/USB%20serial%20Adapter%20A%20-%20w1359.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDA1NjAsInB1ciI6ImJsb2JfaWQifX0=--9e02e8ab83c8754100ae5504781278b2b0f467eb/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/SD%20Card%20Adapter%20-%20w1814%20-%20brighter.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDA1NjQsInB1ciI6ImJsb2JfaWQifX0=--6e643b8992f0f5d72e285cc793dc760f7d486970/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/Adapter%20cable%206-way%20-%203x2.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODUsInB1ciI6ImJsb2JfaWQifX0=--591e8117ef581d69f86b84449a534d5cd5c6cbee/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2023-08-18T17-3A33-3A28.560Z-SC722-20--20In-20use-20A-20--203x2.jpg)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODcsInB1ciI6ImJsb2JfaWQifX0=--02dd2117b6547e40dc83438f47e88b89be7bf275/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2023-08-18T17-3A32-3A28.740Z-SC722_v1.0.0_Render_red_top-20x3.png)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODgsInB1ciI6ImJsb2JfaWQifX0=--8c8e39d90c3a2618ad0c5d2a58ab17876f1c3bec/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2023-08-18T17-3A32-3A28.740Z-SC722_v1.0.0_Render_red_bottom-20x3.png)
![SC722 RCBus-80pin Z180 CPU module kit](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTIwODksInB1ciI6ImJsb2JfaWQifX0=--4d842edc6badf8862b1617798284bd41ffad17eb/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/2023-08-18T17-3A32-3A28.740Z-Build-20your-20own-20--20illustration-20v2-20--203x2.png)

## Description

The module has the following features:

- Z180 CPU running at 18.432 MHz
- Connection for micro SD card adapter
- Flexible connection of serial ports to bus
- Compatible with RCBus 

An RCBus 80-pin backplane is required, such as SC700 series backplanes.

This module is typically used with a 1 MB linear memory module, such as SC721.

### Documentation

The documentation can be found at [www.smallcomputercentral.com](https://smallcomputercentral.com/)

### Compatibility

This module conforms to the [RCBus specification v1.0](https://smallcomputercentral.com/rcbus/) for RCBus-Z80.

The RCBus specification includes RCBus-2014 (both RC2014 standard 40-pin bus and RC2014 enhanced 60-pin bus) and also the full 80-pin RCBus. The 80-pin RCBus provides support for advanced Z80 features, such as the interrupt daisy-chain, as well as support for other processor families.

### The Kit

The full kit includes all the components needed to make the module, as shown in the first picture. Other modules and backplanes shown in the other pictures are not included. You will require tools, solder and cleaning materials to assemble this kit.

The Z180 CPU (Z8S180xx) is no longer in production and finding stock is becoming increasingly difficult. The CPU supplied in this kit is either the 20MHz or 33MHz version, and is either old or used stock. I test all of them before packing in kits. Some of the CPUs have superficial scratches. All other integrated circuits are brand new and from major retailers in the UK or USA.

### Printed Circuit Board

The printed circuit board is available on its own [here](https://lectronz.com/products/pick-n-mix-boards-for-rcbus-80pin).

### Complete Systems

If you are looking for a complete system the following products might be appropriate.

* SC126 RCBus-80pin Z180 RomWBW CP/M Motherboard
* SC720 RCBus-80pin Z80 RomWBW CP/M Motherboard
* SC791 RCBus-80pin Z80 RomWBW CP/M Computer
* SC792 RCBus-80pin Z180 RomWBW CP/M Computer
* SC114 RCBus-40pin Z80 SCM & BASIC Motherboard
* SC131 Pocket-sized Z180 RomWBW CP/M computer

### 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 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