# Zilog Z80B

> variant of the Zilog Z80

**Wikidata**: [Q114836310](https://www.wikidata.org/wiki/Q114836310)  
**Source**: https://4ort.xyz/entity/zilog-z80b

## Summary
The Zilog Z80B is a variant of the Zilog Z80 8-bit microprocessor, designed as an integrated circuit model with a base clock frequency of 6 MHz. It belongs to the Zilog Z80 family, maintaining compatibility while offering enhanced processing speed.

## Key Facts
- **Instance of**: Integrated circuit model
- **Clock frequency**: 6 MHz (base clock frequency)
- **Subclass of**: Zilog Z80
- **Aliases**: Z-80B, Z80-B, Z80B
- **Parent microprocessor**: Zilog Z80 (created in March 1976)

## FAQs
### Q: What is the clock speed of the Zilog Z80B?
A: The Zilog Z80B operates at a base clock frequency of 6 MHz.

### Q: How does the Zilog Z80B relate to the original Z80?
A: The Zilog Z80B is a variant of the Zilog Z80, classified as its subclass and sharing the same family architecture.

### Q: What are the alternative names for the Zilog Z80B?
A: It is also referred to as Z-80B, Z80-B, or Z80B.

## Why It Matters
The Zilog Z80B matters due to its improved clock frequency of 6 MHz, which enhanced processing speed over the original Z80. This made it suitable for more demanding applications in the late 1970s and early 1980s, such as industrial controllers and early personal computers. As a compatible variant, it allowed existing Z80-based systems to upgrade performance without redesigning hardware, extending the lifespan of the Z80 architecture in competitive markets.

## Notable For
- **Higher performance**: Operates at 6 MHz base clock frequency, exceeding the original Z80's typical speeds.
- **Family compatibility**: Maintains full compatibility with the Z80 instruction set and architecture.
- **Model specificity**: Designated as a distinct integrated circuit model within the Zilog product line.

## Body
### Technical Specifications
- **Clock frequency**: 6 MHz (base clock frequency)
- **Data bus width**: 8-bit (inherited from Z80)
- **Address bus width**: 16-bit (inherited from Z80)
- **Instruction set**: Identical to Z80 (unlike some variants)

### Classification Details
- **Instance of**: Integrated circuit model
- **Subclass of**: Zilog Z80
- **Family**: Zilog Z80 series
- **Aliases**: Z-80B, Z80-B, Z80B

### Release Context
- Created as a performance-enhanced variant of the original Z80.
- Original Z80 inception: March 1976 (exact Z80B release date not specified in source).
- Positioning: Mid-range upgrade within Zilog's microprocessor lineup.