eZ80L92 Product Brief0 pages

eZ80® Microprocessors

eZ80L92 Product Brief
PB008607-0103

Product Block Diagram
eZ80L92 MPU
24-Bit GPIO

Infrared
Encoder/
Decoder

2 UART

I2C

SPI

6 PRT

WDT

RealTime
Clock

4 CS +
WSG

JTAG

ZDI

Features
The eZ80L92 microprocessor is a member of
ZiLOG’s eZ80® product family. It offers the following features:
• High-performance, pipelined eZ80® CPU available at 20MHz or 50MHz maximum speed
• 24 bits of General-Purpose I/O
• IrDA™ compatible Infrared Encoder/Decoder
• 2 UARTs with independent baud rate generators
• I2C with independent clock rate generator
• SPI with independent clock rate generator
• Glueless external memory interface with 4 Chip
Selects, independent WAIT state generators, and
external WAIT input pin; supports Z80, Intel,
and Motorola bus-compatible peripherals.
• Six 16-bit Counter/Timers with prescalers and
direct input/output drive capability
• Interrupt controller supports internal and external maskable interrupts as well as a nonmaskable interrupt input
• Watch-Dog Timer

• Real-time clock with on-chip 32KHz oscillator,
selectable 50/60Hz input, and separate VDD pin
for battery backup
• JTAG Debug Interface (also supports ZiLOG
Debug Interface)
• New DMA-like eZ80® instructions
• Power management features including SLEEP/
HALT modes and peripheral power-down controls
• 100-pin LQFP package
• 3.0–3.6V supply voltage with 5V tolerant inputs
• Operating Temperature Ranges:
– Standard: 0ºC to +70ºC
– Extended: –40ºC to +105ºC

General Description
The eZ80L92 is a power-efficient, optimized pipeline architecture microprocessor operating up to
50 MHz. It is part of a line of eZ80®-based standard
products targeted toward industrial, communication, security, automation, and embedded Internet
applications.

eZ80® CPU Core
The eZ80® can operate in Z80-compatible (64KB)
mode or full 24-bit (16 MB) addressing mode.
Considering both the increased clock speed and
processor efficiency, the eZ80®’s processing power
rivals the performance of 16-bit microprocessors.
The eZ80 ® improves on the world-famous Z80
architecture. Like the Z80, it features dual bank
registers for fast context switching.

eZ80L92 Peripherals
General-Purpose Input/Output
The eZ80L92 microprocessor features 24 bits of
General-Purpose Input or Output (GPIO). All port

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