Zilog Announces the Z8F2480 Power Monitor with eZ80F91 Webserver << Back   View All


Zilog Announces the Z8F2480 Power Monitor with eZ80F91 Webserver


A Reference Design for Energy Efficiency with Digital MCU Technology


Milpitas CA., Leiden the netherlands, August 12th, 2014 – Zilog, an IXYS Company (Nasdaq “IXYS”) and the legendary supplier of microcontrollers (MCUs) providing solutions for the industrial, telecommunication, automotive and consumer markets, introduces its Z8F2480 Power Monitor with eZ80F91 Webserver to expand its portfolio of reference designs which accelerate time to market solutions. This new reference design targets remote-operated AC motors and remote-operated commercial/architectural lighting control applications.


This reference design integrates a Z8F2480-based AC power monitor with Zilog’s eZ80F91 Webserver Module to showcase the capability of an optically-isolated Z8F2480 MCU-based power monitor to measure AC input voltage, AC load current, voltage/current phase shift, the power factor of the load, and to communicate via a standard Ethernet interface and webserver. The Z8F2480 MCU and the eZ80F91 Webserver Module are connected for easy mounting. The load is powered via a single-phase AC line with voltage in the range of 90 V to 240 V RMS at 50 or 60 Hz. The Z8F2480 MCU-based power board provides current to a power load and provides optically-isolated I2C signals to communicate with the eZ80F91 Module. This reference design can be used as a basis for developing systems that can control different power installations, including motors and lighting ballasts.


Key Features

This reference design features the following elements:


•         90 –240 V AC RMS input voltage range

•         Load current up to 3 amps

•         Less than 5 mA average current consumed from an AC line in either monitoring or standby modes

•         3750 V isolation voltage between the AC line and the eZ80F91 MCU


Potential Applications

This reference design can be used to develop a number of applications; the brief list below offers examples.


•         Remote-operated commercial or architectural lighting monitors

•         Remote-operated AC motors or other devices

•         Remote UPS monitoring

•         Remote power usage monitoring

•         Green Energy power generation monitoring

•         HVAC power usage monitoring


Zilog continues to expand its array of new turn-key reference designs to assist and accelerate design time. “Zilog is also now creating reference designs in concert with our strategic customers toward building integrated solutions which promote both companies’ products for strong system-level designs,” remarked Steve Darrough, Zilog’s VP of Marketing.

Zilog’s Z8F2480 Power Monitor with eZ80F91 Webserver reference design is now available for customers that place orders through the Zilog Store. For more information, visit


About Zilog, Inc.

Zilog is a trusted supplier of application-specific, embedded system-on-chip (SoC) solutions for the industrial and consumer markets. From its roots as an award-winning architect in the microprocessor and microcontroller industry, Zilog has evolved its expertise beyond core silicon to include SoCs, single board computers, application specific software stacks and development tools that allow embedded designers quick time to market in areas such as energy management, monitoring and metering, motor control and motion detection. Zilog is an IXYS company. For more information, visit, and


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