IP Avenger II

The IP Avenger II is a complete ethernet subsystem with an 8-bit high performance MCU and a 10/100 Mbit ethernet controller all mounted on the same module.

The module size is the same form factor (34.5 x 54mm) as all our other small modules, which makes it very easy to work with. 2.54 mm pin spacing also makes it easy to quickly prototype your design.

An on board 3.3 volt regulator and 5 volt tolerant I/O's also makes the module easy to use and implement in different environments. All passive components for the ethernet connection is on board so the user only has to supply the magnetics and an RJ45 connector.

A block diagram reveals the major components of the module and how they interconnect.

IET9121/23 Block Diagram

Technical Data:

The microcontroller on the IP Avenger II module is a modern high performing version of the trusted old 8051. The Silabs C8051F121/123 microcontrollers are capable of performing the major part of its instructions in only 1 clock cycle. Add to this that the IP Avenger II is capable of clocking the MCU with 100MHz you will quicky realize that it will do its data crunching extremly quickly. In addition to the high performance the chip is deviced with a number of powerful peripherals.

Peripheral summary:

IET9121/23

128 KByte IAP FLASH.

8 KByte XRAM.

4 channels 10/12-bit  A/D converter

On chip temperature sensor.

Programmable Gain Amplifiers

Up to 7 channels 8-bit A/D converter.

2 compare inputs.

2 12 bit D/A converters.

2 UARTS.

1 SMBus/I2C.

1 SPI bus.

A 5 channel high speed counter array.

100MHz max CPU clock

The development environment is of the latest technology with a JTAG interface that connects to a PC and allows you to do high level debug right on the board. The development kits comes with the required hardware to do this.


The on board ethernet controller is one that was tailored to work in embedded applications. With its 8-bit interface structure, its high speed bus interface and the on board 16Kbyte of SRAM it gives you unprecidented performance for its price.

Development kits:

The Development kit (DK1) contains one IP Avanger module, one Silabs EC2 JTAG Serial or USB debug interface, One JTAG connector cable and two IP Avenger evaluation Boards. Also in the kit you will find a CD ROM containing the Silabs IDE/Debuger, the SDCC C-compiler and one example project with a sample webserver with system diagnostics.

The image shows the content of the kit. The evaluation board can be powered by either the on board USB connector or a separate 9V DC battery eliminator. All IP Avenger II signals are available on easy to connect to headers. There is also a two row 40 pin connector tha allows you to add on your own extensions or evaluation modules.

Customizing your IP Avenger

As not all applications are alike, we offer the possibility to ship your IP Avengers customized to fit your particular application. We are ready to discuss different types of connectors or preinstalled jumpers etc. Call us for more information.

Ordering Information:

• IET9121(E), IP Avenger II 100MHz module in bulk.
• IET9123(E), IP Avenger II 100MHz module in bulk.
• IET9121(E)-DK1, Development kit with 2 IET9021 modules.
• IET9123(E)-DK1, Development kit with 2 IET9023 module.

The letter "E" in the partnumber indicates that the product fully complies with WEEE and RoHS directives.

All boards are tested before they are shipped. 

Go to the shop to purchase directly online.