Circuit Description

AX−SFEU and AX−SFEU−API are ultra−low power

single chip solutions for a node on the Sigfox network with

both up− and down−link functionality. The AX−SFEU chip

is delivered fully ready for operation and contains all the

necessary firmware to transmit and receive data from the

Sigfox network in Europe. It connects to the customer

product using a logic level RS232 UART. AT commands are

used to send frames and configure radio parameters.

The AX−SFEU−API variant is intended for customers

wishing to write their own application software based on the

AX−SF−LIB−1−GEVK library.

Features

Functionality and Ecosystem

• Sigfox up−link and down−link functionality controlled

by AT commands or API

• The AX−SFEU and AX−SF−API ICs are part of a

whole development and product ecosystem available

from ON Semiconductor for any Sigfox requirement.

Other parts of the ecosystem include

♦ Ready to go development kit

DVK−SFEU−[API]−1−GEVK including a 2 year

Sigfox subscription

♦ Sigfox Ready® certified reference design for the

AX−SFEU and AX−SFEU−API ICs

♦ AX−SF10−MINI21−868−B1 and

AX−SF10−ANT21−868−B1, Sigfox compliant SMT

modules based on AX−SFEU with 50  pads or chip

antenna. Not available for AX−SFEU−API

General Features

• QFN40 5 mm x 7 mm package

• Supply range 2.1 − 3.6 V

• −40°C to 85°C

• Temperature sensor

• Supply voltage measurements