MUNICH, Germany Infineon has combined an MCU with RF circuitry required to address several ISM frequency bands on a single chip. The devices aim at replacing infrared-based remote controls, but beyond that they enable applications in a broad range of wireless industrial controls.
The 'SmartLEWIS' product family integrates RF and logic function blocks on a single chip, reducing the board space required to implement wireless controls. The RF part includes an ASK/FSK multi-band transmitter for all sub 1GHz ISM bands. The chip also includes an 8051 microcontroller enhanced with a choice of specific embedded mixed-signal peripherals.
An important application field is remote controls, the company said. Radio-based devices could overcome the disadvantage of line-of-sight communication, which characterize the infrared-based remote controls in widespread use today. In addition, RF-based applications benefit from an extended range of more than 50 meters, compared to only a few meters for IR technology.
Besides remote controls, the device also could address other price sensitive markets such as wireless sensor markets, security sensors, or automatic meter reading, explained Rolf Hertel, head of marketing for Infineon's Wireless Control and Radar activities.
In order to enable industrial control applications, there is a 10-bit ADC integrated which interfaces to analog sensors, for instance to measure pressure, humidity or temperature. An integrated low-frequency receiver enables wireless wake-up in battery-operated applications. In order to enable the implementation of security systems, AES data encryption is supported via a library stored in an on-chip ROM.
Function libraries and a software framework are also available to reduce time-to-market, Hertel said.