Zigbee wireless module

U-Bee T 28

1. General Descriptions

1.1 Background Information

To provide a simple personal network service over the near field controlled devices, the IEEE 802.15.4 is doubtlessly superior to any other wireless systems such as WIFI, Bluetooth, etc.

The US-T28 is one of its kind of the UCLATM series(1) among the UPSC’ wireless communication devices. It is a low power, low cost wireless module and is fully compliant with IEEE802.15.4 standard.

The US-T28 features its simple yet versatile capabilities and hence suitable for various command, control, communications applications either in residential or industrial area.

The US-T28 is an integral of a 8-bit RISC core, a 2.4GHz transceiver, and 512 bytes of RAM and hence alleviates from the need of an external memory. In addition, the hardwired MAC and highly secured AES encryption accelerator with integrated sleep oscillator and power saving facilities are all provided to make low power and minimum processor overhead possible.

Big differences to compare with all of the IEEE 802.15.4 based products in the market are that US-T28 is not a simple RF module but with embedded solution which allows users to implement various kinds of applications. No need to bother the sophisticated development environment and lots of RD chores, simple settings via common PC will be sufficient.

Such high level of integration helps to reduce the overall system cost and simplifies the development efforts during the process. In particular, the standard device can also incorporate a wide range of digital and analog peripherals for further developments.

Where there’s situations need to extend the wireless control coverage, a power amplifier (PA) module can be easily adhered to the US-T28. No additional efforts need to be done. US-T28-PA, a radio frequency (RF) front end module integrating a highly efficient and linear one-stage power amplifier (PA), RF switches, a low noise amplifier (LNA) and a band-pass filter (BPF). Using this integrated RF front end module, not only the required board space can be reduced, but also the external components.

1.2 Specifications

US-T28

US-T28-PA

2. TX mode

3. RX mode