UM1759 datasheet(4/50 Pages) STMICROELECTRONICS

4 / 50 page

Description

UM1759

4/50

DocID026279 Rev 1

Description

The Wireless M-Bus standard is defined by European Standard EN 13757-4 for physical

and data link layers, while the application layer is defined by EN 13757-3.

The different types of devices are:

Meters

Concentrators/Read-out devices

Routers

The standard defines the communication between remote meters and mobile readout

devices, stationary receivers, data collectors, etc. A typical application scenario is shown

below:

Figure 2. Final application scenario

STMicroelectronics has developed a Wireless M-Bus firmware stack implementation based

on its proprietary dual chip platform: the new SPIRIT1 RF Sub-1 GHz transceiver and the

STM32L15 ultra-low-power ARM Cortex-M3 microcontroller.

SPIRIT1:

The SPIRIT1 device is a very low-power, high performance RF transceiver intended for RF

wireless applications in the sub-1 GHz band. It is designed to operate at 169, 315, 433, 868,

and 915 MHz frequencies, and supports the following modulations: 2-FSK, GFSK, MSK,

OOK, and ASK. The air data rate is programmable from 1 to 500 kbps, depending on the

selected modulation.

It has an integrated SMPS for very low power consumption: 9 mA in Rx and 21 mA in Tx

mode at +11 dBm.

It uses a very small number of discrete external components and integrates a configurable

baseband modem which supports data management, modulation and demodulation. Data

management supports our proprietary, fully-programmable packet format, as well as the M-

Bus standard compliance format (all performance classes).

The SPIRIT1 is the native HW supporting the low level of the WM-Bus PHY protocol.

UM1759 датащи(PDF) 4 Page - STMicroelectronics