STS1TX datasheet(6/70 Pages) STMICROELECTRONICS

6 / 70 page

Description

STS1TX

6/70

DocID025109 Rev 1

Description

The STS1TX is a very low-power RF transmitter intended for RF wireless applications in the

sub-1 GHz band. It is designed to operate both in the license-free ISM and SRD frequency

bands at 169, 315, 433, 868, and 915 MHz, but can also be programmed to operate at other

frequencies in the 300-348, 387-470, and 779-956 MHz bands. The air data rate is

programmable from 1 to 500 kbps, and the STS1TX can be used in systems with channel

spacing of 12.5/25 kHz, complying with the EN 300 220 standard. It uses very few discrete

external components and integrates a configurable baseband modem, which supports data

management and modulation. The data management handles the data in the proprietary

fully-programmable packet format, and also allows the M-Bus standard compliance format

(all performance classes).

An AES 128-bit encryption co-processor is available for secure data transfer. The STS1TX

supports different modulation schemes: 2-FSK, GFSK, OOK, ASK, and MSK. Transmitted

data bytes are buffered in FIFO (TX FIFO), accessible via the SPI interface for host

processing.

STS1TX Fiches technique(PDF) 6 Page - STMicroelectronics