STAR-Module Plus 910 MHz Preliminary Rev 1.1 Integration Guide Author: Pier Giorgio Peruzzi StarModulePlus910_1_2.d Revision: 1.
SmallSTAR-Module 910 Document History Rev 1.1 FW release 1.35 Introduction………………………………………………………………………………….2 Pinout………………………………………………………………………………………….3 Electrical characteristics……………………………….……………………………………3 RF chracteristics…..…………………………………………………………………………4 Timings…………………………………………………………………………………………4 Block diagram…………………………………………………………………………………4 Basic module states………………………………………………………………………….5 Regulatory : This device complies with Part 15 of the FCC Rules.
SmallSTAR-Module 910 Introduction The STAR-Module Plus 910 is an FSK RF half-duplex transceiver working at 910 MHz. Its main features are: • FSK Frequency Shift Keying Modulation • Default RF baud rate 36864 bps Manchester encoded • UART baud rate : 38400 8 n 1 bps • Extended 5.5 to 3.
SmallSTAR-Module 910 Pin Direction Description J1 - RF CONNECTOR 1 - GROUND 2 Output CD# (active low) 3 Input IDLE 4 Output TX_DATA 5 Input RX_DATA 6 - GROUND 7 - Vdc (3.1 to 5.5 V) 8 Input RESET_ 9 - GROUND IDLE HIGH Sleep Mode Function LOW Rx mode – Data received sent on TX_DATA, CD# asserted means RF channel is busy Electrical characteristics Description TX mode current RX mode current IDLE mode current @ 3.
SmallSTAR-Module 910 Block diagram Blocks description: • Reset supervisor: the microcontroller is reset when power supply falls below 3.0 V • Temperature sensor: 10kOhm NTC • Microcontroller: Atmel ATMega8L with RISC AVR core, 8kB Flash, 1kB SRAM, 512 B EEPROM, ADC, UART, I2C controller, 8MHz internal clock oscillator • RF Transceiver: Infineon TDA5252 with PLL synthesizer (reference oscillator 18.
SmallSTAR-Module 910 RF interface StarModuleSLC910 has 50 Ohm impedance on RF out in TX and RX mode, therefore impedance matching is required for antenna system of host. Care must be taken for the proximity of conductive materials or the user’s hand that will cause a mismatch of the antenna, decreasing the transceiver RF characteristics.
SmallSTAR-Module 910 Integration Examples StarModulePlus910_1_2.
