Teknik Özellikler
Üretici: STMicroelectronics
Device Category: Sub-1GHz ultra-low power RF transceiver chip for license-free ISM frequency bands
Packaging definition: QTR corresponds to 4×4mm VFQFN20 package, tape and reel format for automated surface mounting
Temel Elektriksel Özellikler
Operating supply voltage: 1.8V to 3.6V
Supported working frequency ranges: 150MHz-174MHz, 300MHz-348MHz, 387MHz-470MHz, 779MHz-956MHz
Adjustable air transmission rate: 1kbps ~ 500kbps
Available modulation schemes: 2-FSK, GFSK, GMSK, MSK, ASK, OOK
Maximum transmit power: +16dBm
Receiving sensitivity: -118dBm
Current consumption parameters
Receive state: 9mA typical value
Transmit state at 11dBm output: 21mA typical value
Deep sleep mode with register data retention: 600nA
Operating temperature scope: -40℃ ~ +105℃
Communication interface with main controller: SPI
Package: 20-pin VFQFN, built-in exposed pad for heat dissipation
Temel Özellikler
Integrated hardware AES-128 encryption module to guarantee wireless data transmission security
Built-in CSMA/CA mechanism to prevent signal conflicts on the same frequency channel
Dedicated transmit and receive FIFO buffers, automatic CRC generation and verification functions
Supports antenna diversity switching to enhance receiving stability
Extremely fast frequency locking startup, startup delay only 6 microseconds
On-chip digital filtering circuit, configurable channel spacing
Compatible with wM-Bus wireless meter reading protocol and short-range radio standard specifications
Embedded internal step-down power conversion circuit to cut down overall system power consumption
Complete internal protection circuits, outstanding anti-interference performance applicable to industrial scenarios
Common Application Fields
Wireless remote reading systems for water, electricity and gas meters
Industrial environmental wireless sensor collection nodes
Smart home wireless control terminals
Building security alarm and access control equipment
Agricultural environmental monitoring battery-powered data recorders
Low-power long-distance IoT wireless communication modules
