MRF49XA-I/ST Microchip Technology, MRF49XA-I/ST Datasheet - Page 62

• Manufacturer Part Number: MRF49XA-I/ST
• Description: IC RF TXRX 433/868/915 16-TSSOP
• Manufacturer: Microchip Technology

Specifications of MRF49XA-I/ST

• Package / Case: 16-TSSOP
• Frequency: 433MHz, 868MHz, 915MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FHSS, FSK
• Applications: Home / Industrial Automation, Remote Access, Security Alarms
• Power - Output: 7dbm
• Sensitivity: -110dBm
• Voltage - Supply: 2.2 V ~ 3.8 V
• Current - Receiving: 11mA
• Current - Transmitting: 15mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 1
• Number Of Transmitters: 2
• Wireless Frequency: 433 MHz to 915 MHz
• Output Power: + 7 dBm
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Modulation: FHSS, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 579-MRF49XA-1/ST

From PMCREG, the following points are applicable
when using the bit functionalities:
• The chip enters Receive mode if both the TXCEN
• FSK/DATA/FSEL input is equipped with an internal
• To enable the RF synthesizer, the crystal oscillator
• To turn on the baseband circuits, the RF
• Setting the RXCEN bit automatically turns on the
• Setting the TXCEN bit automatically turns on the
DS70590B-page 60
MRF49XA
and RXCEN bits are set.
pull-up resistor. To achieve minimum current
consumption, do not pull this input to logic low in
Sleep mode.
must be turned on.
synthesizer and the crystal oscillator must be
enabled.
crystal oscillator, synthesizer, baseband circuits
and RF front end.
crystal oscillator, synthesizer and RF power
amplifier.
Preliminary
The clock tail and automatic crystal enable/disable
features help in reducing the power consumption and
are discussed in detail in Section 3.4 “Crystal
Oscillator and Clock Output”.
The registers associated with power management are:
• STSREG (see Register 2-1)
• GENCREG (see Register 2-2)
• RXCREG (see Register 2-7)
• PMCREG (see Register 2-13)
© 2009 Microchip Technology Inc.