MRF49XA-I/ST Microchip Technology, MRF49XA-I/ST Datasheet - Page 25

• 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

REGISTER 2-4:
© 2009 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-9
bit 8
bit 7-4
bit 3
Note 1:
R/W-1
R/W-0
2:
The transmitter FSK modulation parameters are used for calculating the resulting output frequency, as
shown in Equation 2-1.
The output transmit power range is relative to the maximum available power, which depends on the actual
antenna impedance.
CCB<15:9>: Command Code bits
The command code bits (1001100b) are serially sent to the microcontroller to identify the bits to be
written in the TXCREG.
MODPLY: Modulation Polarity bit (for FSK)
When MODPLY is configured as high/low:
1 = Logic ‘0’ is the higher channel frequency and logic ‘1’ is the lower channel frequency (negative
0 = Logic ‘0’ is the lower channel frequency and logic ‘1’ is the higher channel frequency (positive
MODBW<3:0>: Modulation Bandwidth bits
These bits set the FSK frequency deviation for transmitting the logic ‘1’ and logic ‘0’.
1111 = 240 kHz
1110 = 225 kHz
1101 = 210 kHz
1100 = 195 kHz
1011 = 180 kHz
1010 = 165 kHz
1001 = 150 kHz
1000 = 135 kHz
0111 = 120 kHz
0110 = 105 kHz
0101 = 90 kHz
0100 = 75 kHz
0011 = 60 kHz
0010 = 45 kHz
0001 = 30 kHz
0000 = 15 kHz
Reserved: Write as ‘0’
R/W-0
R/W-0
deviation)
deviation)
MODBW<3:0>
TXCREG: TRANSMIT CONFIGURATION REGISTER (POR: 0x9800)
r = reserved bit
W = Writable bit
‘1’ = Bit is set
R/W-0
R/W-0
CCB<15:9>
R/W-1
R/W-0
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
R/W-0
r
R/W-0
R/W-0
OTXPWR<2:0>
x = Bit is unknown
MRF49XA
R/W-0
R/W-0
DS70590B-page 23
(1)
MODPLY
R/W-0
R/W-0
bit 8
bit 0