MRF49XA-I/ST Microchip Technology, MRF49XA-I/ST Datasheet - Page 40

• 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 2-14:
EQUATION 2-7:
DS70590B-page 38
MRF49XA
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-13
bit 12-8
bit 7-0
Note 1:
WUTIME
where:
WTMV<7:0> = Decimal Value between 0 to 255
WTEV<4:0> = Decimal Value between 0 to 29
R/W-1
R/W-1
The WTSREG sets the wake-up interval for the device. After setting the wake-up time, the WUTEN bit
(PMCREG<1>) must be cleared and set at the end of every wake-up cycle. The wake-up duration can be
calculated using Equation 2-7.
(
ms
CCB<15:13>
)
CCB<15:13>: Command Code bits
The command code bits (111b) are serially sent to the microcontroller to identify the bits to be written
in the WTSREG.
WTEV<4:0>: Wake-up Timer Exponential Value bits
These bits define the exponential value to be used to set up the time interval. The value must be a
decimal equivalent between 0 and 29.
WTMV<7:0>: Wake-up Timer Multiplier Exponential Value bits
These bits define the multiplier value to be used to set up the time interval. The value must be a
decimal equivalent between 0 and 255.
= 1.03 x WTMV<7:0> x 2
R/W-1
R/W-0
WTSREG: WAKE-UP TIMER VALUE SET REGISTER (POR: 0xE196)
r = reserved bit
W = Writable bit
‘1’ = Bit is set
R/W-1
R/W-0
WTEV<4:0>
R/W-0
R/W-1
Preliminary
+ 0.5 ms
WTMV<7:0>
(1)
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
R/W-0
WTEV<4:0>
R/W-0
R/W-1
© 2009 Microchip Technology Inc.
x = Bit is unknown
R/W-0
R/W-1
R/W-1
R/W-0
bit 8
bit 0