MRF24J40-I/ML Microchip Technology, MRF24J40-I/ML Datasheet - Page 92

• Manufacturer Part Number: MRF24J40-I/ML
• Description: IC TXRX IEEE/ZIGBEE 2.4GHZ 40QFN
• Manufacturer: Microchip Technology

Specifications of MRF24J40-I/ML

• Package / Case: 40-QFN
• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ISM, ZigBee™
• Power - Output: 0dBm
• Sensitivity: -95dBm
• Voltage - Supply: 2.4 V ~ 3.6 V
• Current - Receiving: 18mA
• Current - Transmitting: 18mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2.4 GHz
• Interface Type: 4 Wire SPI
• Noise Figure: 8 dB
• Output Power: + 0 dBm
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 22 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.4
The MRF24J40 is capable of selecting one of sixteen
channel frequencies in the 2.4 GHz band. The desired
channel is selected by configuring the CHANNEL bits
in the RFCON0 (0x200<7:4>) register. See Table 3-4
for the RFCON0 register setting for channel number
and frequency.
TABLE 3-5:
DS39776C-page 92
MRF24J40
0x200 RFCON0 CHANNEL3 CHANNEL2 CHANNEL1 CHANNEL0
Addr.
0x36 RFCTL
Note:
Channel Selection
Name
Perform an RF State Machine Reset (see
Section 3.1 “Reset”) after a channel
frequency change. Then, delay at least
192 μs after the RF State Machine Reset,
to allow the RF circuitry to calibrate.
REGISTERS ASSOCIATED WITH CHANNEL SELECTION
Bit 7
r
Bit 6
r
Bit 5
Preliminary
r
WAKECNT8 WAKECNT7
TABLE 3-4:
Bit 4
Channel
Number
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
11
RFOPT3
Bit 3
CHANNEL SELECTION
RFCON0 (0x200) REGISTER
SETTING
Frequency
2.405 GHz
2.410 GHz
2.415 GHz
2.420 GHz
2.425 GHz
2.430 GHz
2.435 GHz
2.440 GHz
2.445 GHz
2.450 GHz
2.455 GHz
2.460 GHz
2.465 GHz
2.470 GHz
2.475 GHz
2.480 GHz
© 2010 Microchip Technology Inc.
RFOPT2 RFOPT1 RFOPT0
RFRST
Bit 2
MODE
RFTX-
Bit 1
Set Value
0xA3
0xB3
0xC3
0xD3
0xE3
0xF3
0x03
0x13
0x23
0x33
0x43
0x53
0x63
0x73
0x83
0x93
RFRX-
MODE
Bit 0