mrf24j40 Microchip Technology Inc., mrf24j40 Datasheet - Page 7

• Manufacturer Part Number: mrf24j40
• Description: Ieee 802.15.4? 2.4 Ghz Rf Transceiver
• Manufacturer: Microchip Technology Inc.

1.1
TABLE 1-2:
© 2006 Microchip Technology Inc.
Legend: A = Analog, D = Digital, I = Input, O = Output
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1
2
3
4
5
6
7
8
9
Pin Descriptions
CLKOUT
LPOSC2
LPOSC1
Symbol
RESET
GPIO0
GPIO1
GPIO5
GPIO4
GPIO2
GPIO3
WAKE
RXQP
OSC2
OSC1
LCAP
RXIP
GND
GND
GND
GND
GND
GND
SDO
RFP
RFN
SCK
V
V
V
V
V
V
V
V
V
SDI
INT
NC
NC
CS
DD
DD
DD
DD
DD
DD
DD
DD
DD
MRF24J40 PIN DESCRIPTIONS
Ground
Ground
Ground
Ground
Ground
Ground
Power
Power
Power
Power
Power
Power
Power
Power
Power
Type
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
AIO
AIO
DO
AO
AO
DI
DI
DI
DI
—
AI
AI
AI
AI
—
—
RF power supply. Bypass with a capacitor as close to the pin as possible.
Differential RF input/output (+).
Differential RF input/output (-).
RF power supply. Bypass with a capacitor as close to the pin as possible.
Guard ring power supply. Bypass with a capacitor as close to the pin as possible.
Guard ring ground.
General purpose digital I/O, also used as external PA enable.
General purpose digital I/O, also used as external TX/RX switch control.
General purpose digital I/O.
General purpose digital I/O.
General purpose digital I/O, also used as external TX/RX switch control.
General purpose digital I/O.
Global hardware Reset pin active-low.
Ground for digital circuit.
External wake-up trigger.
Interrupt pin to microcontroller.
Serial interface data output from MRF24J40.
Serial interface data input to MRF24J40.
Serial interface clock.
Serial interface enable.
Digital circuit power supply. Bypass with a capacitor as close to the pin as possible.
Ground for digital circuit.
No Connection, do not connect anything to this pin.
Ground for digital circuit.
Ground for digital circuit.
20/10/5/2.5 MHz clock output.
32 kHz crystal input (-).
32 kHz crystal input (+).
Analog RX I channel output (+).
Analog RX Q channel output (+).
Power supply for band gap reference circuit. Bypass with a capacitor as close to the
pin as possible.
Power supply for analog circuit. Bypass with a capacitor as close to the pin as
possible.
20 MHz crystal input (-).
20 MHz crystal input (+).
PLL power supply. Bypass with a capacitor as close to the pin as possible.
Ground for PLL.
Charge pump power supply. Bypass with a capacitor as close to the pin as possible.
No Connection.
VCO supply. Bypass with a capacitor as close to the pin as possible.
PLL loop filter external capacitor. Connected to external 180 pF capacitor.
Advance Information
Description
MRF24J40
DS39776A-page 5