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MRF24WG0MA_12 Datasheet, PDF (7/38 Pages) Microchip Technology – MRF24WG0MA/MB Data Sheet 2.4 GHz IEEE 802.11b/g™
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MRF24WG0MA/MB
TABLE 1-1: Pin Description
Pin
Symbol
Type
Description
1
GND
P
Ground
2
NC*
NC*
No connect(3)
3
NC*
NC*
No connect(3)
4
NC*
NC*
No connect(4)
5
NC*
NC*
No connect(3)
6
NC*
NC*
No connect(3)
7
RESET
I: Constant(1) Module Reset input
8
NC
9
NC*
NC
Do not connect
NC*
No connect(3)
10
GND
P
Ground
11
NC
NC
Do not connect
12
NC
NC
Do not connect
13
NC
NC
Do not connect
14
NC
NC
Do not connect
15
NC
16
WP(2)
NC
Do not connect
I
Write protect (this pin is used to enable FLASH update)
17
VDD
P
Power
18
GND
P
Ground
19
GND
P
Ground
20
HIBERNATE
21
NC*
I
Hibernate mode enable (high input will disable the module)
NC*
No connect(3)
22
NC
NC
Do not connect
23
CS
I: Constant(1) SPI Chip Select input, constant drive or pull-up required
24
NC
NC
Do not connect
25
GND
P
Ground
26
DEBUGRX
I
Serial debug port input (see Section 2.0 “Circuit Description”)
27
DEBUGTX
O
Serial debug port output (see Section 2.0 “Circuit Description”)
28
GND
P
Ground
29
VDD
P
Power
30
GND
P
Ground
31
NC
NC
Do not connect
32
SDO
O
SPI data out
33
INT
O
Interrupt output (open drain – requires a pull-up)
34
SCK
I
SPI clock input
35
SDI
I
SPI data in
36
GND
P
Ground
Legend: Pin type abbreviation: P = Power Input, I = Input, O = Output, NC = Do Not Connect, NC* = No Connect
Note 1:
2:
3:
4:
Signals of Type “I: Constant” must either be constantly driven by the host or have a pull-up or pull-down (in
case the host is likely to tri-state the signal during power down modes). The constant drive is used to
ensure defined operation of the part and to minimize leakage current during low power modes.
WP is used as write-protect for the internal module SPI Flash. For production use, this pin should be
pulled low. This pin can be controlled by the host microcontroller to enable in field Flash updates.
Signals of Type “NC*” were JTAG function pins on previous family devices. Signals on these pins will have
no functional affect and will not impact the operation of this device.
This signal should be left floating or pulled high only to support lowest 802.11PS power mode.
 2012 Microchip Technology Inc.
Preliminary Information
DS70686B-page 7
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