2 power supply – Digilent 410-194-GROUP User Manual
Page 2
PmodWiFi™ Reference Manual
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Page 2 of 2
Connector J1 – SPI Communications
Pin
Signal
Description
1
~SS
Slave Select
2
MOSI
Master out/Slave in Data
3
MISO
Master in/Slave out Data
4
SCK
Serial Clock
5
GND
Power Supply Ground
6
VCC
Power Supply (3.3V)
7
~INT
Interrupt Output
8
~RST
Hardware Reset
9
~WP
Write Protect
10
HIB
Hibernate
11
GND
Power Supply Ground
12
VCC
Power Supply (3.3V)
Interface connector signal description.
The SPI interface standard uses four signal lines. These are slave select (~SS), master out slave in (MOSI), master in
slave out (MISO), and serial clock (SCK). These signals map to the following signals on the MRF24WB0MA: ~SS
corresponds to the Chip Select signal
(~CS),
MOSI corresponds to Serial Data Input (SDI), MISO corresponds to
Serial Data Output (SDO), and SCK corresponds to the Serial Clock signal (SCK).
1.2 Power Supply
The PmodWiFi is designed to work with Digilent microcontroller boards that have 12-pin header connectors.
The PmodWiFi requires a 2.7V-3.6V supply voltage. A 3.3V power supply voltage is available on all Digilent system
boards and is provided as part of the 12-wire Pmod interface standard.
Digilent system boards with Pmod interface connectors allow jumper selection of the power supply voltage being
provided to the Pmod. Ensure that the system board is jumpered to provide 3.3V to the module before applying
power to the board.
For more information on the MRF24WB0MA, see thhich can be accessed on
Microchip's website.