Datasheet
Pmod Shield Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 3 of 10
Digilent has several small I/O modules available that can be connected using the I²C connector. These include a 3-
axis accelerometer, 4-channel, 12-bit A/Dconverter, serial character LCD panel, 3-axis gyroscope, real-time
clock/calendar, an I/O expander, and more.
3 SPI Connector
The SPI connector pins on header J6 are as follows: Pin 1 (MISO), Pin 3 (SCK), Pin 4 (MOSI), and Pin 5 (SS). These
signals also appear on Digilent host microcontroller boards. Jumpers are available on Digilent host microcontroller
boards that can used to select whether the host operates as a Master (transmit on MOSI, receive on MISO) or a
Slave (transmit on MISO, receive on MOSI) device. By default, the shorting blocks are normally placed in the
Master position for the Digilent microcontroller boards to function as an SPI master. Also, a jumper is available on
Digilent microcontroller boards that is used to select PWM output (in RD4 position) or the SPI SS function on Pin 5
(in RG9 position).
These same signals can also be accessed on the top row (pins 1-4) of Pmod header JC.
Appendix: Pmod Shield Pinout Tables
Protocol Compatibility Overview
Pmod
Header
Wi-FIRE
WF32
uC32
Arduino Uno
JA
GPIO
GPIO
GPIO
GPIO
JB
UART (minus CTS
and RTS), GPIO
UART (minus CTS
and RTS), GPIO
SPI, UART, GPIO
UART (top row only)
JC
GPIO, SPI, UART
(minus CTS and
RTS)
SPI, GPIO
GPIO, SPI
SPI (top row only), GPIO
(top row only)
JD
GPIO, UART
(minus CTS and
RTS)
GPIO, UART (minus
CTS and RTS)
UART. GPIO, I2C
(top row only)
Extra signals for use
with wires
JE
GPIO
GPIO
GPIO
Extra signals for sue
with wires
Header JA
Pmod
Shield
Pin
Pmod
Shield
Silk
Screen #
Wi-FIRE
PIC32 Signal
Wi-FIRE
Function
WF32
PIC32
signal
WF32
Function
uC32 PIC32
signal
uC32
Function
Arduino Uno
ATmega328P
Signal
Arduino
Uno
Function
JA1
26
EBID0/PMD0
/RE0
GPIO
PMD0/RE0
GPIO
PMD0/RE0
GPIO
N/A
N/A
JA2
27
EBID1/PMD1
/RE1
GPIO
PMD1/RE1
GPIO
PMD1/RE1
GPIO
N/A
N/A
JA3
28
EBID2/PMD2
/RE2
GPIO
PMD2/RE2
GPIO
PMD2/RE2
GPIO
N/A
N/A
JA4
29
EBID3/RPE3/
PMD3/RE3
GPIO
PMD3/RE3
GPIO
PMD3/RE3
GPIO
N/A
N/A