7/30/2019
Cora Z7 Reference Manual [Reference.Digilentinc]
https://reference.digilentinc.com/reference/programmable-logic/cora-z7/reference-manual?_ga=2.21685883.1349070004.1564406803-1961480359.… 19/23
Pin Name
Shield Function
Cora Z7 Connection
IO0-IO13, IO26-
IO41, A (IO42)
General purpose
I/O pins
See Section titled “Shield Digital I/O”
SCL
I2C Clock
See Section titled “Shield Digital I/O”
SDA
I2C Data
See Section titled “Shield Digital I/O”
SCK
SPI Clock
See Section titled “Shield Digital I/O”
SS
SPI Slave Select
See Section titled “Shield Digital I/O”
MOSI ()
SPI Master-Out
Slave-In
See Section titled “Shield Digital I/O”
MISO ()
SPI Master-In
Slave-In
See Section titled “Shield Digital I/O”
A0-A5
Single-Ended
Analog Input
See Section titled “Shield Analog I/O”
A6-A11
Differential Analog
Input
See Section titled “Shield Analog I/O”
V_P, V_N
Dedicated
Differential Analog
Input
See Section titled “Shield Analog I/O”
XGND
XADC Analog
Ground
Connected to net used to drive the XADC ground reference on the FPGA (VREFN)
N/C
Not Connected
Not Connected
IOREF
Digital I/O
Voltage reference
Connected to the Cora Z7 3.3V Power Rail (See the “Power Supplies” section)
RST
Reset to Shield
Connected to the red “SRST” button and a Digital I/O of the FPGA. When JP1 is shorted,
it is also connected to the DTR signal of the FTDI USB-UART bridge.
3V3
3.3V Power Rail
Connected to the Cora Z7 3.3V Power Rail (See the “Power Supplies” section)
5V0
5.0V Power Rail
Connected to the Cora Z7 5.0V Power Rail (See the “Power Supplies” section)
GND (), G
Ground
Connected to the Ground plane of Cora Z7
Table 13.1. Cora Z7 Shield Pinout
The pins connected directly to the FPGA can be used as general purpose inputs or outputs. These pins include the I2C, SPI, and general
purpose I/O pins. There are 200 Ohm series resistors between the FPGA and the digital I/O pins to help provide protection against
accidental short circuits. The absolute maximum and recommended operating voltages for these pins are outlined in Table 13.1.1.
Absolute
Minimum Voltage
Recommended Minimum
Operating Voltage
Recommended Maximum
Operating Voltage
Absolute
Maximum Voltage
13.1 Shield Digital I/O
