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Cmod A7 Reference Manual

Revised June 24, 2016

This manual applies to the Cmod A7 Rev. B

DOC#: 502-328

Copyright Digilent, Inc. All rights reserved.

Other product and company names mentioned may be trademarks of their respective owners.

Page 1 of 10

Overview

The Digilent Cmod A7 is a small, 48-pin DIP form factor board built around a Xilinx Artix-7 FPGA. The board also

includes a USB-JTAG programming circuit, USB-UART bridge, clock source, Pmod host connector, SRAM, Quad-SPI

Flash, and basic I/O devices. These components make it a formidable, albeit compact, platform for digital logic

circuits and MicroBlaze™ embedded soft-core processor designs alike. There are 44 Digital FPGA I/O signals and

two FPGA Analog inputs that are routed to 100-mil-spaced through-hole pins so that users can integrate

programmable logic design directly into a solderless breadboard circuit. At just 0.7” by 2.75”, it can also be loaded

in a standard socket and used in embedded systems.

The Cmod A7 can be purchased with either an Artix-15T or Artix-35T FPGA. These two Cmod A7 product variants

are referred to as the Cmod A7-15T and Cmod A7-35T, respectively. When Digilent documentation describes

functionality that is common to both of these variants, they are referred to collectively as the “Cmod A7”. When

describing something that is only common to a specific variant, the variant will be explicitly called out by its name.

The only difference between the Cmod A7-15T and Cmod A7-35T are the capabilities of the FPGA found on the

board. They compare as follows:

The Cmod A7.



System Features

o

512KB SRAM with an 8-bit bus and 8ns

access times

o

4MB Quad-SPI Flash

o

USB-JTAG Programming Circuitry

o

Powered from USB or external 3.3-5.5V

supply connected to DIP pins



System Connectivity

o

USB-UART bridge



Interaction and Sensory Devices

o

2 LEDs

o

1 RGB LED

o

2 Push Buttons



Expansion Connectors

o

48-pin DIP connector with 44 Digital I/O

and 2 Analog inputs (0-3.3V)

o

One Pmod connector with 8 Digital I/O