1300 Henley Court Pullman, WA 99163 509.334.6306 www.digilentinc.com Cmod A7 Reference Manual Revised June 24, 2016 This manual applies to the Cmod A7 Rev. B 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. 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 The Cmod A7. and 2 Analog inputs (0-3.3V) o One Pmod connector with 8 Digital I/O 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: Copyright Digilent, Inc. All rights reserved. DOC : 502-328 Page 1 of 10 Other product and company names mentioned may be trademarks of their respective owners. Cmod A7 Reference Manual Product Variant Cmod A7-15T Cmod A7-35T FPGA Part XC7A15T-1CPG236C XC7A35T-1CPG236C 1 MSPS On-chip ADC Yes Yes Programming options Quad-SPI Flash/JTAG Quad-SPI Flash/JTAG Look-up Tables (LUTs) 10,400 20,800 Flip-Flops 20,800 41,600 Block RAM 112.5 KB 225 KB Clock Management Tiles 5 5 The Cmod A7 is fully compatible with the high-performance Vivado Design Suite. It is supported under the free WebPACK license, so designs can be implemented at no additional cost. This free license includes the ability to create MicroBlaze soft-core processor designs. Design resources, example projects, and tutorials are available for download at the Cmod A7 Resource Center. 1 Power Supplies The Cmod A7 uses a Linear Technologies LTC3569 triple output buck power regulator to generate the needed voltages for the onboard components. It is connected as shown in Fig. 1.1. The characteristics of the outputs are shown in Table 1.1. Figure 1.1. Cmod A7 Power Supply. Copyright Digilent, Inc. All rights reserved. Page 2 of 10 Other product and company names mentioned may be trademarks of their respective owners.