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Thiru_N's avatar
Thiru_N
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4 months ago

Help Needed: Implementing UART and SPI on Altera MAX II EPM240 CPLD

Hi everyone, I'm currently working with the Altera MAX II EPM240T100C5N CPLD and I'm trying to implement UART and SPI communication protocols on it. I'm using Verilog HDL and targeting a 3.3V logic ...
Programmable Logic Device
ShengN_altera's avatar
ShengN_altera
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4 months ago

Hi


Yes, you can implement UART, SPI, and I2C protocols directly in the MAX II CPLD using Verilog or VHDL. The CPLD is well-suited for custom digital logic, including serial communication interfaces.

UART: Implement a UART TX/RX module. Connect the CPLD’s tx and rx pins to the microcontroller’s UART pins.

SPI: Implement SPI master or slave logic in the CPLD. Connect MOSI, MISO, SCLK, and SS pins between the CPLD and microcontroller.

I2C: Implement I2C master or slave logic. Connect SDA and SCL lines.

You can implement those protocols in the MAX II CPLD using HDL. Connect the CPLD’s I/O pins/gpio pins to the microcontroller’s corresponding pins, ensuring voltage compatibility.