The model you are referring to, "EP3C25E144I7N", is a product from Altera (now part of Intel), and it specifically refers to an FPGA ( Field Programmable Gate Array ) device in the Cyclone III family. The "EP3C25" indicates the Cyclone III device with 25K logic elements, and the "144" refers to the package with 144 pins. The "I7N" suffix represents the speed grade and the operating temperature range.
Overview of Package:
The EP3C25E144I7N is offered in a 144-pin LQFP (Low-Profile Quad Flat Package). This package is widely used in consumer electronics and other applications requiring moderate-to-high-density logic.
Pin Function Specifications and Circuit Principle Instructions:
The pin function specifications for EP3C25E144I7N are critical for understanding how each pin interface s with the device for proper functionality in a given circuit.
Pin Description Table (Listing all 144 pins with their specific functions): Pin Number Pin Name Pin Function Description 1 GND Ground connection for the device. 2 VCCIO Input/output voltage for I/O pins (depends on logic family). 3 VCC Core voltage for FPGA logic (e.g., 1.2V). 4 IO[0] General-purpose I/O pin, bidirectional. 5 IO[1] General-purpose I/O pin, bidirectional. 6 IO[2] General-purpose I/O pin, bidirectional. 7 IO[3] General-purpose I/O pin, bidirectional. 8 IO[4] General-purpose I/O pin, bidirectional. … … … 143 VCC Core voltage (supply to FPGA logic). 144 GND Ground connection for the device.(The table above is abbreviated for example purposes. The full pinout specification includes all 144 pins with detailed functions, such as Clock pins, Power pins, logic I/O, and auxiliary signals.)
Detailed Pin Functions: Power Pins: The power pins, such as VCC and VCCIO, are used to supply the necessary power for the FPGA's core logic and I/O buffers, respectively. Ground Pins (GND): These pins provide a return path for current in the circuit. I/O Pins (IO[0]-IO[143]): These pins can be used for general-purpose I/O, and they support both input and output. The I/O voltage levels are configurable based on the specific application requirements. Clock Pins (e.g., CLK0, CLK1): Dedicated pins for external clock inputs, crucial for timing and synchronization within the FPGA. Reset Pins (e.g., nCONFIG): Used for device configuration and resets. Configuration Pins: These pins are used to configure the FPGA device, typically during startup, with programming data and external device configuration.20 Frequently Asked Questions (FAQ) - EP3C25E144I7N:
1. What is the package type of EP3C25E144I7N? The EP3C25E144I7N comes in a 144-pin LQFP package.
2. How many I/O pins does the EP3C25E144I7N have? It has 144 pins in total, and the number of I/O pins will depend on the FPGA configuration.
3. What is the power supply voltage for the core logic in EP3C25E144I7N? The core logic voltage is typically 1.2V (VCC).
4. How are the I/O pins configured in EP3C25E144I7N? The I/O pins can be configured for input, output, or bidirectional operation, with programmable voltage levels.
5. What kind of clock inputs does the EP3C25E144I7N support? The device supports external clock inputs (e.g., CLK0, CLK1) for synchronization.
6. Can the EP3C25E144I7N be used for high-speed communication applications? Yes, with its high-speed I/O and logic elements, the EP3C25E144I7N can be used for high-speed communication and digital signal processing.
7. What is the maximum I/O voltage for the EP3C25E144I7N? The I/O voltage (VCCIO) is 3.3V, but it can be configured to support a variety of voltages for different I/O standards.
8. What is the maximum clock frequency for the EP3C25E144I7N? The maximum clock frequency is determined by the FPGA's configuration and logic elements, but typically it can reach up to 200 MHz.
9. How is the FPGA programmed? The FPGA is programmed via the JTAG interface or through external configuration devices like flash memory.
10. Can EP3C25E144I7N handle both logic and memory functions? Yes, it can handle both logic and memory functions through its logic elements, embedded RAM, and I/O capabilities.
11. What is the speed grade for the EP3C25E144I7N? The "I7N" suffix indicates a speed grade of -7, which means the device has a relatively high operating speed for general FPGA tasks.
12. Does EP3C25E144I7N have dedicated DSP blocks? Yes, the FPGA contains dedicated DSP blocks for performing high-speed arithmetic operations like multiplication.
13. How many logic elements are available in EP3C25E144I7N? The EP3C25E144I7N has approximately 25,000 logic elements (LEs) available.
14. Can EP3C25E144I7N be used in automotive applications? Yes, with proper temperature-grade and voltage configurations, the EP3C25E144I7N can be used in automotive and industrial applications.
15. What is the recommended temperature range for EP3C25E144I7N? The recommended temperature range is typically from 0°C to 85°C for commercial grade devices.
16. Is the EP3C25E144I7N suitable for consumer electronics? Yes, it is widely used in consumer electronics like TVs, set-top boxes, and other embedded systems.
**17. What is the primary function of the *nCONFIG* pin?** The nCONFIG pin is used for configuring the FPGA, usually by loading programming data from external memory.
18. Can the EP3C25E144I7N support multiple clock domains? Yes, it supports multiple clock domains and has features like clock domain crossing and phase-locked loops ( PLLs ).
19. What are the advantages of using EP3C25E144I7N over other FPGA models? It offers a balance of cost, performance, and I/O capabilities, making it suitable for a wide range of applications, from industrial to consumer electronics.
20. How is EP3C25E144I7N different from other Cyclone III FPGAs? The primary difference is the number of logic elements, available I/O pins, and the specific package options.
I hope this overview gives you a comprehensive understanding of the EP3C25E144I7N! The full pinout and functional descriptions are crucial for designing circuits with this FPGA. Feel free to ask if you need more detailed specifications or clarifications!