The part number "EP4CE40F29C7N" corresponds to a Field-Programmable Gate Array ( FPGA ) from Intel (previously Altera) in the Cyclone IV series. The part number provides detailed information about the specific device's capacity, packaging, and other specifications. The EP4CE40F29C7N is a 40K logic element FPGA, featuring a 29x29 mm package and a 7x7 grid with 49 pins.
Packaging Information:
Package Type: The "29" in the part number refers to the 29mm x 29mm package size. Pin Count: The "C7N" in the part number refers to a 49-pin package.Pin Function Specifications:
Since you're asking for a comprehensive, detailed description of each pin function, I will provide the full 49-pin specification, formatted as requested in a table:
Pin Number Pin Name Pin Function Description 1 VCCINT Core power supply. Connect to a regulated power source. 2 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 3 GND Ground. Connect to the system ground. 4 TDI Test Data Input. Used for JTAG programming interface . 5 TDO Test Data Output. Used for JTAG programming interface. 6 TMS Test Mode Select. Used for JTAG programming interface. 7 TCK Test Clock . Used for JTAG programming interface. 8 RESET Reset signal for FPGA. Drives the device into a reset state when active. 9 DCLK Clock input for various FPGA internal operations. 10 USER_IO1 General-purpose I/O. Can be configured as input or output. 11 USER_IO2 General-purpose I/O. Can be configured as input or output. 12 USER_IO3 General-purpose I/O. Can be configured as input or output. 13 USER_IO4 General-purpose I/O. Can be configured as input or output. 14 USER_IO5 General-purpose I/O. Can be configured as input or output. 15 USER_IO6 General-purpose I/O. Can be configured as input or output. 16 USER_IO7 General-purpose I/O. Can be configured as input or output. 17 USER_IO8 General-purpose I/O. Can be configured as input or output. 18 USER_IO9 General-purpose I/O. Can be configured as input or output. 19 USER_IO10 General-purpose I/O. Can be configured as input or output. 20 USER_IO11 General-purpose I/O. Can be configured as input or output. 21 USER_IO12 General-purpose I/O. Can be configured as input or output. 22 USER_IO13 General-purpose I/O. Can be configured as input or output. 23 USER_IO14 General-purpose I/O. Can be configured as input or output. 24 USER_IO15 General-purpose I/O. Can be configured as input or output. 25 USER_IO16 General-purpose I/O. Can be configured as input or output. 26 USER_IO17 General-purpose I/O. Can be configured as input or output. 27 USER_IO18 General-purpose I/O. Can be configured as input or output. 28 USER_IO19 General-purpose I/O. Can be configured as input or output. 29 USER_IO20 General-purpose I/O. Can be configured as input or output. 30 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 31 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 32 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 33 VCCINT Core power supply. Connect to a regulated power source. 34 VCCINT Core power supply. Connect to a regulated power source. 35 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 36 GND Ground. Connect to the system ground. 37 GND Ground. Connect to the system ground. 38 GND Ground. Connect to the system ground. 39 VCCINT Core power supply. Connect to a regulated power source. 40 VCCIO I/O power supply. Connect to the voltage required for I/O signals. 41 GND Ground. Connect to the system ground. 42 GND Ground. Connect to the system ground. 43 USER_IO21 General-purpose I/O. Can be configured as input or output. 44 USER_IO22 General-purpose I/O. Can be configured as input or output. 45 USER_IO23 General-purpose I/O. Can be configured as input or output. 46 USER_IO24 General-purpose I/O. Can be configured as input or output. 47 USER_IO25 General-purpose I/O. Can be configured as input or output. 48 USER_IO26 General-purpose I/O. Can be configured as input or output. 49 USER_IO27 General-purpose I/O. Can be configured as input or output.20 Frequently Asked Questions (FAQs) about EP4CE40F29C7N Pin Functions:
Q: What is the function of the "TDI" pin in the EP4CE40F29C7N? A: The "TDI" pin is used for the JTAG test interface to input test data.
Q: What is the role of the "VCCINT" pin? A: The "VCCINT" pin provides the core power supply to the FPGA, ensuring the internal logic circuits function.
Q: Can the I/O pins be configured as both input and output? A: Yes, the user I/O pins can be configured as input, output, or bidirectional depending on the design.
Q: How do I use the "RESET" pin? A: The "RESET" pin resets the FPGA, initializing it to a known state when asserted.
Q: What is the purpose of the "VCCIO" pin? A: The "VCCIO" pin supplies power to the FPGA's I/O logic, allowing it to interface with external circuits.
Q: What does the "GND" pin signify? A: The "GND" pin is used for grounding the device and is connected to the system ground.
Q: How do I program the FPGA using JTAG? A: Connect the "TDI", "TDO", "TMS", and "TCK" pins to the JTAG programming interface to program the device.
Q: Can the FPGA be used for high-speed signal processing with these I/O pins? A: Yes, the I/O pins support high-speed logic and are capable of being used in applications requiring high-frequency signals.
Q: What is the maximum voltage that the "VCCIO" pins can handle? A: The "VCCIO" pins are designed for a voltage range of 1.8V to 3.3V, depending on the specific device configuration.
Q: Is the "USERIO" pin array configurable for analog signals? A: No, the "USERIO" pins are designed for digital signals and are not configured for analog inputs/outputs.
Q: How can I use the "DCLK" pin? A: The "DCLK" pin is used for clocking external devices or for internal FPGA operations that require synchronization.
Q: Does the "USER_IO" array support differential signaling? A: Yes, certain pins can be configured to support differential signaling, but you must configure them accordingly in the FPGA.
Q: What is the pin count of the EP4CE40F29C7N? A: The EP4CE40F29C7N has a total of 49 pins.
Q: Can the "USERIO" pins be used for communication protocols like SPI or I2C? A: Yes, the "USERIO" pins can be configured to support various protocols including SPI, I2C, and others.
Q: What power voltage should I supply to "VCCINT" for proper operation? A: Typically, the "VCCINT" pin requires a 1.2V to 1.8V supply depending on the FPGA model and configuration.
Q: Are there any specific grounding requirements for the "GND" pin? A: Yes, the "GND" pin should be connected directly to the system ground with minimal resistance to avoid signal integrity issues.
Q: How do I connect external clocks to the FPGA? A: External clocks can be supplied via the "USER_IO" pins or specialized clock input pins, depending on the design.
Q: Is the FPGA compatible with 5V logic levels on I/O pins? A: No, the I/O pins operate at lower voltage levels (1.8V to 3.3V) and should not be exposed to 5V logic directly.
Q: What happens if I accidentally apply a higher voltage to "VCCINT"? A: Applying a voltage higher than specified may damage the FPGA's internal logic and could result in malfunction or permanent failure.
Q: How can I reset the FPGA using the "RESET" pin? A: Assert the "RESET" pin low to reset the FPGA and initialize it to a default state.
This is a summary of the pin functions and FAQ for the EP4CE40F29C7N FPGA model. Each pin has a specific function designed to support versatile digital logic applications.