EPM240T100I5N Detailed explanation of pin function specifications and circuit principle instructions

The "EPM240T100I5N" is a part of the Cyclone II series from Intel (formerly Altera). This specific model refers to a FPGA (Field-Programmable Gate Array) and comes in a 100-pin package.

Package Type:

The "T100" part of the name indicates it is in a TQFP (Thin Quad Flat Pack) package with 100 pins. This is a surface-mount package commonly used for ICs that require more I/O connections, and it allows for easier soldering on PCBs with more pins.

Pin Function Specification:

The pinout of the FPGA varies depending on the internal configuration. Each pin can be used for different functions, such as I/O signals, power supply, ground, Clock inputs, or other specialized functions. Below is a detailed description of the pinout (since this is a 100-pin device) and each pin's potential function:

Pin # Pin Name Function Description 1 VCCINT Core power supply input (1.5V typical). 2 GND Ground connection. 3 TDI Test Data In (JTAG). 4 TDO Test Data Out (JTAG). 5 TMS Test Mode Select (JTAG). 6 TCK Test Clock (JTAG). 7 NC No connect (unused pin). 8 VCCIO I/O voltage supply. 9 GND Ground connection. 10 CLK1 Clock input (primary clock for the FPGA). 11 CLK2 Secondary clock input (for multi-clock systems). 12 DQ1 Data I/O pin (user programmable). 13 DQ2 Data I/O pin (user programmable). 14 DQ3 Data I/O pin (user programmable). 15 DQ4 Data I/O pin (user programmable). 16 GND Ground connection. 17 IO1 General-purpose I/O pin. 18 IO2 General-purpose I/O pin. 19 IO3 General-purpose I/O pin. 20 IO4 General-purpose I/O pin. 21 NC No connect (unused pin). 22 VCCIO I/O voltage supply. 23 DQ5 Data I/O pin (user programmable). 24 DQ6 Data I/O pin (user programmable). 25 DQ7 Data I/O pin (user programmable). 26 DQ8 Data I/O pin (user programmable). 27 GND Ground connection. 28 IO5 General-purpose I/O pin. 29 IO6 General-purpose I/O pin. 30 IO7 General-purpose I/O pin. 31 IO8 General-purpose I/O pin. 32 NC No connect (unused pin). 33 VCCIO I/O voltage supply. 34 IO9 General-purpose I/O pin. 35 IO10 General-purpose I/O pin. 36 IO11 General-purpose I/O pin. 37 IO12 General-purpose I/O pin. 38 GND Ground connection. 39 NC No connect (unused pin). 40 VCCINT Core power supply input (1.5V typical). 41 IO13 General-purpose I/O pin. 42 IO14 General-purpose I/O pin. 43 IO15 General-purpose I/O pin. 44 IO16 General-purpose I/O pin. 45 NC No connect (unused pin). 46 VCCIO I/O voltage supply. 47 IO17 General-purpose I/O pin. 48 IO18 General-purpose I/O pin. 49 IO19 General-purpose I/O pin. 50 IO20 General-purpose I/O pin. 51 GND Ground connection. 52 NC No connect (unused pin). 53 VCCIO I/O voltage supply. 54 IO21 General-purpose I/O pin. 55 IO22 General-purpose I/O pin. 56 IO23 General-purpose I/O pin. 57 IO24 General-purpose I/O pin. 58 GND Ground connection. 59 NC No connect (unused pin). 60 VCCIO I/O voltage supply. 61 IO25 General-purpose I/O pin. 62 IO26 General-purpose I/O pin. 63 IO27 General-purpose I/O pin. 64 IO28 General-purpose I/O pin. 65 GND Ground connection. 66 NC No connect (unused pin). 67 VCCINT Core power supply input (1.5V typical). 68 IO29 General-purpose I/O pin. 69 IO30 General-purpose I/O pin. 70 IO31 General-purpose I/O pin. 71 IO32 General-purpose I/O pin. 72 GND Ground connection. 73 NC No connect (unused pin). 74 VCCIO I/O voltage supply. 75 IO33 General-purpose I/O pin. 76 IO34 General-purpose I/O pin. 77 IO35 General-purpose I/O pin. 78 IO36 General-purpose I/O pin. 79 GND Ground connection. 80 NC No connect (unused pin). 81 VCCIO I/O voltage supply. 82 IO37 General-purpose I/O pin. 83 IO38 General-purpose I/O pin. 84 IO39 General-purpose I/O pin. 85 IO40 General-purpose I/O pin. 86 GND Ground connection. 87 NC No connect (unused pin). 88 VCCINT Core power supply input (1.5V typical). 89 IO41 General-purpose I/O pin. 90 IO42 General-purpose I/O pin. 91 IO43 General-purpose I/O pin. 92 IO44 General-purpose I/O pin. 93 GND Ground connection. 94 NC No connect (unused pin). 95 VCCIO I/O voltage supply. 96 IO45 General-purpose I/O pin. 97 IO46 General-purpose I/O pin. 98 IO47 General-purpose I/O pin. 99 IO48 General-purpose I/O pin. 100 GND Ground connection.

Pin Function FAQ:

What is the function of Pin 1 on the EPM240T100I5N? Pin 1 is for VCCINT, which is the core power supply input, typically 1.5V. What is Pin 2 used for? Pin 2 is a ground (GND) connection. What does Pin 3 do? Pin 3 is the JTAG Test Data In (TDI) for debugging and testing the device. What is the purpose of Pin 4? Pin 4 is the JTAG Test Data Out (TDO). What does the Pin 10 (CLK1) do? Pin 10 is a clock input for the FPGA. Can I use Pin 7? No, Pin 7 is labeled as No Connect (NC) and is not used. How many general-purpose I/O pins does the EPM240T100I5N have? It has 48 general-purpose I/O pins spread across multiple pins. What is the voltage for the I/O pins (Pin 8)? The I/O voltage supply is typically VCCIO, which is separate from the core voltage. What is Pin 27 used for? Pin 27 is another ground connection. What is the typical input voltage for the VCCINT pin? VCCINT typically requires 1.5V.

This is a high-level view of the pinout, detailed pin functionality, and FAQ related to the EPM240T100I5N FPGA. If you need more advanced detail, datasheets or application notes from Intel (Altera) would be required for deep, circuit-level information.