EPM240T100A5N

Updated: 2026-09-16

Overview

The EPM240T100A5N is a Complex Programmable Logic Device (CPLD) from Intel's MAX 7000 series, originally developed by Altera. It provides 240 macrocells in a compact 100-pin Thin Quad Flat Package (TQFP), making it suitable for space-constrained applications. This 5V device is known for its balance of performance and power efficiency, offering non-volatile configuration and instant-on operation. The EPM240T100A5N is particularly valued in industrial environments for its reliability and noise immunity. Its architecture allows for efficient implementation of combinational and sequential logic, with fast pin-to-pin delays typically under 10ns. The device supports in-system programmability (ISP) through the industry-standard JTAG interface, enabling field updates without physical removal from the circuit board.

Structure and Working Principle

The EPM240T100A5N features a programmable logic array with 240 macrocells organized in 16 logic array blocks (LABs). Each macrocell contains programmable AND/OR logic and a configurable register that can operate as either a D, T, JK, or SR flip-flop. The device architecture uses a non-volatile EEPROM technology for configuration storage. Interconnect resources include a programmable interconnect array (PIA) that routes signals between LABs. The 100-pin package provides 80 user I/O pins with individual I/O control blocks supporting various voltage standards. Power management features include programmable power-saving modes that reduce standby current by up to 50% compared to full operation.

Key Features

Key technical specifications include 5,000 usable gates, 240 macrocells, and 80 available I/O pins. The device operates across industrial temperature ranges (-40°C to +85°C) with a maximum frequency of 125MHz. Built-in security features include a programmable security bit that prevents unauthorized reading of the configuration. The EPM240T100A5N offers superior signal integrity with programmable slew rate control and individual output enable for each pin. Package options include both commercial and industrial grade variants. Design support is available through Intel's Quartus Prime software (formerly MAX+PLUS II), which provides schematic entry, VHDL/Verilog synthesis, and timing simulation capabilities.

Application Areas

Primary applications include industrial control systems, where the device implements PLC functions, motor control algorithms, and safety interlocks. In telecommunications, it's used for protocol conversion, line interface logic, and signal conditioning. The automotive sector employs these CPLDs for dashboard controls and sensor interfaces. Embedded systems designers utilize the EPM240T100A5N for glue logic, bus interfacing, and peripheral control in single-board computers. Consumer electronics applications include display controllers, keyboard scanners, and power management logic. The device's reprogrammability makes it particularly valuable for prototyping and low-to-medium volume production runs where design flexibility is crucial.

Maintenance and Precautions

Proper handling requires ESD precautions - use grounded workstations and wrist straps during installation. Avoid exceeding absolute maximum ratings (7V input voltage, 125°C junction temperature). For reliable operation, maintain power supply voltages within ±5% of nominal and ensure proper decoupling (0.1μF ceramic capacitor per power pin pair). Long-term storage should be in moisture-resistant packaging with desiccant. When programming the device, verify voltage levels match between programmer and target board. For designs with frequent reprogramming cycles, consider the 10,000-programming-cycle endurance rating of the configuration EEPROM. Thermal management is generally not required for typical operating conditions due to the device's low power dissipation characteristics.

B2B Procurement Guide

When sourcing EPM240T100A5N devices, verify authenticity through authorized distributors to avoid counterfeit components. Lead times typically range from 4-8 weeks for standard orders, though some distributors maintain inventory. Consider purchasing programming services if in-house capability is unavailable. Volume pricing breaks commonly occur at 100, 500, and 1,000 unit quantities. For prototype quantities, consider purchasing pre-programmed development kits that include necessary cables and software. Evaluate alternative package options (CQFP, PQFP) if the standard TQFP is unsuitable for your assembly process. When comparing suppliers, confirm they provide full traceability documentation and have proper storage facilities to prevent moisture damage.