EPM7256AEQC208-5N

Complex Programmable Logic Devices Overview

The Altera EPM7256AEQC208-5N is a Complex Programmable Logic Device (CPLD) belonging to the MAX 7000A family. It features 256 macrocells organized into 16 Logic Array Blocks (LABs), providing approximately 5,000 usable gates. The device operates at a supply voltage of 3.3 V, with a range of 3.0 V to 3.6 V. It offers 164 I/O pins and supports a maximum operating frequency of 172.4 MHz with a typical propagation delay of 5.5 ns. Configuration data is stored in non-volatile EEPROM memory. The component is housed in a 208-pin PQFP package and is rated for commercial temperature operation from 0°C to +70°C.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells across 16 LABs with 5,000 usable gates
• 164 I/O pins in a 208-pin PQFP package
• 3.3 V single-supply operation with EEPROM storage
• Maximum frequency of 172.4 MHz and 5.5 ns propagation delay

Complex Programmable Logic Devices Applications

• High-density logic replacement in industrial control systems
• Address decoding and bus bridging in embedded designs
• State machine implementation for communication protocols

Complex Programmable Logic Devices Procurement Notes

Verify RoHS compliance status as listings vary between compliant and non-compliant variants. Confirm the specific suffix 'N' indicates lead-free composition if required by assembly standards. Check manufacturer lifecycle status, as this part may be discontinued or subject to last-time buy restrictions. Ensure ECAD models match the exact PQFP-208 footprint dimensions before integration.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells are sufficient for the design logic density. The 164 I/O count suits applications requiring extensive external connectivity within a 208-pin form factor. Choose the -5 speed grade for timing requirements up to 172.4 MHz. Verify that the 3.3 V I/O levels are compatible with all connected peripherals, as the MAX 7000A family is not inherently 5 V tolerant on all pins without specific configuration.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 7000A series, which succeeded the original MAX 7000 family. It utilizes second-generation Multiple Array MatriX (MAX) architecture optimized for 3.3 V operation. The EPM7256 variant represents a mid-range density option within the series, balancing gate count with pin availability. It serves as a drop-in replacement for older 5 V MAX 7000 devices where voltage translation is managed externally.

Complex Programmable Logic Devices Replacement Considerations

Pin-compatible alternatives include other EPM7256 variants with different packages or speed grades, such as EPM7256AEQC208-10. Cross-family replacements like MAX 7000S devices require voltage level adjustment due to 5 V operation.