EPM9320LI84-20

Complex Programmable Logic Devices Overview

The Altera EPM9320LI84-20 is a Complex Programmable Logic Device (CPLD) belonging to the MAX 9000 family. It features 32 macrocells and supports up to 67 I/O pins within an 84-pin PLCC package. The device operates at a maximum frequency of 50 MHz with a typical propagation delay of 20 ns. It utilizes non-volatile EEPROM technology for configuration, allowing for in-system programmability. The component is designed for industrial temperature ranges and supports both 3.3V and 5V supply voltages, making it suitable for legacy system integration and general-purpose logic applications.

Complex Programmable Logic Devices Feature Summary

• 32 Macrocells with 67 available I/Os in an 84-pin PLCC package
• Non-volatile EEPROM memory architecture for instant-on operation
• Maximum operating frequency of 50 MHz with 20 ns typical propagation delay
• Supports 3.3V and 5V VCCIO levels for flexible interface compatibility

Complex Programmable Logic Devices Applications

• Address decoding and bus bridging in embedded systems
• Interface translation between different voltage domains
• State machine implementation for control logic
• Replacement for legacy GAL or PAL devices in existing designs

Complex Programmable Logic Devices Part Context

The EPM9320LI84-20 is part of Altera's MAX 9000 family, which succeeded the earlier MAX 7000 series. This family introduced higher density options while maintaining the proven EEPROM-based non-volatile architecture. The 'L' suffix indicates the low-power variant, and 'I84' specifies the industrial temperature range and 84-pin PLCC package. This component serves as a bridge between simple discrete logic and high-density FPGAs.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements may be limited due to the discontinuation status of many MAX 9000 devices. Designers should verify pinout compatibility with newer MAX 10 or Agilex families if migrating, though these require significant design changes. After-market suppliers may offer surplus stock, but reliability and authenticity verification are critical.