ISPLSI 1048EA-100LQ128

Complex Programmable Logic Devices Overview

The ispLSI 1048EA-100LQ128 is a high-density, in-system programmable complex programmable logic device (CPLD) from Lattice Semiconductor. It features 8,000 PLD gates, 96 universal I/O pins, eight dedicated inputs, and 288 registers organized into 48 Generic Logic Blocks (GLBs). The device utilizes E2CMOS technology with a maximum operating frequency of 100 MHz and a typical propagation delay of 10 ns. It supports user-selectable 3.3V or 5V I/O levels via the VCCIO pin and includes IEEE 1149.1 boundary scan testability. The component is housed in a 128-pin PQFP package.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 8,000 PLD gates, 288 registers, and four dedicated clock input pins.
• User-selectable 3.3V or 5V I/O voltage levels to support mixed-voltage systems.
• In-system programmability via ispJTAG using the IEEE 1149.1 JTAG interface.
• Programmable open-drain output options and individual output slew rate control.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• Address decoding and state machine implementation.
• Fast counter designs utilizing wide input gating capabilities.
• Prototyping and reprogrammable system interconnects.

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (100 for 100 MHz fmax) and package type (Q128 for PQFP) against design requirements. Confirm that the commercial temperature range meets operational needs. Ensure programming tools support the ispJTAG interface for in-system configuration. Check for end-of-life status as this series may be superseded by newer families.

Complex Programmable Logic Devices Selection Notes

Select the -100 speed grade for designs requiring a maximum frequency of 100 MHz. The Q128 suffix indicates a 128-pin Quad Flat Package. This device is functionally compatible with the ispLSI 1048C and 1048E series but adds user-selectable I/O voltage and open-drain outputs. Ensure sufficient GLB resources are available for the target logic complexity.

Complex Programmable Logic Devices Part Context

The ispLSI 1048EA is part of the ispLSI 1000E family, serving as a functional superset of the ispLSI 1048 architecture. It provides enhanced flexibility through mixed-voltage I/O support while maintaining compatibility with existing designs. The device is designed for applications requiring high density and reconfigurability in a non-volatile CPLD format.

Complex Programmable Logic Devices Replacement Considerations

The ispLSI 1048EA-170LQ128 offers a higher speed grade of 170 MHz with a 5.0 ns propagation delay. For lower speed requirements, the ispLSI 1048EA-125LQ128 provides a 125 MHz maximum frequency. Both variants share the same package and logical structure.