ISPLSI 1048EA-100LT128

Complex Programmable Logic Devices Overview

The ispLSI 1048EA-100LT128 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, 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 Thin Quad Flat Package (TQFP) and operates within a commercial temperature range.

Complex Programmable Logic Devices Feature Summary

• High-density architecture with 8,000 PLD gates, 96 I/Os, and 288 registers.
• In-system programmability via IEEE 1149.1 JTAG interface for rapid prototyping.
• User-selectable 3.3V or 5V I/O voltage levels through the VCCIO pin.
• Programmable open-drain output option and slew rate control to minimize switching noise.

Complex Programmable Logic Devices Applications

• Complex glue logic replacement in digital systems.
• State machine implementation requiring fast counters and address decoders.
• Mixed-voltage system interfacing due to selectable I/O levels.
• Prototyping and field reconfigurable logic designs.

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (100 for 100 MHz) and package type (LT128 for TQFP) against design requirements. Confirm that the commercial temperature range meets environmental specifications. Ensure programming tools support the ispJTAG interface for in-system configuration.

Complex Programmable Logic Devices Selection Notes

Select this model when 8,000 PLD gates and 96 I/Os are required with in-system programmability. The -100 speed grade provides a 10 ns propagation delay suitable for moderate-speed applications. Choose the LT128 package for thin profile surface-mount assembly. Verify compatibility with existing 3.3V or 5V logic families using the VCCIO configuration.

Complex Programmable Logic Devices Part Context

The ispLSI 1048EA is a functional superset of the ispLSI 1048E architecture, adding user-selectable 3.3V/5V I/O and open-drain outputs. It maintains functional compatibility with the ispLSI 1048C and 1048E series while offering enhanced flexibility for mixed-voltage designs and improved diagnostic capabilities through full boundary scan testing.

Complex Programmable Logic Devices Replacement Considerations

Functionally compatible replacements include the ispLSI 1048E and ispLSI 1048C series. For new 5V designs, Lattice recommends considering the ispMACH 4A5 family as an alternative platform.