ISPLSI 2064VE-135LT44I

Complex Programmable Logic Devices Overview

The ISPLSI2064VE-135LT44I is a high-density, 3.3V in-system programmable logic device from Lattice Semiconductor. It features 2000 PLD gates, 64 macrocells, and 64 I/O pins within a 44-pin TQFP package. The device utilizes E²CMOS technology to achieve a maximum operating frequency of 135 MHz with a propagation delay of 7.5 ns. Key architectural elements include four dedicated inputs, three dedicated clock pins, two global output enable pins, and a Global Routing Pool for complete interconnectivity. It supports non-volatile reprogramming via IEEE 1149.1 Boundary Scan.

Complex Programmable Logic Devices Feature Summary

• High-performance E²CMOS technology delivering 135 MHz fmax and 7.5 ns tpd
• In-system programmability (ISP) using the Boundary Scan Test Access Port (TAP)
• 64 Macrocells organized into two Megablocks with a Global Routing Pool
• 3.3V operation with TTL-compatible input levels and 5V tolerant I/Os

Complex Programmable Logic Devices Applications

• Complex state machine implementations requiring fast global interconnect
• Address decoding and wide input gating applications
• Mixed-voltage system interfaces supporting 5V signal levels
• Prototyping and field-upgradeable logic designs via ISP

Complex Programmable Logic Devices Procurement Notes

Verify the industrial temperature grade suffix 'I' (-40°C to +85°C) against design requirements. Confirm the 44-pin TQFP package matches the target footprint. Ensure programming hardware supports the specific ispLSI 2064VE family and IEEE 1149.1 boundary scan protocols for in-system configuration.

Complex Programmable Logic Devices Selection Notes

Select this component when 2000 PLD gates and 64 registers are required in a compact 44-pin form factor. The -135 speed grade offers a balance between performance and power consumption compared to faster variants. Consider the open-drain output option if wired-OR bus arbitration is needed. Verify that the 3.3V supply voltage aligns with the system architecture.

Complex Programmable Logic Devices Part Context

This part belongs to the ispLSI 2064VE family, which provides 100% functional and pinout compatibility with the older ispLSI 2064V devices while adding 3.3V operation and enhanced in-system programmability. The 'LT44I' designation specifically identifies the 135 MHz speed bin, 44-pin TQFP package, and industrial temperature range.

Complex Programmable Logic Devices Replacement Considerations

The standard commercial grade version ISPLSI2064VE-135LT44 is electrically compatible but lacks the extended temperature range. For legacy systems, the non-VE ispLSI2064V-135LT44 is pin-compatible but operates at 5V and lacks native 3.3V ISP support.