LC4032C-5TN44I

Overview

The LC4032C-5TN44I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000V/B/C/Z family, manufactured by Lattice Semiconductor. It features 32 macrocells and 36 logic blocks, housed in a 44-pin Thin Quad Flat Package (TQFP). The device supports In-System Programming (ISP) via JTAG and utilizes EEPROM technology for non-volatile configuration storage. Electrical specifications include a maximum operating frequency of 400 MHz, a typical propagation delay of 5 ns, and independent output enable control. It operates within a supply voltage range of 3.0 V to 3.6 V and supports an industrial temperature range of 0 °C to 90 °C.

Feature Summary

• 32 Macrocells with 30 user I/Os and 2 dedicated inputs
• JTAG In-System Programmability (ISP) using EEPROM memory
• Maximum system clock frequency of 400 MHz
• 5 V tolerant I/O supporting LVCMOS 3.3, LVTTL, and PCI interfaces

Applications

• General-purpose digital logic replacement
• Bus protocol bridging and translation
• Address decoding and control logic generation
• State machine implementation in embedded systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'TN44I' corresponds to the TQFP package and industrial temperature grade. Check for RoHS compliance status as older revisions may differ. Ensure design files are compatible with current Lattice development tools such as Radiant or Diamond.

Selection Notes

Select this model when 32 macrocells are sufficient for the design complexity. The 400 MHz performance suits high-speed synchronous logic applications. Consider the 44-pin TQFP footprint for PCB layout constraints. Verify that the 3.3 V core voltage and 5 V tolerant I/O levels match the target system's power rails and interface requirements.

Part Context

This part belongs to the ispMACH 4000V/B/C/Z series, which blends architectures from previous ispLSI 2000 and ispMACH 4A families. The 'C' variant typically denotes a 3.3 V core voltage operation. The series is designed for low-power, high-density applications requiring predictable timing and first-time-fit routing capabilities.

Replacement Considerations

Direct pin-to-pin replacements within the same density include other variants from the LC4032V/B/C/Z family with different speed grades or packages. Cross-family migration to newer Lattice CPLDs requires schematic and code adaptation due to architectural differences.