LC4032B-75TN48I

Overview

The LC4032B-75TN48I is a Complex Programmable Logic Device (CPLD) from the ispMACH 4000B family, manufactured by Lattice Semiconductor. It features 32 macrocells and 36 logic blocks, housed in a 48-pin Thin Quad Flat Package (TQFP). The device supports In-System Programmability (ISP) via JTAG and offers a maximum operating frequency of 111 MHz with a propagation delay of 7.5 ns. It operates on a 3.3V supply voltage and includes EEPROM memory for non-volatile configuration storage.

Feature Summary

• 32 Macrocells and 36 Logic Blocks for high-density logic implementation
• In-System Programmability (ISP) support via JTAG interface
• Maximum Operating Frequency (Fmax) of 111 MHz
• EEPROM-based non-volatile configuration memory

Applications

• General-purpose digital logic replacement
• Address decoding and bus bridging
• State machine implementation
• Interface translation between different voltage domains

Procurement Notes

Verify the specific suffix 'TN48I' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure that the design environment supports the ispMACH 4000B family architecture. Check for RoHS compliance status as indicated in official documentation, noting that older revisions may have different environmental certifications.

Selection Notes

Select this component when a moderate density of logic resources (32 macrocells) is required with guaranteed non-volatile configuration. Compare against the LC4032V series if higher speed (up to 400 MHz) is necessary, as the 'B' variant offers lower performance but potentially different power characteristics. Ensure the TQFP-48 package fits the PCB footprint constraints.

Part Context

This part belongs to the ispMACH 4000B family, which succeeded the original ispMACH 4000A series. It is designed for applications requiring small form factors and low power consumption compared to larger CPLDs or FPGAs. The family is known for its ease of use and fast turnaround times for design iterations due to ISP capabilities.

Replacement Considerations

Direct replacements include other parts within the LC4032B family with different speed grades or package options, such as LC4032B-75VQ44I. Cross-family upgrades to the LC4032V series are possible but require verification of timing constraints and pin compatibility.