LC4032B-10TN44I

Overview

The LC4032B-10TN44I is a complex programmable logic device (CPLD) from the ispMACH 4000 family by Lattice Semiconductor. It features 32 macrocells, 36 logic blocks, and 30 user I/O pins housed in a 44-pin TQFP package. The device utilizes EEPROM technology for non-volatile configuration and supports in-system programming. It operates within a voltage range of 3V to 3.6V and an industrial temperature range of 0°C to 70°C. The maximum propagation delay is specified at 10 ns, with a maximum operating frequency of 400 MHz.

Feature Summary

• 32 Macrocells and 36 Logic Blocks for flexible logic implementation
• EEPROM-based non-volatile memory allowing instant-on operation
• In-System Programmability (ISP) for easy field updates
• Industrial temperature range (0°C to 70°C) and 3.3V supply

Applications

• Address decoding and bus bridging
• State machine implementation
• Logic replacement for legacy TTL/CMOS circuits
• Interface translation between different voltage domains

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (0°C to 70°C) compared to commercial variants. Confirm the package type is TQFP-44. Check for RoHS compliance status as per current manufacturing revisions. Ensure design files are compatible with the ispMACH 4000 family architecture.

Selection Notes

Select this component when 32 macrocells are sufficient for the design logic requirements. Compare against the LC4032V series if lower power consumption is critical, noting that the B series may have different electrical characteristics. Verify that the 10 ns speed grade meets the timing constraints of the target application. Consider the TN44 package size relative to PCB space limitations.

Part Context

This part belongs to the ispMACH 4000 family, which succeeded the ispLSI series. It is designed to replace complex discrete logic gates and small PLDs. The family is known for high density and low power consumption relative to older technologies. It serves as a drop-in replacement for many GAL and PAL devices.

Replacement Considerations

Direct pin-compatible replacements include other members of the ispMACH 4000 family such as the LC4032V or LC4032Z series, provided speed grades and temperature ranges match. Verify that the alternative device maintains the same EEPROM configuration method and I/O drive strengths.