LC4128V-75T100I

Complex Programmable Logic Devices Overview

The LC4128V-75T100I is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000V family. It features 128 macrocells organized into 8 Logic Array Blocks (LABs) and provides 64 I/O pins in a TQFP-100 package. The device operates at a maximum frequency of 333 MHz with a maximum propagation delay of 7.5 ns. It supports an operating supply voltage range of 3 V to 3.6 V, typically 3.3 V, with a maximum operating current of 12 mA. The component is rated for an industrial temperature range from -40°C to +105°C.

Complex Programmable Logic Devices Feature Summary

• System-in-Programmable (ISP) capability allowing in-system programming via JTAG
• High-density architecture with 128 macrocells and 8 LABs for complex logic implementation
• EEPROM-based non-volatile configuration memory ensuring immediate operation upon power-up

Complex Programmable Logic Devices Applications

• Interface bridging between different voltage domains or protocol converters
• Address decoding and chip select generation in embedded systems
• State machine implementation for control logic in industrial automation
• Replacement for legacy GALs or PALs in existing hardware designs

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +105°C). Confirm RoHS compliance status as some older stock may vary. Check for moisture sensitivity level requirements during storage and handling. Ensure the TQFP-100 footprint matches the target PCB layout. Validate that the design tool version supports the ispMACH 4000V family for proper compilation.

Complex Programmable Logic Devices Selection Notes

Select this part when 128 macrocells are sufficient for the logic density requirements. Choose the TQFP-100 package if surface mount space allows for a 14x14 mm footprint. Opt for the 'I' suffix variant only if the application environment exceeds commercial temperature limits. Compare against the LC4128Z series if lower power consumption is critical, noting potential differences in I/O drive strength and voltage compatibility.

Complex Programmable Logic Devices Part Context

This component belongs to the Lattice ispMACH 4000V family, designed for high-performance, low-power CPLD applications. It serves as a successor to earlier ispMACH 4000 variants, offering improved speed and density. The family is widely used in mixed-signal systems where reliable, reprogrammable logic is needed without the complexity of FPGA development flows.

Complex Programmable Logic Devices Replacement Considerations

The LC4128V-75TN100C is a commercial temperature grade alternative within the same package and functionality. For pin-compatible upgrades with higher performance, consider the LC4128ZC-75TN100I series, which offers similar density but optimized for lower power consumption. Verify that any substitute maintains the same EEPROM configuration type and ISP interface support.