LC4256B-10FN256AI

Complex Programmable Logic Devices Overview

The LC4256B-10FN256AI is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000ZE family. It features 256 macrocells, 16 Logic Array Blocks (LABs), and 160 I/O pins housed in a 256-pin FineLine BGA package. The device operates at a maximum frequency of 322 MHz with a propagation delay of 10 ns. It supports an operating voltage range of 1.65 V to 1.95 V and functions within an industrial temperature range of -40°C to +85°C.

Complex Programmable Logic Devices Feature Summary

• High-performance architecture with 256 macrocells and 16 LABs supporting up to 322 MHz operation.
• Integrated non-volatile configuration memory for instant-on functionality without external boot devices.
• Supports in-system programming via JTAG interface for flexible design updates.
• Low power consumption with typical active current of 2.5 mA at 1.8V.

Complex Programmable Logic Devices Applications

• High-density logic replacement for legacy discrete logic circuits.
• Protocol conversion and bridging between different data bus standards.
• Address decoding and control logic in embedded systems.
• State machine implementation for industrial automation controllers.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'A' against the manufacturer's datasheet to confirm it denotes the industrial temperature grade (-40°C to +85°C). Confirm package availability as the FineLine BGA-256 may have limited stock due to the component's age. Ensure EOL status is checked with authorized distributors before finalizing procurement plans.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells are required with a high pin count of 160 I/Os. Compare against the LC4256C series if higher performance or updated manufacturing processes are needed. Verify that the 1.8V core voltage aligns with the system's power supply rails. Consider the FT256 package dimensions for PCB layout constraints.

Complex Programmable Logic Devices Part Context

This component belongs to the Lattice ispMACH 4000ZE family, designed for high-density CPLD applications. It serves as a successor to older GAL and PAL devices, offering reprogrammability and higher integration levels. The 'B' variant typically indicates a specific generation or revision within the 4000ZE line, focusing on low power and high speed.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements include other members of the LC4256 family such as LC4256C-10FT256BI, provided the package type matches. Verify electrical parameters like propagation delay and voltage ranges when substituting with newer generations like the MachXO series, which may require software migration.