LC5256MB-75F256C

Complex Programmable Logic Devices Overview

The LC5256MB-75F256C is a Complex Programmable Logic Device (CPLD) belonging to the ispXPLD 5000MX family, manufactured by Lattice Semiconductor Corporation. It features 256 macrocells and operates with a maximum propagation delay of 4.0 ns. The device supports In-System Programmability via IEEE 1532 and utilizes a Multi-Function Block architecture capable of SuperWIDE logic, arithmetic functions, and flexible memory configurations including SRAM, FIFO, and Ternary CAM modes. It operates at a core voltage of 2.5V and includes sysCLOCK PLLs for timing control.

Complex Programmable Logic Devices Feature Summary

• ispXPLD 5000MX Architecture: Features Flexible Multi-Function Blocks supporting SuperWIDE logic, arithmetic, and memory modes.
• High-Speed Performance: Achieves a maximum operating frequency of 300 MHz with 4.0 ns pin-to-pin delays.
• In-System Programmability: Supports instant-on capability and infinite reconfiguration via IEEE 1532 or sysCONFIG interfaces.
• Mixed Voltage I/O: Includes sysIO interfaces compatible with LVCMOS 1.8, 2.5, 3.3V, SSTL, HSTL, PCI, GTL+, LVDS, and LVTTL standards.

Complex Programmable Logic Devices Applications

• High-speed interface bridging in mixed-voltage systems
• Buffering and protocol conversion using FIFO modes
• Arithmetic processing and signal conditioning
• Secure design implementation with instant-on capabilities

Complex Programmable Logic Devices Procurement Notes

Verify component status prior to procurement. Product Change Notification #09-10 indicates that select devices within the ispXPLD 5000MX family have been discontinued. Confirm current availability and lifecycle status directly with the manufacturer or authorized distributors before finalizing design-in decisions.

Complex Programmable Logic Devices Selection Notes

Select this device for applications requiring deterministic timing and low power consumption in a 2.5V environment. Ensure the design utilizes the 256 fpBGA package constraints. Consider the 5000MV series if 3.3V operation is required, or the 5000MC series for 1.8V core voltage requirements, as these are alternative densities within the same architectural family.

Complex Programmable Logic Devices Part Context

This component is part of the ispXPLD 5000MX family, which extends the SuperWIDE ispMACH 5000 architecture by adding flexible memory capabilities. The family includes variants such as the 5256MX, 5512MX, 5768MX, and 51024MX, offering densities from 256 to 1,024 macrocells. The LC5256MB specifically denotes the 256-macrocell density with 2.5V core voltage operation.

Complex Programmable Logic Devices Replacement Considerations

No direct public substitute part numbers are listed in the provided documentation. Designers may consider migration to other Lattice families such as ispMACH 4000V or newer FPGA platforms depending on specific performance and feature requirements.