LC4256B-5FTN256BC

Complex Programmable Logic Devices Overview

The LC4256B-5FTN256BC is a Complex Programmable Logic Device (CPLD) belonging to the Lattice ispMACH 4000B family. It features 16 macrocells and 256 usable macrocells for logic implementation, housed in a 256-pin FineLine BGA package. The device supports system-in-programmability and operates with an internal supply voltage range of 3V to 3.6V. It exhibits a maximum propagation delay of 5 ns and functions within a junction temperature range of 0°C to 90°C.

Complex Programmable Logic Devices Feature Summary

• ispMACH 4000B architecture providing 256 macrocells and 16 macrocell blocks
• System-in-programmable capability for flexible design updates
• High-speed performance with a maximum propagation delay of 5 ns
• Available in a 256-pin FineLine BGA package suitable for high-density applications

Complex Programmable Logic Devices Applications

• High-density digital logic replacement
• Address/data buffering and bridging
• Protocol conversion interfaces
• Complex glue logic integration

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'BC' against the manufacturer's official datasheet to confirm the exact temperature grade and packaging specifications. Ensure that the required programming toolchain supports the ispMACH 4000B family for successful configuration. Confirm RoHS compliance status if environmental regulations apply to the target assembly process.

Complex Programmable Logic Devices Selection Notes

Select this component when a design requires moderate logic density with guaranteed timing performance under 5 ns. The 256-pin BGA package is appropriate for systems needing a high number of I/O connections within a compact footprint. Compare against the LC4256V series if lower power consumption is a primary constraint over raw speed.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000B CPLD family, which succeeded the earlier 4000A series. These devices are designed to replace complex discrete logic gates and standard PLDs. The family offers non-volatile configuration, allowing the device to retain its program without external memory, simplifying system board design compared to volatile FPGA solutions.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements may include other variants within the LC4256B family with different speed grades or package options. Verify electrical compatibility before substituting.