LC4256C-75F256BC

Complex Programmable Logic Devices Overview

The LC4256C-75F256BC is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000C family, manufactured by Lattice Semiconductor. It features 256 macrocells organized into 16 Logic Array Blocks (LABs). The device supports System In-Programmability (ISP) and operates with an internal supply voltage range of 2.3V to 2.7V. It offers a maximum propagation delay of 7.5ns and provides 128 I/O pins. The component is housed in a 256-pin FineLine BGA package and is rated for operation within a junction temperature range of 0°C to +90°C.

Complex Programmable Logic Devices Feature Summary

• ispMACH 4000C architecture with 256 macrocells and 16 LABs
• System In-Programmability (ISP) capability
• Maximum propagation delay of 7.5ns
• 128 I/O pins available

Complex Programmable Logic Devices Applications

• High-density logic replacement
• Bus bridging and protocol conversion
• Address decoding and control logic

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'BC' against official Lattice documentation to confirm exact temperature grade and packaging specifications. Confirm RoHS compliance status as product variants may differ. Check current lifecycle status, as older CPLD families may be subject to discontinuation or obsolescence notices.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells are required with a 7.5ns speed grade. Ensure the design accommodates the 2.3V-2.7V internal VCC core voltage requirement. Verify that the 256-pin FineLine BGA footprint matches the PCB layout constraints and that 128 I/Os meet interface requirements.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000C series, which succeeded the 4000B family. It utilizes EEPROM technology for non-volatile configuration storage. The 4000C series generally offers improved performance and density compared to earlier generations while maintaining pin compatibility with select legacy designs.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements within the same package may include other members of the ispMACH 4000C family with different macrocell counts, such as the LC4128C or LC4256V, provided electrical parameters like voltage and speed grades are compatible.