LC4256B-5TN100C

Complex Programmable Logic Devices Overview

The LC4256B-5TN100C is a Complex Programmable Logic Device (CPLD) belonging to the Lattice ispMACH 4000BV family. It features 256 macrocells organized into 16 logic blocks, providing high-density programmable logic in a compact form factor. The device supports system-in-system programming and operates with an internal supply voltage range of 3V to 3.6V. It offers a maximum propagation delay of 5 ns and includes 64 I/O pins. The component is housed in a 100-pin Thin Quad Flat Package (TQFP) with a 14x14 mm body size, suitable for surface-mount applications.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells across 16 Logic Blocks
• System-In-System Programming capability
• 5 ns Maximum Propagation Delay
• 64 User I/O Pins

Complex Programmable Logic Devices Applications

• High-speed interface bridging
• Address decoding and control logic
• State machine implementation
• Bus protocol conversion

Complex Programmable Logic Devices Part Context

This part is a member of the ispMACH 4000BV series, which utilizes non-volatile Flash technology for instant-on functionality without external configuration memory. The 'B' suffix typically denotes specific process or revision characteristics within the 4000BV family, distinct from the standard 4000V series. It serves as a drop-in replacement for older GAL and PAL devices requiring higher density.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible alternatives within the same package include other members of the ispMACH 4000BV family with equal or greater macrocell counts, such as the LC4512BV series. Cross-family replacements like the ispMACH 4000V series may require schematic review due to potential differences in I/O drive strength and power consumption profiles.