LC4064B-25T48C

Complex Programmable Logic Devices Overview

The LC4064B-25T48C is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000 family. It features 64 macrocells organized into 4 Logic Array Blocks (LABs). The device operates with a maximum frequency of 400 MHz and exhibits a propagation delay of 2.5 ns. It utilizes a 1.8 V core voltage for low dynamic power consumption while supporting 5 V compatible I/O standards including LVCMOS 3.3, LVCMOS 2.5, LVCMOS 1.8, and LVTTL. The component is housed in a 48-pin TQFP package.

Complex Programmable Logic Devices Feature Summary

• High-performance architecture with 400 MHz maximum operating frequency and 2.5 ns typical delay time.
• Low-power design utilizing 1.8 V core voltage with 5 V tolerant I/O interfaces.
• Non-volatile configuration using EEPROM technology for instant-on operation.
• Supports In-System Programming (ISP) via JTAG interface.

Complex Programmable Logic Devices Applications

• General-purpose logic replacement for legacy TTL/CMOS circuits.
• Interface bridging between different voltage domains (e.g., 5V to 1.8V systems).
• Control logic for embedded systems requiring non-volatile configuration.

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' against official Lattice documentation to confirm it denotes a standard commercial grade or a specific variant within the 4000 series. Ensure the T48 package designation matches the required 48-pin Thin Quad Flat Package dimensions. Confirm RoHS compliance status if environmental regulations apply to the target assembly process.

Complex Programmable Logic Devices Selection Notes

Select this component when 64 macrocells are sufficient for the design complexity. The 2.5 ns speed grade is suitable for moderate-speed control applications. Consider the 48-pin TQFP package constraints regarding board space and thermal dissipation. Verify that the 1.8 V core supply is available in the system design alongside the required 5 V I/O levels.

Complex Programmable Logic Devices Part Context

This part belongs to the Lattice ispMACH 4000 family, which integrates features from the earlier ispLSI 2000 and ispMACH 4000A architectures. The family is characterized by superfast performance, low power consumption, and high density relative to its pin count. The 4064 variant specifically offers a balance of logic resources and I/O availability for compact designs.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements include other members of the ispMACH 4000 family such as the LC4064C-25T48C or LC4064Z-25T48C, provided pin compatibility and electrical specifications align. Cross-family migration to newer Lattice CPLDs requires schematic review and potential PCB redesign due to architectural differences.