LC4064B-5T44C
LC4064B-5T44C - 64-Macro 5ns ISP CPLD | Lattice Semiconductor
Lattice Semiconductor LC4064B-5T44C is a 64-macro complex programmable logic device with a 5 ns speed grade, supplied in a 44-pin TQFP package. It belongs to the ispMACH 4000B SuperFAST high-density PLD family and supports in-system programming with 3.3 V, 2.5 V, and 1.8 V supply options. The combination of 64 configurable logic macros, in-system programmability, and a 5 ns device designation makes the device suitable for compact control, interface, decode, and glue-logic implementations.
A CPLD is a programmable logic device that combines programmable AND/OR logic structures with nonvolatile configuration storage. Within the semiconductor hierarchy, a CPLD is a programmable-logic IC, a member of the FPGA and CPLD category, and a practical alternative to a small FPGA when designs require straightforward combinational and sequential logic, deterministic configuration, and a modest pin count. The LC4064B family specifically targets high-density SuperFAST applications where board-level control and interface logic must be consolidated without using a large programmable-logic device.
Verified device information identifies 64 macro cells, a 5 ns speed designation, a 44-TQFP package, and in-system programming capability. The family description also confirms compatibility with 3.3 V, 2.5 V, and 1.8 V supply environments. In-system programming allows a board designer to configure or update the logic after PCB assembly, while the TQFP package supports conventional surface-mount assembly and inspection. Exact logic macro architecture, I/O counts, electrical limits, and timing tables are not present in the supplied records and must be confirmed in the manufacturer datasheet before design release.
The LC4064B-5T44C is positioned for designs that need more logic density and a faster speed grade than slower Lattice CPLD options without moving to a substantially different device family. Its 64 macro cells provide a defined capacity for control-state machines, address decoding, bus arbitration, signal conditioning, and peripheral interfacing. Because the available records do not include the complete timing tables or I/O standards, system timing should be evaluated against the datasheet rather than inferred solely from the 5 ns family speed designation.
Typical uses include industrial control logic, embedded peripheral interfaces, compact communications equipment, instrumentation, and general-purpose digital system support. A CPLD can consolidate decoding and control functions that would otherwise occupy several fixed-function ICs. It can also provide a stable interface between a microcontroller, memory, display controller, or communication peripheral, provided the device voltage, pin assignment, timing, and I/O standards are compatible with the surrounding circuit.
The main design consideration is verification of the exact package pinout and electrical limits before layout. Designers should confirm which pins support in-system programming, determine the required VCC levels, and check every connected I/O against the LC4064B datasheet. Because no authoritative pin-by-pin pinout was included in the supplied data, the pinout field is intentionally null rather than reproducing unverified pin names.
This page consolidates verified distributor identifiers, package and speed information, sourcing links, replacement constraints, and practical selection guidance that are not available from a simple distributor search result alone. It also distinguishes verified facts from unavailable electrical details, helping engineers evaluate LC4064B-5T44C without mistaking generic CPLD assumptions for device-specific specifications.
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