LC4064V-25TN48C

Complex Programmable Logic Devices Overview

The LC4064V-25TN48C is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor's ispMACH 4000V family. It features 64 macrocells and supports up to 38 I/Os within a 48-TQFP package. The device operates with an internal supply voltage of 3V to 3.6V and delivers a maximum propagation delay (tpd) of 2.5 ns, enabling system frequencies up to 400 MHz. It utilizes In-System Programmability (ISP) via JTAG and includes 5V-tolerant I/Os compatible with LVCMOS 3.3, LVCMOS 2.5, LVCMOS 1.8, LVTTTL, and PCI interfaces.

Complex Programmable Logic Devices Feature Summary

• High-performance logic with 64 macrocells and 2.5 ns maximum propagation delay
• Supports system clock frequencies up to 400 MHz
• In-System Programmability (ISP) capability via JTAG interface
• 5V-tolerant I/Os supporting multiple voltage standards including LVCMOS and LVTTTL

Complex Programmable Logic Devices Applications

• General-purpose digital logic replacement
• Bus protocol bridging and translation
• Address decoding and control logic generation
• State machine implementation in embedded systems

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'TN48C' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the design environment supports the ispMACH 4000V architecture for programming. Confirm that the 3V to 3.6V VCCINT requirement aligns with the target system power rails.

Complex Programmable Logic Devices Selection Notes

Select this component when 64 macrocells are sufficient for the logic density requirements. The TN48 package provides 38 usable I/Os; verify pin availability against the schematic. The '25' speed grade indicates a 2.5 ns delay, suitable for high-speed synchronous designs requiring up to 400 MHz operation. Consider the 5V tolerance if interfacing with legacy 5V logic without level shifters.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4000V series, which integrates features from the ispLSI 2000 and ispMACH 4A families. The 'V' designation typically denotes the 3.3V core voltage variant within the 4000 family, offering low dynamic power consumption while maintaining superfast performance characteristics compared to earlier generations.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements within the same family include the LC4064V-25TN44C (44-pin TQFP) or LC4064V-25TQ100 (100-pin TQFP), provided the I/O count and package footprint match the board layout. Verify that the alternative package offers the necessary number of available pins for the specific application design.