LC4512B-75TN176I

Complex Programmable Logic Devices Overview

The LC4512B-75TN176I is a Complex Programmable Logic Device (CPLD) belonging to the ispMACH 4000BV family, manufactured by Lattice Semiconductor Corporation. It features 32 macrocells and 512 usable macrocells for logic implementation within a 176-pin Thin Quad Flat Package (TQFP). The device supports in-system programming via the JTAG interface and operates with an internal supply voltage range of 3V to 3.6V. The maximum propagation delay is specified at 7.5 ns, ensuring performance suitable for various digital control applications.

Complex Programmable Logic Devices Feature Summary

• ispMACH 4000BV architecture providing non-volatile Flash technology for instant-on capability
• In-system programmability via JTAG interface supporting multiple design tools
• High-density I/O configuration with 128 available input/output pins
• Operational temperature range extending from 0°C to 85°C for commercial environments

Complex Programmable Logic Devices Applications

• Protocol conversion and bridging between different data bus standards
• Address decoding and memory mapping in embedded systems
• State machine implementation for industrial control logic
• Clock distribution and buffering for synchronous digital circuits

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade variant when sourcing replacements. Confirm package integrity upon receipt, as the 176-TQFP is sensitive to mechanical stress during handling. Ensure compatibility with existing JTAG programming infrastructure before finalizing procurement orders.

Complex Programmable Logic Devices Selection Notes

Select this component when a moderate logic density with high pin count is required without the complexity of FPGA routing resources. The 7.5 ns speed grade offers a balance between performance and power consumption. Consider the 176-pin footprint constraints and verify that the target PCB layout accommodates the 24x24 mm body dimensions effectively.

Complex Programmable Logic Devices Part Context

This part is part of the legacy ispMACH 4000 series, designed to replace older GAL and PAL devices with higher density and reprogrammability. While newer families like MachXO or CrossLink exist, the 4000 series remains relevant for cost-sensitive designs requiring robust, non-volatile logic functions.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements may be limited due to architectural differences. Verify functional equivalence regarding macrocell count and I/O drive strength against alternatives such as the LC4512V series, noting potential differences in speed grades and package availability.