LC4128B-10TN100I

Complex Programmable Logic Devices Overview

The LC4128B-10TN100I is a complex programmable logic device (CPLD) from the Lattice ispMACH 4000B family. It features 128 macrocells and supports up to 64 I/O pins in a 100-pin TQFP package. The device operates with supply voltages of 3.3V, 2.5V, or 1.8V and offers a maximum propagation delay of 10 ns. Key electrical parameters include a maximum operating frequency of 100 MHz and an on-chip voltage regulator for internal core power. It supports system-in-programmability via JTAG.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with enhanced architecture for high-density logic implementation
• Supports 3.3V, 2.5V, and 1.8V I/O standards with on-chip voltage regulation
• System-in-Programmability (SIP) capability using IEEE 1149.1 JTAG interface
• Maximum propagation delay of 10 ns with up to 100 MHz operating frequency

Complex Programmable Logic Devices Applications

• High-speed data bus interfacing and protocol conversion
• Address decoding and control logic in embedded systems
• State machine implementation for industrial automation controllers
• Replacement for legacy GAL devices in existing PCB designs

Complex Programmable Logic Devices Procurement Notes

Verify the specific suffix 'B' indicates the 3.3V/2.5V/1.8V variant within the ispMACH 4000B family. Confirm the 'TN100I' suffix corresponds to the 100-pin Thin Quad Flat Package (TQFP) with industrial temperature range (-40°C to +85°C). Ensure the source document explicitly lists this part number as active or obsolete to determine availability status.

Complex Programmable Logic Devices Selection Notes

Select this component when designing systems requiring moderate logic density with flexible I/O voltage levels. The 128-macrocell count is suitable for medium-complexity control applications. Compare against the LC4128Z series if lower voltage operation (1.8V core) is strictly required, noting that the B series supports higher voltage domains directly.

Complex Programmable Logic Devices Part Context

This device belongs to the Lattice ispMACH 4000B family, which succeeded earlier GAL-based solutions. It provides non-volatile configuration memory, allowing the device to retain its program without external storage. The family is characterized by fast path delays and support for multiple clocking schemes, including global and local clock networks.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-to-pin replacements may include other members of the ispMACH 4000B family with different package options, such as LC4128B-10T128I for QFP packages. Verify logical equivalence and timing constraints before substituting with newer families like ispMACH 4000V or Z, as architectural differences may exist.