LC4032V-25T44C

Overview

The LC4032V-25T44C is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000V family. It features 32 macrocells and 36 logic blocks within a 44-pin TQFP package. The device supports In-System Programming via JTAG using non-volatile EEPROM technology. Key electrical parameters include a maximum operating frequency of 400 MHz, a propagation delay of 7.5 ns, and an independent output enable control. It operates on a single 3.3V supply voltage with 5V-tolerant I/Os, supporting LVCMOS 3.3, LVTTL, and PCI interfaces.

Feature Summary

• ispMACH 4000V architecture with SuperFAST performance up to 400 MHz
• EEPROM-based non-volatile configuration for instant-on operation
• JTAG In-System Programmability (ISP)
• 5V tolerant I/Os compatible with LVCMOS 3.3, LVTTL, and PCI standards

Applications

• High-density logic replacement in industrial control systems
• Interface bridging between 3.3V and 5V logic domains
• State machine implementation in communication equipment
• Address decoding and bus buffering in embedded systems

Procurement Notes

Verify the specific suffix 'V' indicates the 3.3V core voltage variant when sourcing. Confirm the '25' speed grade corresponds to the 7.5 ns propagation delay requirement. Ensure the 'T44C' designation matches the required 0°C to 90°C commercial temperature range and TQFP package dimensions. Cross-reference the manufacturer's latest datasheet DS1020 for any pinout or electrical specification updates.

Selection Notes

Select this model if the design requires 32 macrocells with a 7.5 ns delay at 3.3V. Compare against the LC4032B-25T44C (2.5V core) or LC4032Z-25T44C (1.8V core) if lower power consumption is prioritized over the 3.3V native operation. Verify that the 30 user I/Os meet the interface count requirements without needing additional external buffers.

Part Context

This component belongs to the ispMACH 4000V/B/C/Z family, which blends ispLSI 2000 and ispMACH 4A architectures. The 'V' series specifically targets 3.3V applications, offering a balance of high performance and low power dissipation compared to older 5V CPLDs. It serves as a direct upgrade path for legacy GAL or PAL devices requiring higher density and reprogrammability.

Replacement Considerations

Direct functional substitutes within the same package include other speed grades of the LC4032V series (e.g., LC4032V-75TN44C). For voltage migration, the LC4032B-25T44C (2.5V) or LC4032Z-25T44C (1.8V) are electrically compatible but require different supply voltages.