LC4032V-25TN44C

Overview

The LC4032V-25TN44C is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4000V family. It features 32 macrocells and 36 logic blocks, housed in a 44-pin TQFP package with 30 user I/Os. The device supports In-System Programming via JTAG and utilizes EEPROM technology for non-volatile configuration. It operates within a commercial temperature range of 0°C to +90°C junction temperature. Key electrical parameters include a maximum operating frequency (fMAX) of 400 MHz and a maximum propagation delay (tpd) of 2.5 ns. The core voltage is 1.8 V, while I/Os are 5 V tolerant.

Feature Summary

• SuperFAST™ performance with fMAX up to 400 MHz and tpd of 2.5 ns
• In-System Programmability (ISP) via JTAG interface
• EEPROM-based non-volatile memory architecture
• 5 V tolerant I/O supporting LVCMOS 3.3, LVTTL, and PCI interfaces

Applications

• General-purpose digital logic replacement
• Bus bridging and protocol conversion
• Address decoding and control logic
• Interface adaptation between different voltage domains

Procurement Notes

Verify the specific suffix 'TN44C' corresponds to the 44-pin TQFP package, 7.5 ns or 2.5 ns speed grade (note: datasheet indicates -25 implies 2.5ns), and Commercial temperature grade (0-90°C). Confirm RoHS compliance status as manufacturing processes may vary by production date. Check for lead-free vs. leaded options if legacy compatibility is required.

Selection Notes

Select this component when 32 macrocells are sufficient for the design complexity. The -25 speed grade offers 2.5 ns delay, suitable for high-speed synchronous designs up to 400 MHz. Ensure the system requires 5 V tolerant inputs if interfacing with legacy 5 V logic. Compare against LC4032B or LC4032Z if different voltage cores (2.5 V or 1.8 V only) or industrial temperature ranges are needed.

Part Context

This part belongs to the ispMACH 4000V family, which blends ispLSI 2000 and ispMACH 4A architectures. It is designed for low power consumption with a 1.8 V core voltage. The family offers Global Routing Pool and Output Routing Pool for improved timing predictability and first-time-fit rates compared to older CPLD generations.

Replacement Considerations

Direct pin-compatible replacements within the same density include LC4032B-25TN44C (2.5V core) or LC4032Z-25TN44C (1.8V core, no 5V I/O). For higher density, LC4064V-25TN44C provides 64 macrocells in the same package.