LAMXO640C-3FTN256E

Overview

The LAMXO640C-3FTN256E is an automotive-grade Field Programmable Gate Array (FPGA) from the LA-MachXO family, manufactured by Lattice Semiconductor. It features 640 Look-Up Tables (LUTs), equivalent to 320 Adaptive Logic Modules (ALMs), and provides up to 159 I/O pins. The device operates with a core voltage of 1.2V and supports I/O voltages of 1.8V, 2.5V, or 3.3V. It includes 6 Kbits of distributed RAM and utilizes non-volatile Flash memory for instant-on configuration. Qualified under AEC-Q100 standards, it functions within a temperature range of -40°C to +125°C in a 256-ball ftBGA package.

Feature Summary

• AEC-Q100 qualified for automotive applications with operation up to 125°C
• Non-volatile architecture providing instant-on capability without external configuration memory
• TransFR™ technology enabling in-field logic updates while the system operates
• Supports LVCMOS, LVTTL, PCI, LVDS, Bus-LVDS, LVPECL, and RSDS interface standards

Applications

• Glue logic implementation
• Bus bridging and interfacing
• Power-up control systems
• General control logic

Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design tools support the LA-MachXO family specifications.

Selection Notes

Select this component for designs requiring low-density programmable logic with non-volatile storage. The C-series variant supports 1.8V, 2.5V, and 3.3V I/O levels, differing from the E-series which uses a 1.2V core. Verify that the 256-pin ftBGA package meets board space constraints.

Part Context

This part belongs to the LA-MachXO Automotive Family, designed to bridge the gap between CPLDs and low-capacity FPGAs. It combines FPGA flexibility with CPLD-like instant-on security. The MachXO series is characterized by its single-chip solution featuring background programmable internal Flash memory.

Replacement Considerations

Direct substitutes within the same package and pinout include other variants of the LAMXO640C series, such as LAMXO640C-3TN144E if a smaller package is acceptable. Cross-family migration to MachXO3 or MachXO5 requires significant redesign due to architectural differences.