The **LCMXO2-256UHC-4FG484I** (often part of a Tape & Reel series indicated by TRR) is a member of the **MachXO2** family from Lattice Semiconductor. This specific device is an Ultra-Low Power, instant-on, non-volatile PLD (Programmable Logic Device). --- ## 1. Technical Specification Table | Parameter | Specification | | :--- | :--- | | **Logic Cells (LUTs)** | 256 | | **User I/O Count** | 334 | | **Package / Case** | 484-BBGA (19x19 mm) | | **Supply Voltage (Core)** | 2.375V to 3.465V | | **Speed Grade** | -4 (Standard speed) | | **Operating Temp** | -40°C to 100°C (Industrial Grade) | | **Memory (Embedded)** | Flash-based configuration | --- ## 2. Key Architectural Features ### A. Non-Volatile Configuration Unlike standard FPGAs that require an external SPI Flash to load code upon power-up, the MachXO2 features **on-chip Flash**. - **Instant-on:** The device is operational within milliseconds. - **Security:** Since the configuration remains on-chip, it is harder to intercept the bitstream. ### B. Hardware "Hardened" IP To save logic cells for user applications, Lattice integrates specific functions directly into the silicon: - **I2C & SPI Interfaces:** Dedicated hard cores for serial communication. - **Timer/Counter:** Built-in 16-bit timers. - **Oscillator:** An internal oscillator is provided, removing the need for an external crystal in simple timing applications. ### C. Low Power Consumption The "UHC" designation indicates **Ultra High Capacity/Performance** within the low-power bracket. It utilizes a 65nm process technology to keep static power consumption in the microwatt range, making it ideal for battery-operated handheld devices. --- ## 3. Typical Use Cases * **System Control:** Managing power-up sequences for larger CPUs or ASICs. * **I/O Expansion:** Bridging between different voltage domains or adding extra GPIOs to a microcontroller. * **Interface Bridging:** Converting signals between formats like LVDS, I2C, and SPI. * **Glue Logic:** Replacing multiple discrete 74-series logic chips to save PCB space. --- ## 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **LCMXO2** | MachXO2 Product Family | | **256** | 256 Look-Up Tables (Logic Density) | | **UHC** | Ultra High Performance / 2.5V-3.3V Vcc | | **4** | Speed Grade (4 is standard) | | **FG484** | Fine-pitch Ball Grid Array, 484 pins | | **I** | Industrial Temperature Range | | **TRR** | Tape and Reel Packaging | ---