The **LCMXO2-256HC-4UMG64C** is a member of the MachXO2 family developed by Lattice Semiconductor. It is a bridge between traditional CPLDs (Complex Programmable Logic Devices) and low-power FPGAs (Field Programmable Gate Arrays). --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Logic Cells (LUTs)** | 256 Look-Up Tables | | **User I/Os** | 44 Pins | | **Package Type** | ucBGA-64 (64-ball Ultra Chip Scale Ball Grid Array) | | **Voltage Supply (Core)** | 2.5V to 3.3V | | **Flash Memory** | User Flash Memory (UFM) available | | **Operating Temperature** | 0°C to 85°C (Commercial Grade) | | **Speed Grade** | -4 (Standard speed) | --- ### 2. Core Electronic Features #### A. Architecture: Instant-On Unlike many FPGAs that require an external SPI Flash to load their configuration upon power-up, the MachXO2 series features **on-chip non-volatile Flash memory**. This allows the device to be "instant-on," meaning it begins functioning within microseconds of receiving power. #### B. Low Power Consumption The "HC" in the part number denotes a high-performance, low-power CMOS technology. It is designed for battery-powered or heat-sensitive applications, featuring static power consumption in the milliwatt range. #### C. Hardened Embedded Functions To save logic cells for user applications, the chip includes "hardened" (built-in hardware) blocks for common functions: * **I2C & SPI Interfaces:** Dedicated hardware for serial communication. * **Timer/Counters:** Built-in 16-bit timers. * **Oscillator:** Internal RC oscillator, removing the need for an external crystal in simple designs. --- ### 3. Part Number Breakdown Understanding the nomenclature helps identify specific variant characteristics: | Code | Meaning | | :--- | :--- | | **LCMXO2** | MachXO2 Family | | **256** | Logic Density (256 Look-Up Tables) | | **HC** | High Performance / Low Power (2.375V to 3.465V) | | **4** | Speed Grade (-4 is standard) | | **UMG64** | Package Type: ucBGA, 0.4mm pitch, 64-ball | | **C** | Temperature Grade: Commercial (0°C to +85°C) | --- ### 4. Typical Applications * **System Control:** Power sequencing and reset generation. * **I/O Expansion:** Adding extra GPIOs to a microcontroller via I2C or SPI. * **Interface Bridging:** Converting signals between different logic levels or protocols (e.g., LVCMOS to LVDS). * **Glue Logic:** Replacing multiple small 74-series logic chips to save PCB space.