The **LCMXO2-2000HC-4FTG256C** is a non-volatile Field Programmable Gate Array (FPGA) belonging to the **MachXO2** family developed by Lattice Semiconductor. It is designed to bridge the gap between low-density CPLDs (Complex Programmable Logic Devices) and high-performance FPGAs. ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Logic Cells (LUTs)** | 2112 Look-Up Tables | | **User I/O Count** | 206 I/O Pins | | **Embedded RAM (EBR)** | 72 Kbits | | **Distributed RAM** | 16 Kbits | | **Flash Memory** | User Flash Memory (UFM) available | | **Voltage Supply (Core)** | 2.375V to 3.465V (HC Series) | | **Package Type** | FTBGA-256 (17x17 mm) | | **Speed Grade** | -4 (Standard performance) | | **Operating Temperature** | 0°C to 85°C (Commercial Grade) | --- ### 2. Core Functional Blocks #### A. Programmable Logic Cells The device uses 4-input LUTs to implement logic functions. These cells are flexible enough to handle Glue logic, state machines, and basic arithmetic operations. #### B. Non-Volatile "Instant-on" Technology Unlike traditional FPGAs that require an external SPI Flash to load the configuration at power-up, the MachXO2 stores its configuration in on-chip Flash memory. This results in: * **Instant-on functionality:** The chip is active within milliseconds. * **Security:** Bitstream sniffing is much harder since the configuration is internal. #### C. Embedded Function Blocks (EFB) The "HC" variants include hardened IP blocks for common communication protocols, saving logic cells for other tasks: * **I2C & SPI:** Hardened controllers for peripheral communication. * **Timer/Counters:** Dedicated 16-bit timer blocks. --- ### 3. Part Number Decoder Understanding the nomenclature helps in selecting the right variant: | Segment | Meaning | | :--- | :--- | | **LCMXO2** | MachXO2 Product Family | | **2000** | Density (approx. 2112 LUTs) | | **HC** | High Performance / High Voltage (2.5V/3.3V) | | **4** | Speed Grade (-4 is standard) | | **FTG256** | 256-ball Fine Pitch Thin BGA (0.8mm pitch) | | **C** | Commercial Temperature Range | --- ### 4. Common Use Cases * **System Control:** Power sequencing, reset generation, and interface bridging. * **I/O Expansion:** Adding extra GPIOs to a microcontroller via I2C or SPI. * **Bus Conversion:** Interfacing between different signal standards (e.g., LVCMOS to LVDS). * **Display Driving:** Driving small character or graphic LCDs.