The **LCMXO2-256HC-5TG100I** is a member of the **MachXO2** family developed by **Lattice Semiconductor**. It is a low-power, instant-on FPGA (Field Programmable Gate Array) designed for system control, interface bridging, and power management applications. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of this specific part: | Parameter | Specification | | :--- | :--- | | **Logic Cells (LUTs)** | 256 | | **User I/O Count** | 78 Pins | | **Package Type** | TQFP-100 (Thin Quad Flat Pack) | | **Voltage Supply (Internal)** | 2.375V to 3.465V | | **Operating Temperature** | -40°C to 100°C (Industrial Grade) | | **Speed Grade** | -5 (High speed) | | **Non-Volatile Memory** | Flash-based (Instant-on configuration) | --- ### 2. Functional Architecture The MachXO2 architecture is unique because it bridges the gap between a CPLD (Complex Programmable Logic Device) and an FPGA. * **Embedded Flash:** Unlike high-end FPGAs that require an external PROM to load code upon power-up, this chip stores its configuration internally. It boots in microseconds. * **Hardened IP Blocks:** It includes dedicated hardware blocks for **I2C, SPI, and Timer/Counters**, which saves logic cells for other custom tasks. * **Low Power Consumption:** Designed for static power consumption as low as microwatts, making it suitable for battery-operated devices. --- ### 3. Part Number Breakdown Understanding the suffix codes helps identify the exact variant: | Code Segment | Meaning | | :--- | :--- | | **LCMXO2** | MachXO2 Product Family | | **256** | Density (256 Look-Up Tables/Logic Cells) | | **HC** | High Performance / High Voltage (2.5V/3.3V VCC) | | **5** | Speed Grade (Scale of 4 to 6, where 6 is fastest) | | **TG100** | TQFP Package, 100-pin count | | **I** | Industrial Temperature Grade | --- ### 4. Common Applications Due to its small logic density and high I/O count, this part is frequently used for: 1. **Level Shifting:** Translating signals between different voltage domains (e.g., 1.8V to 3.3V). 2. **Power Sequencing:** Managing the order in which power rails turn on in a complex PCB. 3. **Bus Expansion:** Adding extra GPIOs, UARTs, or I2C ports to a microcontroller. 4. **Glue Logic:** Replacing multiple small 74-series logic chips to save board space.