## Overview of LCMXO2-2000HC-5BG256C The **LCMXO2-2000HC-5BG256C** belongs to the **MachXO2** family from Lattice Semiconductor. It is an ultra-low-power, instant-on, non-volatile PLD (Programmable Logic Device) designed to bridge the gap between low-density CPLDs and high-capacity FPGAs. --- ### 1. Technical Specifications The following table highlights the core technical parameters of this specific part: | Parameter | Specification | | :--- | :--- | | **Logic Cells (LUTs)** | 2,112 | | **Embedded Block RAM (EBR)** | 76 Kbits | | **User Flash Memory (UFM)** | 75 Kbits | | **Number of I/Os** | 206 | | **Voltage Supply (Core)** | 2.5V to 3.3V (HC series) | | **Speed Grade** | -5 (Standard speed) | | **Package Type** | CABGA-256 (14x14mm) | | **Operating Temperature** | 0°C to 85°C (Commercial) | --- ### 2. Key Internal Components #### A. Logic Array Block (LAB) The device is built around an array of Look-Up Tables (LUTs). Each LUT4 can be configured as logic, distributed RAM, or ROM. This allows for complex combinational and sequential logic implementation. #### B. Non-Volatile Configuration Unlike many 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 in milliseconds. - **Security:** It is harder to copy the design since the configuration stays inside the chip. #### C. Embedded Functional Subsets (EFB) This chip includes a "Hardened" IP block that provides common functions without consuming LUTs: - **I2C & SPI Interfaces:** Dedicated hardware for serial communication. - **Timer/Counter:** 16-bit hardware timers. - **User Flash Memory (UFM):** Used for storing non-volatile data like ID codes or calibration constants. #### D. Power Management The "HC" designation indicates it is a High-Performance/Standard voltage part. It includes a "Power-miser" mode to reduce static power consumption during idle states. --- ### 3. Part Number Decoder Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **LCMXO2** | MachXO2 Family | | **2000** | Density (Approx. 2000 Logic Cells) | | **HC** | High Performance / 2.5V-3.3V Supply | | **5** | Speed Grade (5 is standard/mid-range) | | **BG256** | 256-ball BGA Package | | **C** | Commercial Temperature Range | --- ### 4. Common Applications Due to its high I/O count and low power, this part is frequently used for: 1. **System Control:** Power sequencing and reset generation. 2. **Interface Bridging:** Converting signals between different protocols (e.g., I2C to Parallel). 3. **I/O Expansion:** Adding more GPIOs to a microcontroller. 4. **Sensor Hubs:** Aggregating data from multiple low-speed sensors.