typical-typical (tt) corner

**Typical-Typical (TT) corner** represents **nominal operating conditions** — median process, nominal voltage, and room temperature, serving as the baseline for initial design and the expected performance for most manufactured chips. **What Is TT Corner?** - **Definition**: Typical process + nominal voltage + room temperature. - **Characteristics**: Median transistor performance, expected behavior. - **Purpose**: Baseline verification, initial design target, typical performance. **TT Corner Parameters** **Process**: Typical transistors (nominal Vth, mobility). **Voltage**: Nominal supply (e.g., 1.0V). **Temperature**: Room temperature (e.g., 25°C). **Result**: Expected typical performance. **Why TT Corner Matters?** - **Baseline**: Starting point for all design and verification. - **Typical Performance**: What most chips will achieve. - **Power Estimation**: Realistic power consumption estimate. - **Functional Verification**: Initial functionality testing. - **Comparison**: Reference for measuring corner margins. **What Gets Verified** **Functionality**: Basic functional correctness. **Performance**: Target frequency and timing. **Power**: Typical power consumption. **Behavioral Models**: Validate against expected behavior. **Initial Timing**: First-pass timing analysis. **Applications**: Initial design, functional verification, power estimation, performance targets, customer specifications. **Typical Behavior**: Most manufactured chips (60-70%) perform near TT corner. TT corner is **the everyday baseline** — representing what most chips will do under normal conditions, the foundation for all corner analysis.