The ZON™ P3L/P3 (MAX71334L/MAX71335L) metering SoC (systems on chip) integrates dual 32-bit processors for polyphase metering applications. It contains 256KB flash (ZON P3) or 128KB flash (ZON P3L), 12KB RAM and a single-cycle 32 x 32 + 64 multiplier. The application processor (CPU) is a 32-bit MAXQ®30 core. The metrology processor is a proprietary compute engine (CE), a 32-bit RISC processor dedicated to computing the metering parameters from voltage and current samples. Applications * Polyphase electricity meters * Polyphase energy monitoring * Smart Meters * Dual-Core Architecture for Improved System Performance and Flexibility * Dedicated 32-Bit DSP Compute Engine for Metrology Processing * MAXQ30 32-Bit RISC MPU Core, Up to 10 MIPS (at 10MHz), with 256kB Flash or 128kB Flash, and 12kB data RAM * Advanced AFE with High Accuracy and Temperature Stability * Four Independent ADCs Measuring Four Current Channels and Three Voltage Channels * 0.1% Wh Accuracy over 2000:1 Current Range * Digital Temperature Compensation for Metrology and RTC * 40Hz–70Hz Line Frequency Range, Phase Compensation (±10°) * Low-Power 5ksps Auxiliary ADC for Environmental Monitoring * On-Chip Digital Temperature Sensor * Highly Integrated Product Features and Flexible Peripherals Support Broad Application Needs * LCD Controller Supporting Up to Eight Common Planes * Two PWM Control Channels with Programmable Frequency, Duty Cycle, Ramp Time * Two Touch Switch Inputs * Oscillator Based on 32kHz Watch Crystal with Internal 24MHz Backup R/C Oscillator * SPI (Master and Slave), Master I2C * Four UARTs (Configurable Pins), Smart Card Interface, 38kHz IR Decoder * 100-Pin LQFP