MAX71335L

ZON P3/P3L Polyphase Electricity Meter SoC

Best-in-Class Metrology Performance and Custom Peripherals

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Overview

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

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