ZON M1L/M1 Single-Phase Electricity Meter SoC

The ZON™ M1L (MAX71313L) and M1 (MAX71314L) electricity meter systems-on-chip (SoC) integrate dual 32-bit processors for demanding single-phase metering applications with 128KB or 64KB flash, 8KB RAM, and a single-cycle 32 x 32 + 64 multiplier. A low-power metering mode allows metering in the presence of neutral disconnect tampering. The low-power, dedicated compute engine (CE) handles high-rate metrology processing and a 32-bit MAXQ30 MPU core handles other application functions including communications and display control.

* Single ADC Offers High-Accuracy Performance and Cost-Effective Solution

* Supports Up to 5 Multiplexed Inputs

* 0.1% (typ) Wh Accuracy over 2000:1 Current Range

* Dual-Core Architecture Improves System Performance

* Dedicated 32-bit DSP Core for High-Rate Metrology Processing

* MAXQ30 32-Bit RISC MPU, 10 MIPS (at 10MHz)

* Highly Integrated Product Features and Flexible Peripherals Support Broad Application Needs

* 128KB (M1) or 64KB (M1L) Flash, 8KB SRAM

* Supports Current Transformers or Shunts for Current Measurement

* RTC with Hardware Temperature Compensation

* Digital Temperature Compensation for Metrology

* 45Hz to 65Hz Line Frequency Range

* Phase Compensation (10)

* Four Pulse Outputs

* LCD Controller Supports Up to 39 Segment Drivers and Up to Six Common Planes

* Two PWM Channels with Programmable Frequency, Duty Cycle, Ramp Time

* Five General-Purpose Timers

* Touch Switch Input

* SPI (Master and Slave)

* I2C (Master and Slave)

* 3x UARTs (One with Optical Encoder)

* Small 64-Pin LQFP Package Saves Board Space

* Low-Power Operation Extends Battery Life

* Enables Metering Mode Operation During Neutral Disconnect Tampering

* 5.6mA Consumption at 3.3V in Typical Metering Mode

* 1.6mA Typical Current Consumption at 3.3V in Low-Power Metering Mode

* 1.75µA Typical Sleep Mode Current