MAX71315C/MAX71314C/
MAX71335C/MAX71334C
ZON M3S/M3SL and P3S/P3SL Single-
Phase/Polyphase Electricity Meter SoC
General Description
The ZON™ M3S/M3SL and P3S/P3SL (MAX71315C/
MAX71314C and MAX71335C/MAX71334C) integrate
dual 32-bit processors and security engines for demanding
single phase (MAX71315C/MAX71314C) and poly-phase
(MAX71335C/MAX71334C) metering applications with up
to 256KB flash, 21KB RAM, and a single-cycle 32x32 +
64 multiplier. The application processor (MPU) is a 32-bit
MAXQ®30 core. The metrology processor (or Compute En-
gine, CE) is a 32-bit fixed-point processor dedicated to com-
puting the metering parameters from voltage and current
samples. The integrated security engines (AES-128/
192/256, AES-GCM-128, DES, TRNG) provide fast data
encryption and decryption for secure smart grid com-
munications. Integrated 38kHz encoding and decoding
functions saves BOM cost and reduces board space. Two
touch switch pins enable capacitive touch detection.
The device family also integrates all the essential metering
function blocks: LCD controller supporting up to 8 common
planes with a maximum of 288 segments, real-time-clock
(RTC) with automatic temperature compensation, and mul-
tiple serial communication ports (UART, I2C, and SPI).
Applications
● Single- or Poly-Phase AMI Metering
● Energy Monitoring
Benefits and Features
● Advanced Metrology Provides the Best-In-Class Per-
formance
• Up to Seven Metrology Channels for Polyphase
Metering and Up to Four Channels for Single-/ Two-
Phase Metering
• 0.1% Typical Accuracy Over 5000:1 Current Range
with Integrated Metrology ADCs
• Integrated ADCs Support Current Transformers,
Rogowski Coils, and Shunts
• Three Remote ADC Interfaces for Current Sensing
with Remote Shunts
Ordering Information appears at end of data sheet.
MAXQ is a registered trademark of Maxim Integrated
Products, Inc.
Rev 8; 12/2019
Benefits and Features (Continued)
● Dedicated RTC Circuit Ensures Accurate Timekeeping
● Integrated Security Engines for Secure Smart Metering
• AES-128/192/256, and AES-GCM-128
• True Random Number Generator
• 3DES
• On-Chip CE-OnGuard Protects Metering Operations
from Unauthorized Access, and Ensuring Authenticity
of Peripheral Operations
• Supports Welmec/MID
● Rich Peripherals Support Reduces Board Space and
Lowers BOM Cost
• Low-Power ADC for Environmental Monitoring
• LCD Controller Supporting Up to Eight Common
Planes: 8x36 / 6x38 / 4x40
• Up to 52 (ZON P3S/P3SL) or 54 (ZON M3S/M3SL)
GPIO pins
• SPI (Master and Slave), Master I2C, 4x UARTs, Two
Smart Card Ports, Two Touch Switch Inputs
• 38kHz IR Encoder/Decoder
• Single-Cycle 32x32 + 64 Multiply-Accumulate Unit for
Demanding Signal Processing
● Dual 32-Bit Programmable Cores Provide High Proces-
sing Power and Flexibility
• Metering Core (Compute Engine) with up to 20MIPS
at 20MHz, and up to 8KB RAM for Data and Code
• Application Core with up to 20MIPS at 20MHz,
256KB/128KB Flash Code Space, 12KB Data RAM
plus 1KB NVRAM
● Configurable Operation Modes Save Power
• 1.6μA SLP Mode (VBAT_RTC)
• 14.6μA LCD Mode (VBAT_RTC and VBAT)
• 1KB NVRAM in SLP Mode, Optional 8KB NVRAM
Backup in LCD Mode (with VBAT active)
● LQFP-100 Package
