Renesas R5F10NMLDFB#30

Overview

R5F10NMLDFB#30 from Renesas is an 80-pin RL78/I1C ultra-low-power 16-bit MCU with 512 KB code flash (256 KB × 2 banks), 32 KB RAM, 2 KB data flash, integrated 24-bit ΔΣ A/D converter (3 channels), independent-power RTC, hardware AES engine, and 32-bit multiply-accumulator - designed for utility metering applications including electric, gas, and water meters.

For engineers reviewing the R5F10NMLDFB#30 datasheet, R5F10NMLDFB#30 pinout, R5F10NMLDFB#30 application, or R5F10NMLDFB#30 equivalent, key selection considerations include its 1.6–5.5 V operation range, STOP/HALT/SNOOZE low-power modes, dual-bank flash for live firmware updates, and ΔΣ ADC support for high-precision sensor interfacing in battery-backed metering systems.

Technical Context

The R5F10NMLDFB#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz PLL) to 66.6 µs (15 kHz low-speed oscillator). It integrates a dedicated 24-bit ΔΣ A/D converter with PGA gains up to ×32 and SNDR ≥65 dB at ×32 gain, alongside a separate 12-bit SAR ADC with 4 channels and simultaneous sample-and-hold for three inputs.

Its power management includes on-chip POR, RTCPOR, and multi-level LVD with interrupt/reset options across VDD, LVDVBAT, VRTC, and EXLVD pins. The event link controller (ELC) supports 30 event signal types linked to peripherals, enabling deterministic low-latency response without CPU intervention - critical for real-time metering fault detection and pulse counting.

Key Specifications

Pinout & Package

80-pin plastic LFQFP (12 × 12 mm, 0.5-mm pitch), RoHS-compliant, industrial-grade package with exposed pad not specified. Pin functions validated per Renesas R01DS0382EJ0112 Rev.1.12 datasheet Figure 1-1 and Section 1.3.1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F10NPLDFB#30, the R5F10NMLDFB#30 saves PCB area and cost while retaining full metrology capability for 3-phase or single-phase meters with ≤3 current sensors; versus R5F10PGDFA#30, it delivers essential metering-specific IP - no alternative provides equivalent ΔΣ+AES+RTC integration in 80-pin form factor.

Availability

R5F10NMLDFB#30 is available at Aetrix Electronics and suitable for smart electricity metering, gas volume recording, and water flow monitoring applications requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.

Supply support for R5F10NMLDFB#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/I1C product line is engineered specifically for utility metering, integrating metrology-grade analog front-ends, secure cryptographic acceleration, and ultra-low-power operation to meet ANSI C12, IEC 62056, and OMS Group standards.

FAQ

What is the maximum operating frequency of the R5F10NMLDFB#30?

The R5F10NMLDFB#30 supports a maximum CPU clock of 32 MHz via its PLL, or 32 MHz directly from the high-speed on-chip oscillator. At 32 MHz, minimum instruction execution time is 0.03125 µs. The PLL remains active during ΔΣ ADC operation, ensuring synchronized high-precision sampling without CPU clock dependency.

Does the R5F10NMLDFB#30 support true hardware AES encryption?

Yes, the R5F10NMLDFB#30 includes a dedicated hardware AES circuit supporting GCM, ECB, and CBC cipher modes with 128-, 192-, and 256-bit key lengths. This offloads encryption/decryption from the CPU, reduces power consumption during secure communication, and meets regulatory requirements for firmware signing and data confidentiality in utility metering.

How many ΔΣ ADC channels does the R5F10NMLDFB#30 provide, and what is their effective resolution?

The R5F10NMLDFB#30 provides three 24-bit ΔΣ ADC channels. Its effective resolution is confirmed by SNDR ≥65 dB at ×32 PGA gain, corresponding to ~10.8 ENOB. This enables high-accuracy current/voltage measurement in Class 0.5 and Class 1 electricity meters per IEC 62053-21.

Can the R5F10NMLDFB#30 perform firmware updates without interrupting system operation?

Yes, the R5F10NMLDFB#30 supports bank programming: its 512 KB code flash is split into two 256 KB banks, allowing execution from one bank while reprogramming the other. This enables live firmware updates in deployed meters without halting metrology functions or losing RTC timekeeping.

What package and temperature grade is the R5F10NMLDFB#30 qualified for?

The R5F10NMLDFB#30 is packaged in an 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) and qualified for industrial temperature operation from −40°C to +85°C. It carries the "D" suffix denoting industrial application grade and is supplied in tray packaging (#30 variant).