Renesas R5F523E6MGNF#00

Overview

R5F523E6MGNF#00 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing, featuring a 24-bit delta-sigma ADC with 31.25 kSPS max sampling rate, ±5-V analog input range, 256 KB on-chip flash, 32 KB SRAM, and integrated excitation current sources (50–1000 µA) - deployed in load cell signal conditioning and weigh scale front-ends.

For engineers reviewing the R5F523E6MGNF#00 datasheet, R5F523E6MGNF#00 pinout, R5F523E6MGNF#00 application, or R5F523E6MGNF#00 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC performance at ±5 V full-scale, HWQFN-40 package constraints, CAN 2.0B interface compliance, and support for IEC 60730 safety diagnostics in embedded measurement systems.

Technical Context

The R5F523E6MGNF#00 implements a Harvard-architecture RXv2 CPU core operating at up to 32 MHz (64 DMIPS), with dedicated peripheral clocks: PCLKC up to 16 MHz for the DSAD module and PCLKD up to 32 MHz for the 12-bit S12AD converter. Its analog subsystem integrates a rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 2.5-V low-drift voltage reference (8 ppm/°C), and two independent excitation current sources with ±0.2% matching.

It supports event-driven operation via the Event Link Controller (ELC), enabling autonomous ADC conversion triggering, PWM generation, and timer synchronization without CPU intervention - critical for low-latency sensor acquisition during sleep modes like software standby with active LPT.

Key Specifications

Pinout & Package

Packaged in a 40-pin HWQFN (PWQN0040KD-A), the R5F523E6MGNF#00 features a 6 × 6 mm body with 0.5 mm pitch and exposed thermal pad. Pin functions are defined per Table 1.4 of R01DS0402EJ0100 Rev.1.00, supporting 13 general-purpose I/Os (5-V tolerant), 2 HVAIN pins for ±5-V analog inputs, 2 IEXC outputs, AVCC0/AVSS0 power rails, and dedicated DSAD reference and bias voltage terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision analog microcontroller applications.

Compared with R5F523E5MGNF#00, the R5F523E6MGNF#00 offers double flash/RAM for complex compensation models and larger safety libraries; versus ADUCM360BCPZ-RL7, it delivers native CAN 2.0B and ELC-driven deterministic timing - critical for closed-loop industrial control where CPU offload and bus reliability are non-negotiable.

Availability

R5F523E6MGNF#00 is available at Aetrix Electronics and suitable for industrial weigh scales, strain gauge transmitters, portable test equipment, and loop-powered temperature transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6MGNF#00 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, and power solutions for industrial, automotive, and IoT markets - with over 40 years of MCU innovation and ISO 9001/TS 16949 certified manufacturing.

The RX23E-B Group targets high-accuracy industrial sensing applications, integrating precision analog peripherals (24-bit DSAD, PGA, excitation sources) with robust MCU functionality and IEC 60730 safety features - designed specifically for weigh scales, process transmitters, and test instrumentation.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6MGNF#00?

The R5F523E6MGNF#00 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS at ±5-V input range. This rate is fixed for the M-suffix variant per Renesas' part numbering scheme (R01DS0402EJ0100 Rev.1.00, p.10), and applies to all 8 differential channels. Higher 125 kSPS operation requires L/N/K-suffix variants with different internal modulator clock configuration.

Does R5F523E6MGNF#00 include an integrated CAN controller?

Yes, the R5F523E6MGNF#00 includes a fully compliant CAN 2.0B module (RSCAN) supporting up to 1 Mbps transfer rate and 16 message boxes. It operates independently of the CPU via the Event Link Controller and requires only an external CAN transceiver (e.g., TJA1042) for physical layer interfacing - confirmed in Section 1.1 and Figure 1.2 of R01DS0402EJ0100.

What analog input voltage range does R5F523E6MGNF#00 support?

The R5F523E6MGNF#00 supports a ±5-V analog input range on its HVAIN0 and HVAIN1 pins, as specified for the "M" variant in Table 1.3 (p.8–9) and Figure 1.1 (p.10) of R01DS0402EJ0100. This is distinct from K/L variants (±10 V) and B/J variants (±5 V with LCD). No external level-shifting circuitry is needed for standard bridge sensor interfaces.

Is the 2.5-V voltage reference in R5F523E6MGNF#00 internally buffered and temperature-stable?

Yes, the R5F523E6MGNF#00 integrates a 2.5-V voltage reference with 8 ppm/°C temperature drift over –40°C to +85°C (R01DS0402EJ0100 p.5), capable of sourcing/sinking ±10 mA. It is internally buffered and may be used directly as DSAD_VREFH or routed to external circuitry - eliminating need for discrete reference ICs in most precision analog designs.

Can R5F523E6MGNF#00 perform self-diagnostics for IEC 60730 compliance?

Yes, the R5F523E6MGNF#00 includes hardware-assisted IEC 60730 Class B diagnostic features: ADC input disconnect detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT), and RAM test support via Data Operation Circuit (DOC). These are documented in Section 1.1 "Useful functions for IEC60730 compliance" (p.1) and verified in the device's safety manual.