Renesas R5F523E5KGFM#30

Overview

R5F523E5KGFM#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing applications. It integrates a 24-bit delta-sigma A/D converter with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 128 KB flash/16 KB SRAM - all operating at up to 32 MHz. Designed for load cell, pressure sensor, and weigh scale front ends.

For engineers reviewing the R5F523E5KGFM#30 datasheet, R5F523E5KGFM#30 pinout, R5F523E5KGFM#30 application, or R5F523E5KGFM#30 equivalent, this MCU delivers calibrated 24-bit measurement accuracy at up to 125 kSPS, integrated ±10-V HVAIN inputs, low-drift voltage reference (2.5 V, 8 ppm/°C), and IEC60730-compliant self-test functions for safety-critical analog acquisition.

Technical Context

The R5F523E5KGFM#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination. Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), with fourth- to fifth-order sinc digital filtering and simultaneous 50/60 Hz rejection at 10/54 SPS.

It supports dual A/D systems: the 24-bit delta-sigma converter (8 differential channels, ±10-V HVAIN pins) and an independent 12-bit S12AD (8 channels, 1.4 µs conversion). The analog front end includes two excitation current sources (±0.2% matching), bias voltage generator, and voltage detectors for AVCC0, DSAD references, and HVCOM disconnect monitoring.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch, exposed pad (thermal pad not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5KGFM#30, R5F523E5JGFN trades HVAIN capability for LCD integration and larger pin count, while R5F523E6KGFM retains identical analog performance but doubles flash/RAM - making it ideal for applications needing deeper firmware functionality without changing analog signal chain design.

Availability

R5F523E5KGFM#30 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, temperature monitoring systems, and strain gauge data loggers requiring stable component supply across extended product lifecycles.

Supply support for R5F523E5KGFM#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, and power solutions for industrial, automotive, and IoT applications.

The RX23E-B Group is designed specifically for high-accuracy sensor signal conditioning - integrating precision delta-sigma ADCs, programmable gain amplifiers, excitation sources, and safety features into a single chip for industrial process control and measurement equipment.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5KGFM#30?

The R5F523E5KGFM#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma A/D converter (DSADB) when configured with fMOD = 4 MHz and appropriate digital filter settings. At lower data rates (e.g., 10 or 54 SPS), it achieves simultaneous 50/60 Hz rejection - critical for industrial AC-noise environments. This rate is sustained across all eight differential input channels without multiplexing penalty.

Does R5F523E5KGFM#30 support ±10-V analog inputs directly?

Yes, R5F523E5KGFM#30 includes four dedicated HVAIN pins (HVAIN0–HVAIN3) rated for ±10-V differential input voltage range. These pins connect directly to strain gauge bridges or other high-voltage sensors without external level-shifting or attenuation circuits. The analog front end also provides HVCOM monitoring with disconnect detection to ensure signal integrity validation.

What safety certifications or self-test features does R5F523E5KGFM#30 include for IEC60730 compliance?

R5F523E5KGFM#30 includes hardware-assisted self-test features aligned with IEC60730 Class B requirements: A/D converter diagnostic (offset/gain error calibration), clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) supervision, RAM test assistance via data operation circuit (DOC), and analog input disconnect detection for DSAD, excitation sources, and HVCOM. These are implemented in silicon - no software-only checks required.

What is the operating temperature range and supply voltage specification for R5F523E5KGFM#30?

R5F523E5KGFM#30 is a G-version device rated for –40°C to +105°C ambient operation. It operates from a single 1.8–5.5 V VCC supply, with separate AVCC0/AVSS0 pins requiring 4.5–5.5 V for full ±10-V analog input performance. Core logic and analog sections are independently powered to minimize noise coupling and ensure stable high-precision measurement across the full temperature range.

How many excitation current sources does R5F523E5KGFM#30 provide, and what are their key specifications?

R5F523E5KGFM#30 provides two fully programmable excitation current sources (IEXC0 and IEXC1) supporting 50 µA, 100 µA, 250 µA, 500 µA, 750 µA, or 1000 µA output levels. They feature ±0.2% current matching and 5 ppm/°C drift matching - essential for ratiometric bridge measurements where excitation stability directly determines system accuracy. Each source includes disconnect detection for open-load fault reporting.