Renesas R5F523E5MGFM#30

Overview

R5F523E5MGFM#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 a low-drift 2.5-V voltage reference (8 ppm/°C). Operating at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, it targets load cell, pressure transducer, and RTD signal conditioning systems.

For engineers reviewing the R5F523E5MGFM#30 datasheet, R5F523E5MGFM#30 pinout, R5F523E5MGFM#30 application, or R5F523E5MGFM#30 equivalent, key selection criteria include its 31.25 kSPS delta-sigma sampling rate, 10-V analog input range, integrated PGA and excitation sources, CAN interface compliance with ISO11898-1, and support for IEC60730 functional safety diagnostics.

Technical Context

The R5F523E5MGFM#30 implements the RXv2 CPU core with 32-bit CISC Harvard architecture, 5-stage pipeline, and IEEE 754-compliant single-precision FPU-enabling real-time floating-point sensor signal processing. Its analog subsystem centers on the DSADB unit, synchronized to PCLKC (≤16 MHz), with configurable sinc filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Power management includes three low-power modes (sleep, deep sleep, software standby), a low-power timer (LPT) running off the 32.768-kHz sub-clock, and voltage detection circuits (LVDAb) with 14-level programmable thresholds. The ELC enables interrupt-free inter-module triggering-critical for deterministic timing in closed-loop control and synchronized ADC-DAC operation.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin Low-Profile Quad Flat Package, 10 mm × 10 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5KDFM#30 and R5F523E5NDFM#30, the R5F523E5MGFM#30 uniquely balances 31.25 kSPS sampling, ±10-V input support, and full IEC60730 diagnostic coverage in the 64-pin LFQFP footprint-making it optimal for cost-constrained, safety-aware industrial weigh modules.

Availability

R5F523E5MGFM#30 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitter front-ends, RTD-based temperature controllers, and smart sensor nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F523E5MGFM#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 markets-with over 40 years of MCU innovation and broad functional safety certification expertise.

The RX23E-B Group, including the R5F523E5MGFM#30, was designed specifically for high-accuracy analog measurement in industrial sensing-integrating precision delta-sigma ADCs, PGAs, excitation sources, and safety features into a single chip to replace discrete analog signal chains.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in the R5F523E5MGFM#30?

The R5F523E5MGFM#30 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS. This rate is achieved with a modulator clock of 4 MHz and applies to configurations using the fourth-order sinc filter. Lower rates (e.g., 10 SPS or 54 SPS) enable simultaneous 50 Hz/60 Hz rejection, and the device maintains 24-bit effective resolution at 3.8 SPS with gain = 1.

Does the R5F523E5MGFM#30 support ±10-V analog inputs, and which pins are used?

Yes, the R5F523E5MGFM#30 supports ±10-V analog inputs via four dedicated HVAIN pins (HVAIN0–HVAIN3) in the PLQP0064KB-C package. These pins are internally protected and support differential, pseudo-differential, or single-ended configurations. Input disconnect detection assist is hardware-enabled for these pins to improve system reliability in harsh industrial environments.

What are the key IEC60730 safety features implemented in the R5F523E5MGFM#30?

The R5F523E5MGFM#30 includes hardware-assisted IEC60730 compliance features: self-diagnostic routines for the delta-sigma ADC (offset/gain calibration), clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance using the data operation circuit (DOC), and analog input disconnect detection for HVAIN and excitation current sources-all accessible via dedicated peripheral registers without software overhead.

Can the R5F523E5MGFM#30 operate with a single 3.3-V supply, and what are the voltage requirements for analog functions?

Yes, the R5F523E5MGFM#30 operates from a single 1.8–5.5-V VCC supply. However, the analog section requires AVCC0 = 4.5–5.5 V for full specification of the 12-bit ADC and HVAIN inputs. When only the 12-bit ADC is active, AVCC0 may be as low as 1.8 V-but the 24-bit delta-sigma ADC, PGA, and excitation sources require the higher AVCC0 voltage to guarantee ±10-V input range and specified noise/drift performance.

How many communication interfaces does the R5F523E5MGFM#30 include, and which are available in the 64-pin package?

The R5F523E5MGFM#30 includes CAN (1 channel), SCI (6 channels), RSPI (1 channel), and I²C (1 channel). In the 64-pin PLQP0064KB-C package, all are fully available: CAN_TX/CAN_RX, SCI0–SCI5, RSPI, and RIIC. The block diagram and Table 1.2 confirm SCIg channels 0–5, RSCAN, RSPIc, and RIICa remain functional in this pin count-enabling concurrent CAN diagnostics, SPI sensor reads, and I²C EEPROM access.