Renesas R5F523E5MGFM#50

Overview

R5F523E5MGFM#50 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 ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 128-KB flash, 16-KB SRAM, and a CAN interface compliant to ISO11898-1 at up to 1 Mbps - all operating at 32 MHz with single-supply 1.8–5.5 V support.

For engineers reviewing the R5F523E5MGFM#50 datasheet, R5F523E5MGFM#50 pinout, R5F523E5MGFM#50 application, or R5F523E5MGFM#50 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC sampling rate, 10-V analog input range, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and operation across –40°C to +105°C.

Technical Context

The R5F523E5MGFM#50 belongs to the RX23E-B Group and 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 - a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, simultaneous 50/60 Hz rejection, and configurable PGA gain.

Clocking is managed via multiple oscillators: main clock (1–20 MHz), sub-clock (32.768 kHz), and dedicated IWDT oscillator. Power management includes three low-power modes and a software standby state with active low-power timer (LPT). The device supports IEC60730 safety compliance through built-in self-test features for ADC, clock accuracy (CAC), IWDT, and RAM.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5KGFM#50, the R5F523E5MGFM#50 trades maximum sampling rate (31.25 vs. 125 kSPS) for identical thermal robustness and lower cost in fixed-rate metering applications; versus ADUCM360BCPZ-RL7, it delivers superior integration of CAN, excitation matching, and industrial temperature grade without external loop drivers.

Availability

R5F523E5MGFM#50 is available at Aetrix Electronics and suitable for industrial power metering, temperature monitoring, motor drive current sensing, and strain gauge interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5MGFM#50 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 automotive, industrial, and IoT markets.

The RX23E-B Group - including the R5F523E5MGFM#50 - was designed specifically for high-accuracy sensor signal acquisition in industrial automation, energy metering, and test equipment, integrating precision analog front ends with real-time MCU processing and functional safety features.

FAQ

What is the maximum sampling rate supported by the 24-bit delta-sigma ADC in the R5F523E5MGFM#50?

The R5F523E5MGFM#50 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 fourth-order sinc filtering. The device also supports lower rates (e.g., 10 SPS or 54 SPS) to enable simultaneous 50 Hz/60 Hz rejection for AC line noise suppression in industrial metering applications.

Does the R5F523E5MGFM#50 include an integrated voltage reference, and what are its key specifications?

Yes, the R5F523E5MGFM#50 includes an on-chip voltage reference with a nominal output of 2.5 V, ±0.5% initial accuracy, and a temperature drift of 8 ppm/°C over –40°C to +85°C. It delivers ±10 mA output current and is used as the reference for both the 24-bit delta-sigma ADC and the 16-bit DAC, enabling stable ratiometric measurements without external reference components.

Can the R5F523E5MGFM#50 drive RTD sensors directly, and how many excitation current sources does it provide?

Yes, the R5F523E5MGFM#50 can drive RTD sensors directly using its two integrated excitation current sources (IEXC0 and IEXC1). Each source is programmable from 50 µA to 1000 µA in discrete steps, with ±0.2% current matching and 5 ppm/°C drift matching - eliminating the need for external precision current sources in 2-, 3-, or 4-wire RTD configurations.

What is the operating temperature range specified for the R5F523E5MGFM#50, and which version code indicates this grade?

The R5F523E5MGFM#50 is rated for operation from –40°C to +105°C, indicated by the 'G' in its part number (R5F523E5MGFM#50). This industrial-grade temperature specification ensures reliable performance in demanding environments such as motor control cabinets, outdoor power meters, and factory-floor automation equipment.

How does the Event Link Controller (ELC) enhance system efficiency in the R5F523E5MGFM#50?

The Event Link Controller (ELC) in the R5F523E5MGFM#50 allows hardware-peripheral triggering without CPU involvement - for example, initiating ADC conversions upon MTU timer overflow or updating PWM duty cycle upon CAN message reception. This reduces interrupt latency, lowers CPU load during real-time tasks, and enables deterministic low-power operation with peripherals active while the CPU sleeps.