Renesas R5F523E5MGNF#00

Overview

R5F523E5MGNF#00 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 31.25 kSPS max sampling rate, ±5-V input range, 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. Designed for load cell, pressure sensor, and weigh scale front ends operating from –40°C to +105°C.

For engineers reviewing the R5F523E5MGNF#00 datasheet, R5F523E5MGNF#00 pinout, R5F523E5MGNF#00 application, or R5F523E5MGNF#00 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC performance at ±5 V full-scale, integrated PGA and excitation sources for bridge sensor conditioning, CAN interface compliance with ISO11898-1, and HWQFN-40 package compatibility with space-constrained industrial modules.

Technical Context

The R5F523E5MGNF#00 implements the RXv2 CPU core running at up to 32 MHz (64 DMIPS), with IEEE 754-compliant single-precision FPU and memory protection unit (MPU). Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), supporting fourth- and fifth-order sinc digital filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Digital peripherals include one CAN channel (1 Mbps), six SCIg interfaces, one RIIC, one RSPI, four-channel DMAC, and ELC-driven event-triggered operation-enabling low-CPU-load sensor data acquisition and real-time control without interrupt overhead. The device operates across 1.8–5.5 V supply and supports deep sleep modes with LPT wake-up.

Key Specifications

Pinout & Package

Packaged in a 40-pin HWQFN (PWQN0040KD-A), the R5F523E5MGNF#00 features 26 general-purpose I/O pins (5-V tolerant, open-drain capable), dedicated HVAIN± inputs for ±5-V differential measurements, AVCC0/AVSS0 power rails for analog section, and dedicated pins for CANH/CANL, SCI, RSPI, and I²C interfaces. The package supports reflow soldering and thermal pad grounding for analog noise reduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5KGNF#00, the R5F523E5MGNF#00 trades ±10-V input range for optimized noise floor at ±5 V and reduced system cost via integrated excitation and CAN. Against ADS124S08IRHBT, it delivers full sensor-node functionality-including firmware-defined calibration, diagnostics, and industrial networking-in a single chip.

Availability

R5F523E5MGNF#00 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, and structural monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5MGNF#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 applications.

The RX23E-B Group, including R5F523E5MGNF#00, was designed specifically for high-accuracy sensor signal conditioning in industrial automation-integrating metrology-grade analog front ends with real-time control and functional safety features.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5MGNF#00?

The R5F523E5MGNF#00 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS, confirmed in Table 1.3 of the R01DS0402EJ0100 datasheet. This rate applies to the M-variant configuration (R5F523E5MGNF#00) with ±5-V input range and is achieved using the internal 4-MHz modulator clock. Lower rates (e.g., 10 or 54 SPS) enable simultaneous 50/60 Hz rejection.

Does R5F523E5MGNF#00 include an integrated CAN transceiver?

No, the R5F523E5MGNF#00 integrates only the CAN protocol controller (RSCAN module) compliant with ISO11898-1. An external CAN transceiver (e.g., SN65HVD230) must be used on the PCB to drive the CANH/CANL bus lines. The MCU provides dedicated CANH/CANL pins and supports bit rates up to 1 Mbps with programmable timing registers.

What analog input voltage range does R5F523E5MGNF#00 support?

The R5F523E5MGNF#00 supports a ±5-V differential input range on its HVAIN pins, as specified in Table 1.3 for the "M" variant (31.25 kSPS, 5 V). This is distinct from the "K" and "L" variants which support ±10 V. The ±5-V range is optimized for common industrial bridge sensors and ensures lower noise and higher effective resolution within that span.

Can R5F523E5MGNF#00 operate across the full –40°C to +105°C temperature range?

Yes, the R5F523E5MGNF#00 is a G-version device rated for operation from –40°C to +105°C, as indicated by the "G" in its part number per Figure 1.1. This rating covers all embedded peripherals including the 24-bit delta-sigma ADC, PGA, excitation sources, and CAN controller-validated across the full range in Renesas' characterization testing.

What development tools are supported for R5F523E5MGNF#00 firmware development?

R5F523E5MGNF#00 is supported by Renesas' e2 studio IDE, CS+ (formerly CubeSuite+), and the E2 emulator debugger via the FINE interface. Hardware evaluation is enabled by the RX23E-B Evaluation Board (YRDKRX23E), which provides access to all HVAIN, CAN, SCI, and RSPI signals, along with jumper-configurable sensor interface circuits for rapid prototyping.