Renesas R5F523E5JDFN#50

Overview

R5F523E5JDFN#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing applications, featuring a 32-MHz CPU core, 128-KB on-chip flash, 16-KB SRAM, 8-KB data flash, and an integrated 24-bit delta-sigma A/D converter with 125-kSPS maximum sampling rate and ±5-V input range. It includes a rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), voltage reference (2.5 V, 8 ppm/°C), and LCD controller supporting 36 SEG × 8 COM.

For engineers reviewing the R5F523E5JDFN#50 datasheet, R5F523E5JDFN#50 pinout, R5F523E5JDFN#50 application, or R5F523E5JDFN#50 equivalent, this MCU delivers deterministic real-time control with ELC-triggered peripheral coordination, IEC60730-compliant self-diagnostic support, CAN 2.0B interface (1 Mbps), and low-power operation across –40°C to +85°C.

Technical Context

The R5F523E5JDFN#50 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, 32-bit floating-point unit (IEEE 754 compliant), and memory protection unit (MPU). Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), with configurable sinc filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Digital peripherals operate under independent clock domains: ICLK (≤32 MHz) for CPU, PCLKA (≤32 MHz) for MTU2a, PCLKB (≤32 MHz) for most modules, and FCLK (≤32 MHz) for flash. The ELC enables interrupt-free inter-module triggering-e.g., MTU timer events initiating DSAD conversions-while the CPU remains in deep sleep mode.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-Profile Quad Flat Package, 12 mm × 12 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5JDFN#50, the R5F523E5NDFN#50 trades DSAD speed and LCD capability for identical package and cost optimization, while R5F523E5BDFM#50 reduces pin count and analog channel count to fit smaller form factors-neither offers pin compatibility, but both share the same RXv2 core, safety features, and peripheral architecture.

Availability

R5F523E5JDFN#50 is available at Aetrix Electronics and suitable for industrial weight scale systems, smart flow meters, energy monitoring modules, and programmable logic controller I/O cards requiring stable component supply, long-term lifecycle support, and IEC60730-compliant firmware development.

Supply support for R5F523E5JDFN#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 industrial, automotive, and infrastructure markets.

The RX23E-B Group targets high-accuracy industrial sensing applications, integrating precision analog front ends with robust real-time control and functional safety features to replace discrete signal chains in measurement equipment.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5JDFN#50?

The R5F523E5JDFN#50 supports a maximum DSAD sampling rate of 125 kSPS at 3.8 SPS effective resolution, achievable with fMOD = 4 MHz and appropriate sinc filter selection. At higher data rates, resolution decreases due to oversampling trade-offs; the device guarantees 24-bit effective resolution only at ≤3.8 SPS with gain = 1.

Does R5F523E5JDFN#50 include a built-in voltage reference, and what are its specifications?

Yes, the R5F523E5JDFN#50 integrates a precision voltage reference with 2.5 V nominal output, ±10 mA drive capability, and 8 ppm/°C temperature drift over –40°C to +85°C. This reference can be used directly by the DSAD and S12AD converters or bypassed for external reference input via VREFH/VREFL pins.

Can R5F523E5JDFN#50 operate in low-power modes while maintaining analog measurement capability?

Yes, the R5F523E5JDFN#50 supports software standby mode where the CPU and most peripherals halt, yet the low-power timer (LPT) and DSAD remain active. In this state, DSAD can perform conversions at 3.8 SPS with full 24-bit resolution, enabling battery-powered sensor nodes with multi-year operation.

What communication interfaces does R5F523E5JDFN#50 support for industrial fieldbus connectivity?

The R5F523E5JDFN#50 includes one ISO 11898-1 compliant CAN 2.0B channel (up to 1 Mbps), six SCIg channels supporting UART/LIN protocols, one I2C interface (400 kbps), and one RSPI port (16 Mbps). These enable direct integration into Modbus RTU, CANopen, or proprietary fieldbus networks without external transceivers.

How does the Event Link Controller (ELC) enhance deterministic timing in R5F523E5JDFN#50-based systems?

The ELC in R5F523E5JDFN#50 provides hardware-level event routing-e.g., an MTU2a timer overflow can directly trigger a DSAD conversion start without CPU involvement or interrupt latency. This ensures sub-microsecond timing consistency between analog acquisition and control actions, critical for closed-loop industrial systems.