Renesas R5F523E6LDFP#10

Overview

R5F523E6LDFP#10 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing and metering applications. It integrates a 24-bit delta-sigma ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 2.5-V low-drift voltage reference (8 ppm/°C), dual excitation current sources (50–1000 µA), and CAN 2.0B interface - all operating at up to 32 MHz with 256 KB flash and 32 KB SRAM.

For engineers reviewing the R5F523E6LDFP#10 datasheet, R5F523E6LDFP#10 pinout, R5F523E6LDFP#10 application, or R5F523E6LDFP#10 equivalent, this MCU delivers deterministic real-time control, IEC60730-compliant self-test support, simultaneous 50/60 Hz rejection, and hardware-accelerated signal conditioning for load cells, strain gauges, and precision weight scales without external signal chain components.

Technical Context

The R5F523E6LDFP#10 implements a Harvard-architecture RXv2 CPU core with 32-bit FPU (IEEE 754 compliant), memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep. Its analog subsystem centers on the DSADB module - a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, configurable modulator clock (4 MHz typ.), and ±10-V HVAIN pins directly interfacing high-voltage sensor bridges.

Clock management includes independent PCLK domains: PCLKC (≤16 MHz) for DSADB operation, PCLKD (≤32 MHz) for S12AD, and ICLK (≤32 MHz) for CPU execution. The integrated AFEA provides bias voltage generation ((AVCC0 + AVSS0)/2), temperature sensing (±5°C accuracy), and low-side switch (10 Ω max.) for sensor excitation control - all synchronized via ELC-triggered conversions.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin LFQFP, 14 × 14 mm, 0.5 mm pitch, lead-free, RoHS compliant. Thermal pad exposed on underside for enhanced power dissipation in continuous analog acquisition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6LDFP#10, R5F523E6LGBS offers higher temperature grade and smaller footprint at the cost of solder joint reliability trade-offs, while R5F523E5LDFP provides identical analog performance with half the flash/RAM - enabling tiered product variants without hardware redesign.

Availability

R5F523E6LDFP#10 is available at Aetrix Electronics and suitable for industrial weigh scales, energy meters, strain gauge monitoring systems, and process transmitters requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F523E6LDFP#10 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 R5F523E6LDFP#10 - was designed specifically for high-accuracy sensor signal acquisition and metrology-class measurement in harsh industrial environments, integrating precision analog peripherals with real-time MCU capabilities.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6LDFP#10?

The R5F523E6LDFP#10 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration - enabling high-speed precision acquisition for dynamic load cell or vibration monitoring applications. Lower rates (e.g., 10 or 54 SPS) provide simultaneous 50/60 Hz rejection.

Does R5F523E6LDFP#10 support ±10-V analog inputs, and how are they implemented?

Yes, R5F523E6LDFP#10 supports ±10-V analog inputs via dedicated HVAIN0–HVAIN3 pins. These pins are internally protected and routed directly to the 24-bit delta-sigma ADC's analog multiplexer, eliminating the need for external level-shifting or attenuation circuits when interfacing with industrial bridge sensors operating at ±10 V full scale.

What is the voltage reference accuracy and temperature stability of R5F523E6LDFP#10?

R5F523E6LDFP#10 features an on-chip 2.5-V voltage reference with ±0.5% initial accuracy and 8 ppm/°C temperature drift over –40 to +85°C. This specification ensures stable ADC full-scale calibration across industrial temperature ranges, reducing or eliminating the need for external reference ICs in metrology-grade designs.

Can R5F523E6LDFP#10 perform self-diagnostics required for IEC60730 compliance?

Yes, R5F523E6LDFP#10 includes hardware-assisted self-diagnostics for IEC60730 Class B compliance, including RAM test (via DOC), clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) validation, ADC offset/gain calibration, and analog input disconnect detection - all accessible through documented firmware routines.

Is R5F523E6LDFP#10 pin-compatible with other RX23E-B group MCUs in the same package?

R5F523E6LDFP#10 is pin-compatible with other 100-pin LFQFP variants in the RX23E-B Group (e.g., R5F523E5LDFP, R5F523E6NDFP), sharing identical pin functions and electrical characteristics. Differences lie in memory size, analog input range, and LCD support - all encoded in the part number suffix, not pin assignment.