Renesas R5F523E6JDFN#50

Overview

R5F523E6JDFN#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 256-KB on-chip flash, 32-KB SRAM, 8-KB data flash, integrated 24-bit delta-sigma ADC with 125-kSPS max sampling rate and ±5-V analog input range, and built-in LCD controller supporting 36 SEG × 8 COM. It operates across –40°C to +85°C and integrates CAN, SCI, I²C, RSPI, and precision analog front-end functions including programmable gain instrumentation amplifier, excitation current sources, and voltage reference.

For engineers reviewing the R5F523E6JDFN#50 datasheet, R5F523E6JDFN#50 pinout, R5F523E6JDFN#50 application, or R5F523E6JDFN#50 equivalent, key selection considerations include its 80-pin LFQFP package (PLQP0080KB-B), LCD driver inclusion, 125-kSPS delta-sigma ADC capability, 5-V analog input range, and support for IEC60730-compliant self-diagnostic functions in safety-critical sensor systems.

Technical Context

The R5F523E6JDFN#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS performance at 32 MHz, and Harvard architecture with 5-stage pipeline. Its analog subsystem centers on a single 24-bit delta-sigma ADC unit with configurable sinc filters, rail-to-rail PGA (gain 1–128), ±5-V HVAIN inputs, and simultaneous 50/60 Hz rejection at 10/54 SPS.

Timing and control are managed via ELC-driven event chaining, enabling low-power operation with MTU2a PWM generation, RTC calendar mode, and LPT operation during software standby. The MCU supports CAN 2.0B (1 Mbps), up to seven SCI channels, and dual A/D subsystems - the 24-bit DSAD for high-resolution measurements and an 8-channel 12-bit S12AD for fast auxiliary sampling.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-profile Quad Flat Package, 12 × 12 mm body, 0.5 mm 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 R5F523E6NDFN#50 and R5F523E5JDFN#50, the R5F523E6JDFN#50 uniquely combines maximum 125-kSPS delta-sigma sampling, full LCD driver support, and 256-KB flash in the 80-pin LFQFP footprint-making it optimal for feature-rich, self-contained industrial measurement devices requiring both high-resolution sensing and local HMI.

Availability

R5F523E6JDFN#50 is available at Aetrix Electronics and suitable for industrial weighing systems, energy metering devices, process temperature controllers, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-certified designs.

Supply support for R5F523E6JDFN#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, with deep expertise in real-time control and high-precision analog integration.

The RX23E-B Group-including the R5F523E6JDFN#50-is designed specifically for high-accuracy industrial sensing applications requiring integrated metrology-grade ADCs, excitation sources, and functional safety support, targeting weight scales, energy meters, and process controllers.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in the R5F523E6JDFN#50?

The R5F523E6JDFN#50 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC. This rate is achievable with modulator clock = 4 MHz and appropriate sinc filter configuration. At lower data rates (e.g., 3.8 SPS), the device achieves 24-bit effective resolution with simultaneous 50/60 Hz rejection-key for precision industrial measurement applications.

Does the R5F523E6JDFN#50 include an LCD controller, and what display configurations does it support?

Yes, the R5F523E6JDFN#50 includes an integrated LCD controller supporting 36 segment × 8 common (36 × 8) drive capability. It offers flexible biasing methods-internal voltage boosting, capacitor split, and external resistance division-and is explicitly enabled in the "J" variant per Renesas part numbering (Figure 1.1). This eliminates the need for external LCD driver ICs in panel meter and HMI designs.

What analog input voltage range is supported by the R5F523E6JDFN#50's HVAIN pins?

The R5F523E6JDFN#50's HVAIN pins support a ±5-V analog input range, consistent with its "J" suffix designation in Table 1.3. These pins include hardware-assisted ±10-V fault detection and disconnect monitoring, enabling robust interfacing with industrial sensors while protecting against overvoltage conditions in harsh environments.

How many excitation current sources does the R5F523E6JDFN#50 integrate, and what are their key specifications?

The R5F523E6JDFN#50 integrates two fully programmable excitation current sources (EXC0 and EXC1), each configurable from 50 µA to 1000 µA in discrete steps. They provide ±0.2% current matching and 5 ppm/°C drift matching-critical for high-accuracy ratiometric measurements with RTDs and strain gauges-without requiring external precision current DACs.

Is the R5F523E6JDFN#50 qualified for IEC60730 Class B compliance, and what hardware features support this?

Yes, the R5F523E6JDFN#50 includes dedicated hardware features for IEC60730 Class B compliance: self-diagnostic assistance for the delta-sigma ADC (offset/gain calibration), clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test support via Data Operation Circuit (DOC), and analog input disconnect detection. These reduce firmware validation burden for safety-critical industrial equipment.