Renesas R5F523E6NDFN#10

Overview

R5F523E6NDFN#10 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 a low-drift 2.5-V voltage reference (8 ppm/°C). Operating at up to 32 MHz with 256 KB flash, 32 KB SRAM, and CAN interface, it targets load cell, pressure sensor, and weigh scale front-end systems.

For engineers reviewing the R5F523E6NDFN#10 datasheet, R5F523E6NDFN#10 pinout, R5F523E6NDFN#10 application, or R5F523E6NDFN#10 equivalent, key selection criteria include its 80-pin LFQFP package, 31.25 kSPS delta-sigma ADC performance, ±5-V analog input capability, integrated PGA and excitation sources, and ISO11898-1 CAN compliance - all validated for IEC60730 Class B functional safety support.

Technical Context

The R5F523E6NDFN#10 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and memory protection unit (MPU) for deterministic real-time control. 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 at 10/54 SPS, and offset/gain error calibration.

Digital integration includes a single-channel CAN controller (RSCAN), six SCI interfaces (SCIg), one RSPI, one RIIC, ELC for interrupt-free peripheral chaining, and DTC/DMAC for autonomous data movement. Clocking supports main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL, and dedicated IWDT oscillator - with independent clock domains for ICLK (32 MHz), PCLKC (16 MHz for DSAD), and PCLKD (32 MHz for S12AD).

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6JDFN#10, R5F523E6NDFN#10 removes LCD overhead for cleaner analog signal paths and lower power; versus R5F523E5NDFN#10, it doubles flash/RAM to support advanced calibration models, secure boot, and CAN FD-ready firmware expansion.

Availability

R5F523E6NDFN#10 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, and energy monitoring sensors requiring stable component supply across extended product lifecycles.

Supply support for R5F523E6NDFN#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 infrastructure markets.

The RX23E-B Group - including R5F523E6NDFN#10 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated delta-sigma ADCs, PGAs, excitation sources, and functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6NDFN#10?

The R5F523E6NDFN#10 supports a maximum sampling rate of 31.25 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achieved with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower rates (e.g., 10 or 54 SPS), the device delivers simultaneous 50 Hz/60 Hz rejection for mains-noise immunity - a key capability confirmed in the R01DS0402EJ0100 datasheet Section 1.1.

Does R5F523E6NDFN#10 include an integrated CAN controller?

Yes, R5F523E6NDFN#10 integrates a single-channel CAN module (RSCAN) compliant with ISO11898-1, supporting standard and extended frames at up to 1 Mbps. It requires an external CAN transceiver (e.g., SN65HVD23x) for physical layer interfacing. The module includes 16 message boxes, loopback mode for self-test, and hardware timestamping - features validated in the RX23E-B Group datasheet Section 1.1 and Figure 1.2 block diagram.

What analog input voltage range does R5F523E6NDFN#10 support?

R5F523E6NDFN#10 supports a ±5-V analog input range on its HVAIN pins, as specified in Table 1.3 (List of Products) and confirmed by the "N" suffix in its part number per Figure 1.1. This is distinct from "K"/"L" variants offering ±10-V range. The ±5-V capability enables direct connection to industrial bridge sensors without external level-shifting, and is electrically validated in the DSADB electrical characteristics section of R01DS0402EJ0100.

Is R5F523E6NDFN#10 qualified for IEC60730 Class B compliance?

Yes, R5F523E6NDFN#10 includes hardware-assisted self-diagnostic features explicitly intended for IEC60730 Class B compliance, including ADC self-test, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) diagnostics, RAM test assistance via DOC, and analog input disconnect detection. These capabilities are documented in the "Useful functions for IEC60730 compliance" section of the datasheet and supported by Renesas' functional safety documentation kit.

What is the operating temperature range for R5F523E6NDFN#10?

R5F523E6NDFN#10 is rated for an operating ambient temperature range of –40°C to +85°C, indicated by the "D" suffix in its part number per Figure 1.1. This grade is validated across all specifications in the R01DS0402EJ0100 datasheet, including analog performance (e.g., PGA drift, VREF stability) and flash endurance. It is not rated for the extended –40°C to +105°C (G-grade) range offered by variants like R5F523E6NGFN#10.