Renesas R5F523E6NGFP#50

Overview

R5F523E6NGFP#50 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 2.0B interface, it targets load cell, pressure transducer, and RTD signal conditioning systems.

For engineers reviewing the R5F523E6NGFP#50 datasheet, R5F523E6NGFP#50 pinout, R5F523E6NGFP#50 application, or R5F523E6NGFP#50 equivalent, key selection considerations include its 100-pin LFQFP package, 31.25 kSPS delta-sigma ADC performance at ±5 V full-scale, integrated PGA offset drift (4 nV/°C) and gain drift (1 ppm/°C), CAN bus compliance (ISO 11898-1, up to 1 Mbps), and IEC 60730 self-diagnostic support for safety-critical sensor nodes.

Technical Context

The R5F523E6NGFP#50 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 synchronized to PCLKC (≤16 MHz), featuring fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and hardware-assisted disconnect detection for HVAIN pins.

Digital peripherals include a single-channel CAN controller (RSCAN) with 16 message boxes, six SCIg interfaces supporting LIN and smart card modes, one RSPI (16 Mbps), one RIIC (400 kbps), and ELC-triggered ADC/DAC conversions-enabling low-CPU-overhead sensor data acquisition while the core remains in deep sleep mode.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 × 14 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6NGFP#50, R5F523E6LGFP#50 adds ±10-V input capability and LCD support at identical cost and footprint, while ADS124S08IRHBT trades integrated control for marginally better noise performance but demands additional MCU resources and PCB area.

Availability

R5F523E6NGFP#50 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, RTD temperature controllers, and electromagnetic flow meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6NGFP#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 is designed specifically for high-accuracy sensor signal conditioning - integrating precision analog front-ends, safety-certifiable firmware features, and real-time control capabilities in a single chip for industrial IoT edge nodes.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6NGFP#50?

The R5F523E6NGFP#50 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS at ±5-V input range. This rate is achieved with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower rates (e.g., 3.8 SPS), the device delivers 24-bit effective resolution with simultaneous 50/60 Hz rejection enabled.

Does R5F523E6NGFP#50 include an integrated voltage reference, and what is its stability?

Yes, R5F523E6NGFP#50 includes an on-chip 2.5-V voltage reference with ±1% initial accuracy and 8 ppm/°C temperature drift over –40 to +85°C. It supplies the delta-sigma ADC reference inputs (DSAD_VREFH/L) and supports ±10 mA output current, enabling stable high-precision conversions without external reference components.

Can R5F523E6NGFP#50 drive a CAN bus directly, or does it require an external transceiver?

R5F523E6NGFP#50 contains a CAN protocol controller (RSCAN module) compliant with ISO 11898-1 but requires an external CAN physical-layer transceiver (e.g., SN65HVD23x) for bus connection. The MCU provides CAN_TX and CAN_RX signals compatible with standard high-speed transceivers operating at up to 1 Mbps.

What analog input voltage range does R5F523E6NGFP#50 support on its HVAIN pins?

R5F523E6NGFP#50 supports a ±5-V differential input range on its HVAIN0–HVAIN3 pins. This is confirmed by Table 1.3 in the datasheet, where the "N" suffix in the part number denotes the 31.25 kSPS / ±5-V variant. The "K" and "L" variants support ±10 V but are not applicable to R5F523E6NGFP#50.

Is R5F523E6NGFP#50 qualified for industrial temperature range operation?

Yes, R5F523E6NGFP#50 is rated for industrial operation from –40°C to +85°C (D-version). The "G-version" (e.g., R5F523E6NGFP#50 is D-version; G-version would be R5F523E6NGFP#55) extends to –40°C to +105°C, but R5F523E6NGFP#50 itself is specified and tested for the D-grade temperature range.