Renesas R5F523E6LGFP#50

Overview

R5F523E6LGFP#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 ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 256 KB on-chip flash, 32 KB SRAM, and CAN 2.0B interface - all operating at up to 32 MHz. Target use includes load cell signal conditioning, weigh scale controllers, and precision process transmitters.

For engineers reviewing the R5F523E6LGFP#50 datasheet, R5F523E6LGFP#50 pinout, R5F523E6LGFP#50 application, or R5F523E6LGFP#50 equivalent, key selection criteria include its 125 kSPS delta-sigma sampling rate, ±10-V HVAIN support, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and IEC60730-compliant self-test features for functional safety-critical designs.

Technical Context

The R5F523E6LGFP#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU and DSP extensions, enabling real-time floating-point sensor compensation algorithms. Its analog subsystem centers on the DSADB unit synchronized to PCLKC (≤16 MHz), with configurable sinc filters, simultaneous 50/60 Hz rejection, and hardware-assisted disconnect detection for ±10-V differential inputs.

Power management includes three low-power modes (sleep, deep sleep, software standby), LPT operation during standby, and voltage monitoring across three independent LVD circuits. Clocking supports main (1–20 MHz), sub (32.768 kHz), and on-chip oscillators, with CAC for frequency accuracy validation - critical for time-sensitive metrology and calibration routines.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 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 R5F523E6NGFP#50 and R5F523E5LGFP#50, the R5F523E6LGFP#50 uniquely delivers full ±10-V HVAIN support combined with 125 kSPS DSADB throughput and 256 KB flash - making it the only variant qualified for high-dynamic-range, high-speed industrial metrology where both input range and sampling bandwidth are simultaneously critical.

Availability

R5F523E6LGFP#50 is available at Aetrix Electronics and suitable for industrial weigh scale controllers, high-accuracy process transmitters, and structural health monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6LGFP#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 - including the R5F523E6LGFP#50 - was designed specifically for high-precision analog measurement in industrial automation, targeting applications demanding integrated metrology-grade signal chains with functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in the R5F523E6LGFP#50?

The R5F523E6LGFP#50 supports a maximum delta-sigma ADC sampling rate of 125 kSPS. This is achievable with modulator clock fMOD = 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 - a capability confirmed in the DSADB section of the R01DS0402EJ0100 datasheet.

Does the R5F523E6LGFP#50 support ±10-V analog inputs, and which pins are used?

Yes, the R5F523E6LGFP#50 supports ±10-V differential analog inputs via dedicated HVAIN0–HVAIN3 pins (pins 73–76, 83–86 per Table 1.4). These pins connect directly to the DSADB unit and are validated for ±10-V operation in the "Analog front end (AFEA)" section of the datasheet, including integrated voltage fault detection and disconnect assist.

What is the operating temperature range specified for the R5F523E6LGFP#50?

The R5F523E6LGFP#50 is a G-version device rated for operation from –40°C to +105°C ambient temperature. This is explicitly defined in Table 1.3 (List of Products) and Figure 1.1 (Part Number Decoding), where the "G" suffix denotes the extended industrial temperature grade - critical for deployment in hot enclosures or outdoor industrial environments.

How many excitation current sources does the R5F523E6LGFP#50 integrate, and what are their specifications?

The R5F523E6LGFP#50 integrates two fully programmable excitation current sources (IEXC0 and IEXC1), each configurable from 50 µA to 1000 µA in six discrete steps. Per the datasheet, they provide ±0.2% current matching and 5 ppm/°C drift matching - enabling precise, matched biasing of 3- or 4-wire RTDs and resistive bridge sensors without external DACs or op-amps.

Is the R5F523E6LGFP#50 pin-compatible with other members of the RX23E-B Group in the same package?

Yes, all RX23E-B Group devices in the PLQP0100KB-B (100-pin LFQFP) package - including R5F523E6LGFP#50, R5F523E6NGFP#50, and R5F523E5LGFP#50 - share identical pinouts and mechanical footprint. Functional differences (e.g., HVAIN support, DSADB speed, memory size) are implemented internally; no PCB redesign is needed when migrating between these variants.