Renesas R5F523E6KGNF#40

Overview

R5F523E6KGNF#40 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing, featuring a 24-bit delta-sigma ADC with ±10-V input capability, 256 KB on-chip flash, 32 KB SRAM, and integrated excitation current sources - deployed in battery-powered weigh scales, strain-gauge transmitters, and precision load-cell interfaces.

For engineers reviewing the R5F523E6KGNF#40 datasheet, R5F523E6KGNF#40 pinout, R5F523E6KGNF#40 application, or R5F523E6KGNF#40 equivalent, key selection criteria include its 10-V analog input range, 125 kSPS delta-sigma sampling rate, 32 MHz CPU performance, CAN 2.0B interface, and HWQFN-40 package with 13 GPIOs - all validated for IEC 60730 Class B compliance in safety-critical measurement systems.

Technical Context

The R5F523E6KGNF#40 integrates a dedicated analog front end (AFEA) with rail-to-rail programmable gain instrumentation amplifier (PGA), ±10-V HVAIN pins, two 50–1000 µA excitation current sources, and a 2.5 V low-drift voltage reference (8 ppm/°C). Its DSADB module operates at up to 125 kSPS with fourth- and fifth-order sinc filtering for simultaneous 50/60 Hz rejection.

It employs an event link controller (ELC) to trigger ADC conversions, PWM outputs, and D/A updates without CPU intervention, enabling ultra-low-power operation in software standby mode using the low-power timer (LPT) and sub-clock oscillator - critical for continuous monitoring in energy-constrained industrial nodes.

Key Specifications

Pinout & Package

PWQN0040KD-A is a 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad, rated for –40°C to +105°C operation. It provides 13 general-purpose I/O pins (5-V tolerant, open-drain capable), 2 HVAIN inputs (±10 V), AVCC0/AVSS0 power rails, VREFH/VREFL reference pins, IEXC1/IEXC2 excitation outputs, and dedicated DSAD clock/control signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6KGNF#40, R5F523E6KDNF offers identical analog performance and feature set at lower temperature grade, while ADUCM360BCPZ-RL7 trades CAN, excitation sources, and higher sampling for lower active current and simpler toolchain - making R5F523E6KGNF#40 optimal for thermally demanding, fieldbus-connected sensor nodes requiring ±10-V input and embedded signal conditioning.

Availability

R5F523E6KGNF#40 is available at Aetrix Electronics and suitable for industrial weigh scales, strain-gauge transmitters, portable test equipment, and energy monitoring sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6KGNF#40 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 - with over 40 years of embedded system expertise.

The RX23E-B Group targets high-accuracy industrial sensing, integrating precision analog front ends with robust MCU functionality to replace discrete signal chains in load cells, pressure sensors, and metering systems.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6KGNF#40?

The R5F523E6KGNF#40 supports a maximum delta-sigma ADC sampling rate of 125 kSPS at 24-bit resolution with appropriate oversampling ratio and filter configuration. This rate is achievable with the DSADB module using a 4 MHz modulator clock and fourth-order sinc filtering - enabling high-speed transient capture while maintaining noise performance for precision industrial measurements.

Does R5F523E6KGNF#40 include an integrated LCD controller?

No, the R5F523E6KGNF#40 does not include an LCD controller. Per Figure 1.1 and Table 1.3, the "K" suffix denotes a variant with ±10-V analog input capability and no LCD driver - unlike "L" or "J" variants. This omission reduces die size and power consumption, optimizing the R5F523E6KGNF#40 for compact, non-display sensor interface applications.

What are the supported excitation current settings for bridge sensor biasing in R5F523E6KGNF#40?

The R5F523E6KGNF#40 provides two independent excitation current sources (IEXC1/IEXC2) with programmable output values of 50 µA, 100 µA, 250 µA, 500 µA, 750 µA, and 1000 µA. Current matching is ±0.2%, and drift matching is 5 ppm/°C - ensuring stable, matched biasing for Wheatstone bridge sensors across temperature in precision weighing and transducer applications.

Is R5F523E6KGNF#40 qualified for IEC 60730 Class B compliance?

Yes, the R5F523E6KGNF#40 includes hardware-assisted self-diagnostic functions required for IEC 60730 Class B, including ADC diagnostic modes, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT), RAM test support via DOC, and voltage monitor diagnostics - all documented in the R01DS0402EJ0100 datasheet for functional safety implementation.

What package type and pin count does R5F523E6KGNF#40 use?

The R5F523E6KGNF#40 uses the PWQN0040KD-A package: a 40-pin HWQFN with 6 × 6 mm body size, 0.5 mm pitch, and exposed thermal pad. It provides 13 GPIOs, 2 ±10-V analog inputs (HVAIN0/HVAIN1), dual excitation outputs (IEXC1/IEXC2), and dedicated DSAD reference and clock pins - optimized for space-constrained industrial sensor modules.