Renesas R5F523E6BGNF#40

Overview

R5F523E6BGNF#40 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 125 kSPS sampling rate, ±5-V analog input range, dual excitation current sources (50–1000 µA), rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), and 256 KB on-chip flash memory. It operates at up to 32 MHz across –40°C to +105°C and targets weight scales, pressure transmitters, and process monitoring systems requiring IEC 60730 compliance.

For engineers reviewing the R5F523E6BGNF#40 datasheet, R5F523E6BGNF#40 pinout, R5F523E6BGNF#40 application, or R5F523E6BGNF#40 equivalent, this MCU delivers calibrated high-resolution analog front-end performance with integrated CAN, SCI, and RSPI interfaces - critical for sensor signal conditioning, real-time diagnostics, and deterministic fieldbus communication in harsh environments.

Technical Context

The R5F523E6BGNF#40 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU and DSP extensions, enabling real-time floating-point math for sensor linearization and compensation algorithms. Its analog subsystem centers on the DSADB unit 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.

Power management includes three low-power modes (sleep, deep sleep, software standby), with LPT operating during standby using sub-clock or IWDT oscillator. Clock generation supports main (1–20 MHz), sub (32.768 kHz), and PLL inputs, while ELC enables event-triggered peripheral operation without CPU wake-up - essential for ultra-low-power sensor polling and fault response.

Key Specifications

Pinout & Package

PWQN0040KD-A is a 40-pin HWQFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Table 1.4 of R01DS0402EJ0100 Rev.1.00, including dedicated HVAIN0–HVAIN1 (±5 V tolerant), AVCC0/AVSS0, VREFH/VREFL, IEXC0/IEXC1, and DSAD-specific control signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6BGNF#40, R5F523E6KGNF#40 extends input voltage range to ±10 V at identical package and speed, while R5F523E5BGNF#40 reduces memory capacity by 50% - both retain full DSADB functionality, making them viable alternatives depending on analog interface requirements and firmware complexity.

Availability

R5F523E6BGNF#40 is available at Aetrix Electronics and suitable for industrial weight scales, pressure transmitters, and process temperature monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6BGNF#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 infrastructure markets.

The RX23E-B Group - including R5F523E6BGNF#40 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated 24-bit delta-sigma ADCs, excitation sources, and functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BGNF#40?

The R5F523E6BGNF#40 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with lower-resolution filtering (e.g., sinc1); effective resolution decreases as data rate increases - 24-bit effective resolution is specified at 3.8 SPS. The modulator clock is fixed at 4 MHz (typical), and oversampling ratios range from 32 to 1,048,576.

Does R5F523E6BGNF#40 include an LCD controller/driver?

No, R5F523E6BGNF#40 does not include an LCD controller/driver. Per Figure 1.1 and Table 1.3 of R01DS0402EJ0100 Rev.1.00, the "B" suffix in R5F523E6BGNF#40 explicitly denotes exclusion of the LCD driver. This distinguishes it from "J", "L", and "N" variants which integrate LCD functionality. The R5F523E6BGNF#40 is optimized for space-constrained sensor nodes where display capability is handled externally.

What analog input voltage range is supported by R5F523E6BGNF#40?

R5F523E6BGNF#40 supports a ±5-V analog input range on its HVAIN0 and HVAIN1 pins. This is confirmed in Table 1.3 (List of Products) and Figure 1.1 (Part Number Decoding), where the "B" variant is defined as having "up to 5-V analog input range". While the DSADB can accept external ±10-V inputs via internal resistor networks, the rated safe input range remains ±5 V - exceeding this may require external protection circuitry.

Which communication interfaces are available on R5F523E6BGNF#40?

R5F523E6BGNF#40 includes CAN 2.0B (1 channel, up to 1 Mbps), six SCI channels (SCI0, SCI1, SCI5, SCI6, SCI8, SCI9), one I2C bus interface (RIICa, up to 400 kbps), and one RSPI channel (up to 16 Mbps). It does not include SCIh (LIN-capable) or LCD-related peripherals. All interfaces are fully functional in the 40-pin HWQFN package, with pin assignments detailed in Table 1.4 of the datasheet.

What is the operating temperature range for R5F523E6BGNF#40?

R5F523E6BGNF#40 is a G-version device rated for an operating ambient temperature range of –40°C to +105°C. This is specified in Table 1.3 (List of Products) and confirmed by the "G" in the part number per Figure 1.1. It is qualified for use in demanding industrial environments such as motor control cabinets, outdoor process instrumentation, and under-hood automotive subsystems.