Renesas R5F523E5BGFL#10

Overview

R5F523E5BGFL#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 ±10-V input capability, 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, it delivers 64 DMIPS and supports IEC60730 functional safety compliance.

For engineers reviewing the R5F523E5BGFL#10 datasheet, R5F523E5BGFL#10 pinout, R5F523E5BGFL#10 application, or R5F523E5BGFL#10 equivalent, this MCU is selected for high-accuracy weigh scales, strain gauge interfaces, and precision sensor signal conditioning where simultaneous 50/60 Hz rejection, low offset drift (4 nV/°C), and background data flash operation are required.

Technical Context

The R5F523E5BGFL#10 implements a Harvard-architecture RXv2 CPU core with 5-stage pipeline, single-precision FPU (IEEE754), and memory protection unit (MPU). Its analog subsystem centers on the DSADB module - a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, selectable modulator clock (4 MHz typ.), and configurable oversampling ratio (32–1,048,576).

Digital integration includes one CAN 2.0B channel (1 Mbps), six SCIg interfaces (asynchronous/clock-sync/smart card), one RIIC (400 kbps), one RSPI (16 Mbps), four-channel DMAC, ELC for interrupt-free peripheral linking, and LPT for wake-up during software standby. Clocking supports main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL, and dedicated IWDT oscillator.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5LGFP, R5F523E5BGFL#10 offers identical analog performance in a compact 48-pin package but omits LCD support and reduces peripheral count; versus ADUCM360BCPZ, it provides native CAN, ELC-driven deterministic timing, and robust IEC60730 features - reducing system-level certification effort.

Availability

R5F523E5BGFL#10 is available at Aetrix Electronics and suitable for industrial weigh scales, strain gauge interfaces, PLC analog input modules, and high-accuracy temperature transmitters requiring stable component supply across extended temperature ranges.

Supply support for R5F523E5BGFL#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 IoT markets.

The RX23E-B Group - including R5F523E5BGFL#10 - was designed specifically for high-precision sensor signal conditioning in industrial measurement equipment, integrating metrology-grade analog peripherals with functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BGFL#10?

The R5F523E5BGFL#10 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB) when configured with fMOD = 4 MHz. At lower data rates (e.g., 10 or 54 SPS), it enables simultaneous 50 Hz/60 Hz rejection. The effective resolution is 24 bits at 3.8 SPS (gain = 1) and degrades predictably with increasing rate per datasheet Table 1.1.

Does R5F523E5BGFL#10 include an integrated CAN transceiver?

No, R5F523E5BGFL#10 integrates only the CAN protocol controller (RSCAN module) compliant with ISO11898-1. An external CAN transceiver (e.g., SN65HVD23x or TJA1042) must be used on the CAN_TX/CAN_RX pins to drive the physical bus. The MCU provides logic-level signals compatible with industry-standard isolated or non-isolated transceivers.

What analog input voltage range does R5F523E5BGFL#10 support on its HVAIN pins?

R5F523E5BGFL#10 supports a ±10-V input range on its HVAIN0–HVAIN3 pins, enabling direct connection to high-output sensors such as load cells and industrial voltage outputs without external level-shifting. This is enabled by internal high-voltage input circuitry distinct from standard analog inputs, and is confirmed in Table 1.1 and Figure 1.2 of the R01DS0402EJ0100 datasheet.

Is the 2.5-V voltage reference in R5F523E5BGFL#10 internally buffered and temperature-stable?

Yes, the R5F523E5BGFL#10 includes an internal 2.5-V voltage reference (VREF) with ±10 mA output current capability and a temperature drift of 8 ppm/°C over –40°C to +85°C. It is explicitly specified as low-drift and used as the default reference for the DSADB module unless overridden by an external reference applied to VREFH/VREFL pins.

Can R5F523E5BGFL#10 operate in deep sleep mode while maintaining DSADB conversion capability?

No - the 24-bit delta-sigma ADC (DSADB) requires PCLKC (up to 16 MHz) and is disabled in deep sleep mode. However, R5F523E5BGFL#10 supports software standby mode with the Low Power Timer (LPT) active, allowing periodic wake-up to initiate DSADB conversions via ELC or software trigger, preserving ultra-low power operation between measurements.