Renesas R5F523E6BDFL#50

Overview

R5F523E6BDFL#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and analog signal acquisition. It integrates a 24-bit delta-sigma ADC with 125 kSPS max sampling rate, ±5-V analog input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 256 KB flash/32 KB SRAM - all operating at up to 32 MHz. It targets load cell, pressure sensor, and weigh scale front-end applications requiring low-drift, high-resolution measurement.

For engineers reviewing the R5F523E6BDFL#50 datasheet, R5F523E6BDFL#50 pinout, R5F523E6BDFL#50 application, or R5F523E6BDFL#50 equivalent, key selection criteria include its 48-pin LFQFP package (PLQP0048KB-B), absence of LCD controller, support for CAN, SCI, I²C, and RSPI interfaces, and built-in self-diagnostic features for IEC 60730 compliance in safety-critical measurement systems.

Technical Context

The R5F523E6BDFL#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination. Its analog subsystem centers on the DSADB module - a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, ±10-V-capable HVAIN pins (configured for ±5 V in this variant), and integrated PGA with 11 nV_RMS noise at gain=128.

Power management includes three low-power modes (sleep, deep sleep, software standby), a low-power timer (LPT) active during standby, and voltage detection circuits (LVDAb) with 14-level programmability. Clocking supports main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL, and dedicated IWDT oscillator - with independent clock domains for system (ICLK), peripheral (PCLK), and ADC (PCLKC) operation.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin Low-profile Quad Flat Package, 7 mm × 7 mm body, 0.5 mm lead 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 R5F523E6BDFL#50, R5F523E6JDFN adds LCD driving capability at the cost of larger package and pin count, while R5F523E5BDFL reduces memory capacity without affecting analog accuracy or sampling rate - making both viable alternatives depending on display needs or memory budget constraints.

Availability

R5F523E6BDFL#50 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, and energy metering sensors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for R5F523E6BDFL#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, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX23E-B Group - including R5F523E6BDFL#50 - was designed specifically for high-accuracy sensor signal conditioning in industrial measurement systems, integrating metrology-grade analog front ends with real-time MCU processing and functional safety features.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BDFL#50?

The R5F523E6BDFL#50 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with lower-resolution filtering modes (e.g., fifth-order sinc filter); at 3.8 SPS, it delivers 24-bit effective resolution with simultaneous 50/60 Hz rejection. The modulator clock is fixed at 4 MHz, and oversampling ratios range from 32 to 1,048,576.

Does R5F523E6BDFL#50 include an LCD controller?

No, R5F523E6BDFL#50 does not include an LCD controller. Per Renesas' part numbering scheme, the "B" suffix indicates absence of LCD driver functionality. This variant is optimized for compact, sensor-focused applications where display integration is handled externally. Models with "J", "L", or "N" suffixes (e.g., R5F523E6JDFN) include LCD support.

What analog input voltage range is supported by R5F523E6BDFL#50?

R5F523E6BDFL#50 supports a ±5-V analog input range on its HVAIN pins. Although the DSADB module is capable of ±10-V operation, this specific variant (denoted by "B" in the part number) is configured for ±5 V. The "K" and "L" variants support ±10 V; the "M" and "N" variants are limited to 31.25 kSPS sampling.

Which communication interfaces are available on R5F523E6BDFL#50?

R5F523E6BDFL#50 includes CAN (1 channel, ISO 11898-1, up to 1 Mbps), six SCI channels (asynchronous, clock-sync, smart card), one I²C bus interface (400 kbps, SMBus compatible), and one RSPI channel (16 Mbps). It lacks the LCD controller and RTC module found in larger-package variants like R5F523E6LDFP.

What is the operating temperature range for R5F523E6BDFL#50?

R5F523E6BDFL#50 is rated for industrial operation from –40°C to +85°C (D-version). The "D" in the part number explicitly denotes this temperature grade. The G-version (e.g., R5F523E6BGFL) extends to –40°C to +105°C but uses the same 48-pin LFQFP package and analog specifications.