Renesas R5F523E5SGFL#50

Overview

R5F523E5SGFL#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensor measurement, featuring dual 24-bit delta-sigma ADCs (DSAD0/DSAD1), rail-to-rail programmable gain instrumentation amplifiers (gain = 1–128), 2.5 V low-drift voltage reference (10 ppm/°C), four excitation current sources (50–1000 µA), and integrated CAN 2.0B interface. It operates at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, targeting thermocouple and RTD-based temperature monitoring systems.

For engineers reviewing the R5F523E5SGFL#50 datasheet, R5F523E5SGFL#50 pinout, R5F523E5SGFL#50 application, or R5F523E5SGFL#50 equivalent, this MCU delivers verified 23-bit effective resolution at 7.6 SPS, simultaneous 50/60 Hz rejection, ±0.2% excitation current matching, and IEC60730-compliant self-diagnostic support for A/D, clock accuracy, and RAM - critical for functional safety in industrial process control and energy metering.

Technical Context

The R5F523E5SGFL#50 integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, programmable gain instrumentation amplifiers, and dedicated analog front-end resources including bias voltage generation, low-side switch (10 Ω), and analog multiplexer routing. Its RXv2 CPU core executes at 32 MHz (64 DMIPS), supports IEEE 754 single-precision FPU, and includes memory protection unit (MPU) and on-chip debugging via FINE interface.

It implements event-driven operation through the Event Link Controller (ELC), enabling timer-triggered A/D conversion and module coordination without CPU intervention. Clock management includes main oscillator (1–20 MHz), PLL (4–8 MHz input), and dedicated IWDT oscillator (15 kHz), with three low-power modes and LPT operation during software standby.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad (thermal pad not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision sensor measurement applications.

Compared with R5F523E5ADFL#30 and R5F523E5SGNF#20, the R5F523E5SGFL#50 uniquely combines extended temperature operation (–40°C to +105°C), full 6-channel differential DSAD support, and 48-pin LFQFP mechanical robustness - making it optimal for under-hood automotive sensors and high-reliability industrial controllers where thermal margin and analog channel density are critical.

Availability

R5F523E5SGFL#50 is available at Aetrix Electronics and suitable for industrial temperature monitoring, energy metering, motor drive current sensing, and process control transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5SGFL#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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC products for automotive, industrial, infrastructure, and IoT applications.

The RX23E-A Group, including R5F523E5SGFL#50, was designed specifically for high-accuracy sensor signal acquisition in industrial automation - integrating metrology-grade delta-sigma ADCs, excitation sources, and functional safety features into a single 32-bit MCU platform.

FAQ

What is the maximum effective resolution and data rate of the delta-sigma ADCs in R5F523E5SGFL#50?

The R5F523E5SGFL#50 features two 24-bit delta-sigma A/D converters with up to 23-bit effective resolution at 7.6 SPS in normal mode. Output data rates range from 7.6 SPS to 15,625 SPS (normal) or 1.9 SPS to 3,906 SPS (low-power mode). Simultaneous 50/60 Hz rejection is supported at 10 and 54 SPS output rates, confirmed in the device's DSAD specification table.

Does R5F523E5SGFL#50 support IEC60730 compliance out of the box?

Yes, R5F523E5SGFL#50 includes hardware-assisted self-diagnostic functions required for Class B compliance: A/D converter diagnostic, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) verification, RAM test support via Data Operation Circuit (DOC), and analog input disconnect detection. These features are documented in Section 1.1 "Useful functions for IEC60730 compliance" of the datasheet.

What are the excitation current source specifications for R5F523E5SGFL#50?

R5F523E5SGFL#50 provides four excitation current sources (IEXC0–IEXC3) with programmable output from 50 µA to 1000 µA in six discrete steps. Matching accuracy is ±0.2%, and drift matching is 5 ppm/°C - enabling precise 3- and 4-wire RTD measurements without external calibration. Sources are configurable per channel and support both constant-current and pulsed operation.

Can R5F523E5SGFL#50 operate with a single 3.3 V supply across its full 32 MHz frequency range?

Yes, R5F523E5SGFL#50 supports 32 MHz operation at VCC = 3.3 V, which falls within the 2.7–5.5 V range specified for maximum frequency. The device also supports lower frequencies at reduced voltages (e.g., 16 MHz at 2.4–2.7 V, 8 MHz at 1.8–2.4 V), and AVCC0 may be supplied independently at 1.8–5.5 V when only the 12-bit ADC is active.

What package and pin count does R5F523E5SGFL#50 use, and is it RoHS compliant?

R5F523E5SGFL#50 uses a 48-pin LFQFP package (PLQP0048KB-B), 7 × 7 mm body with 0.5 mm pitch. It is RoHS compliant and halogen-free, as confirmed in Renesas' official part marking and packaging documentation (Ordering Information section, R01DS0330EJ0130 Rev.1.30). Lead finish is matte tin.