Renesas R5F523E5SGFL#30

Overview

R5F523E5SGFL#30 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial sensor signal conditioning, 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), and integrated excitation current sources (50–1000 µA). It operates at 32 MHz with 128 KB flash, 16 KB SRAM, and supports IEC60730-compliant diagnostics in –40°C to +105°C ambient.

For engineers reviewing the R5F523E5SGFL#30 datasheet, R5F523E5SGFL#30 pinout, R5F523E5SGFL#30 application, or R5F523E5SGFL#30 equivalent, key selection criteria include its dual 24-bit DSAD units with sinc4 filtering, simultaneous 50/60 Hz rejection at 10/54 SPS, PGA offset drift of 10 nV/°C, and support for thermocouple/resistive temperature detector (RTD) front-end topologies with on-chip bias and low-side switch (10 Ω).

Technical Context

The R5F523E5SGFL#30 implements a CISC Harvard architecture with 5-stage pipeline and variable-length instructions, enabling 64 DMIPS at 32 MHz. Its analog subsystem integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, programmable data rates (1.9–15625 SPS), and inter-unit synchronized start capability.

Digital peripherals include one CAN 2.0B channel (1 Mbps), three SCIg interfaces (asynchronous/clock-sync/Smart Card), one RIIC (400 kbps), one RSPI (16 Mbps), six MTU2a timer channels, and an Event Link Controller (ELC) that enables interrupt-free module triggering and CPU-sleep-linked operation between DSAD, timers, and communication modules.

Key Specifications

Pinout & Package

48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed thermal pad. Pinout validated per Renesas R01DS0330EJ0130 Rev.1.30, Pages 14–15 (48-pin assignment) and Table 1.4 (pin functions).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5ADFL#30, the R5F523E5SGFL#30 adds extended temperature operation and retains identical analog performance; versus ADS131M04IPBSR, it integrates full MCU functionality and diagnostics but requires firmware development instead of pure analog configuration.

Availability

R5F523E5SGFL#30 is available at Aetrix Electronics and suitable for industrial weigh scales, RTD temperature transmitters, strain gauge pressure sensors, and PLC analog input modules requiring stable component supply across long production lifecycles.

Supply support for R5F523E5SGFL#30 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 specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The RX23E-A Group, including R5F523E5SGFL#30, was designed specifically for high-accuracy sensor signal conditioning in industrial automation, focusing on metrology-grade analog performance, functional safety support, and seamless integration of delta-sigma ADCs with embedded processing.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F523E5SGFL#30?

The R5F523E5SGFL#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 32 MHz, delivering 64 DMIPS performance. It uses a CISC Harvard architecture with a 5-stage pipeline and variable-length instructions, enabling ultra-compact code and deterministic real-time execution. The R5F523E5SGFL#30 also includes an IEEE 754-compliant 32-bit floating-point unit and memory protection unit for robust embedded applications.

How many delta-sigma A/D converters does the R5F523E5SGFL#30 integrate, and what is their effective resolution?

The R5F523E5SGFL#30 integrates two independent 24-bit delta-sigma A/D converters (DSAD0 and DSAD1), each supporting up to 23-bit effective resolution at 7.6 SPS with gain = 1. Both units feature fourth-order sinc filtering, programmable data rates (1.9–15625 SPS), and simultaneous 50/60 Hz rejection at specific output rates. The R5F523E5SGFL#30 supports inter-unit synchronized start for correlated multi-sensor acquisition.

Does the R5F523E5SGFL#30 support IEC60730 Class B compliance, and which built-in functions assist certification?

Yes, the R5F523E5SGFL#30 includes dedicated hardware features for IEC60730 Class B compliance, including self-diagnostic assistance for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test support via the data operation circuit (DOC), and analog input disconnect detection. These functions reduce software validation burden and enable systematic fault coverage - critical for R5F523E5SGFL#30 deployments in safety-critical industrial equipment.

What are the excitation current source specifications of the R5F523E5SGFL#30, and how are they used in RTD measurement?

The R5F523E5SGFL#30 provides four excitation current sources (IEXC0–IEXC3) with programmable output from 50 µA to 1000 µA, current matching of ±0.2%, and drift matching of 5 ppm/°C. In RTD measurement, these sources enable precise 2-, 3-, or 4-wire configurations; the LSW pin controls a low-side switch (10 Ω) to cancel lead resistance in 3-/4-wire setups. This architecture ensures high-accuracy ratiometric measurements - a core capability of the R5F523E5SGFL#30 for temperature sensing.

What package type and pin count does the R5F523E5SGFL#30 use, and is thermal management supported?

The R5F523E5SGFL#30 uses a 48-pin LFQFP package (PLQP0048KB-B) with 7 × 7 mm body size and 0.5 mm pitch, including an exposed thermal pad for enhanced heat dissipation. The package supports automated optical inspection and high-density routing. Thermal design guidance in the datasheet recommends direct connection of the thermal pad to a large copper pour for optimal junction-to-board conduction - essential for sustained operation at +105°C ambient, as rated for the R5F523E5SGFL#30.