Renesas R5F523E5AGFL#30

Overview

R5F523E5AGFL#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 (PGA ×8 gain settings), 2.5 V low-drift voltage reference (10 ppm/°C), and integrated excitation current sources (50–1000 µA). It operates at up to 32 MHz with 128 KB flash, 16 KB SRAM, and supports IEC60730 safety compliance in –40°C to +105°C environments.

For engineers reviewing the R5F523E5AGFL#30 datasheet, R5F523E5AGFL#30 pinout, R5F523E5AGFL#30 application, or R5F523E5AGFL#30 equivalent, this device delivers calibrated analog front-end performance for thermocouple, RTD, and strain gauge measurement systems requiring simultaneous 23-bit effective resolution, 50/60 Hz rejection, and on-chip diagnostics without external signal chain components.

Technical Context

The R5F523E5AGFL#30 integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, programmable gain instrumentation amplifiers (gain = 1–128), and synchronized start capability. Its analog subsystem includes dedicated excitation current sources (IEXC0–IEXC3), bias voltage generator (VBIAS), low-side switch (10 Ω), and voltage/reference fault detectors.

Digital architecture centers on the RXv2 CPU core (64 DMIPS @ 32 MHz), FPU (IEEE 754 single-precision), MPU, and event-link controller (ELC) enabling interrupt-free peripheral coordination during sleep modes. Clocking supports main oscillator (1–20 MHz), PLL (4–8 MHz input), and independent IWDT oscillator (15 kHz).

Key Specifications

Pinout & Package

48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad not specified. Pin functions validated per Renesas R01DS0330EJ0130 Rev.1.30 datasheet pages 11–14.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5AGFL#30, the D-grade R5F523E5ADFL#30 offers identical functionality at lower thermal rating, while the HWQFN-based R5F523E5AGNF#20 reduces footprint and I/O count - both serve as functional alternatives when thermal or mechanical constraints permit compromise on channel density or operating margin.

Availability

R5F523E5AGFL#30 is available at Aetrix Electronics and suitable for industrial temperature monitoring, precision weigh scales, smart pressure transmitters, and medical sensor modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5AGFL#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

The RX23E-A Group, including R5F523E5AGFL#30, was designed specifically for high-accuracy sensor signal conditioning in industrial automation and process control systems requiring integrated analog front-end precision and functional safety support.

FAQ

What is the maximum effective resolution achievable with the R5F523E5AGFL#30's delta-sigma ADCs?

The R5F523E5AGFL#30 achieves up to 23-bit effective resolution with its 24-bit delta-sigma A/D converters when operating in normal mode at 7.6 SPS with gain = 1. This specification is measured under controlled conditions with internal reference and includes noise, linearity, and drift contributions. The R5F523E5AGFL#30 maintains this performance across its full –40°C to +105°C operating range due to on-chip calibration and low-drift PGA design.

Does the R5F523E5AGFL#30 support simultaneous sampling across both 24-bit ADC units?

Yes, the R5F523E5AGFL#30 supports inter-unit synchronized start of A/D conversion via software trigger or ELC event, enabling true simultaneous sampling across DSAD0 and DSAD1. This capability is essential for multi-sensor applications like 3-phase current/voltage measurement or differential bridge configurations where phase alignment between channels is critical. The R5F523E5AGFL#30 implements hardware-level synchronization without CPU intervention.

What excitation current source configurations are supported by the R5F523E5AGFL#30?

The R5F523E5AGFL#30 provides four independent excitation current sources (IEXC0–IEXC3) configurable from 50 µA to 1000 µA in six discrete steps. Sources can be paired for 4-wire RTD biasing or used individually for multiple sensors. Current matching is ±0.2% and drift matching is 5 ppm/°C, verified across the full operating temperature range. The R5F523E5AGFL#30 also includes hardware-assisted disconnect detection for each IEXC output.

How does the R5F523E5AGFL#30 meet IEC60730 safety requirements?

The R5F523E5AGFL#30 integrates hardware-assisted diagnostics for IEC60730 Class B compliance, including RAM test assistance via DOC, A/D converter self-test, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) disconnect detection, and voltage reference fault monitoring. These features are implemented in dedicated peripherals and require no external components. The R5F523E5AGFL#30 documentation provides ready-to-use diagnostic routines aligned with Annex H guidelines.

What is the role of the LSW pin on the R5F523E5AGFL#30?

The LSW (Low-Side Switch) pin on the R5F523E5AGFL#30 is a dedicated 10 Ω (max) NMOS output used to control sensor power return paths or enable/disable excitation current sinks. It supports up to 30 mA continuous current and integrates disconnect detection logic. In RTD or bridge applications, the R5F523E5AGFL#30 uses LSW to isolate sensor ground during diagnostics or to implement 3-wire RTD lead compensation schemes without external switches.