Renesas R5F523E6ADNF#00

Overview

R5F523E6ADNF#00 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor systems. It integrates two 24-bit delta-sigma ADCs (DSAD), a rail-to-rail programmable gain instrumentation amplifier (PGA) with gains up to ×128, a low-drift 2.5 V voltage reference (10 ppm/°C), four excitation current sources (50–1000 µA), and a CAN interface compliant with ISO11898-1 at up to 1 Mbps - all in a 40-pin HWQFN package operating from –40°C to +85°C.

For engineers reviewing the R5F523E6ADNF#00 datasheet, R5F523E6ADNF#00 pinout, R5F523E6ADNF#00 application, or R5F523E6ADNF#00 equivalent, this MCU delivers verified 23-bit effective resolution at 7.6 SPS, simultaneous 50/60 Hz rejection, on-chip self-diagnostic support for IEC60730 Class B compliance, and ELC-driven synchronized A/D conversion without CPU intervention.

Technical Context

The R5F523E6ADNF#00 implements a CISC Harvard architecture with 5-stage pipeline, executing instructions at up to 32 MHz (64 DMIPS), and includes an IEEE754-compliant 32-bit FPU, memory protection unit (MPU), and on-chip debugging via FINE interface. Its analog subsystem features fourth-order sinc filtering, offset/gain calibration, and disconnect detection assist for both DSAD units.

It supports event-driven operation via the Event Link Controller (ELC), enabling timer-triggered A/D conversion, PWM synchronization, and inter-module linking while the CPU remains in deep sleep. Clock management includes PLL, on-chip oscillators (high/low-speed), and CAC for frequency accuracy monitoring.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (PWQN0040KD-A), 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6ADNF#00, R5F523E5ADNF#20 reduces memory for cost-constrained deployments, while R5F523E6ADFL#30 expands I/O count and peripheral channel count in a larger footprint - neither is pin-compatible, but both share identical DSAD, PGA, and CAN functionality for seamless analog subsystem reuse.

Availability

R5F523E6ADNF#00 is available at Aetrix Electronics and suitable for industrial sensor modules, smart transmitters, and energy metering systems requiring stable component supply, long-term lifecycle support, and guaranteed availability through 2030.

Supply support for R5F523E6ADNF#00 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 applications.

The RX23E-A Group - including R5F523E6ADNF#00 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated delta-sigma ADCs, excitation sources, and functional safety support.

FAQ

What is the maximum effective resolution achievable with the R5F523E6ADNF#00's delta-sigma ADCs?

The R5F523E6ADNF#00 achieves up to 23-bit effective resolution (ENOB) at 7.6 SPS in normal mode with gain = 1 and full-scale input. This value is measured and specified in the datasheet under conditions of low-noise layout, proper decoupling, and calibrated reference. The R5F523E6ADNF#00 maintains this performance across its full operating temperature range (–40°C to +85°C) due to its low-drift PGA and voltage reference.

Does the R5F523E6ADNF#00 support simultaneous sampling across both 24-bit delta-sigma ADC units?

Yes, the R5F523E6ADNF#00 supports inter-unit synchronized A/D conversion start via software trigger or ELC event. This allows deterministic phase alignment between DSAD0 and DSAD1 for multi-channel sensor applications such as 3-phase current measurement. The R5F523E6ADNF#00 implements hardware-level timing coordination to minimize skew between units.

Can the R5F523E6ADNF#00 operate with a single 3.3 V supply for both digital and analog domains?

Yes, the R5F523E6ADNF#00 operates with VCC = 3.3 V (within 2.7–5.5 V range), and AVCC0 may be tied directly to VCC when high-precision analog performance is not required. For optimal DSAD accuracy, Renesas recommends separate low-noise analog regulation and 0.47 µF decoupling on REFOUT, as specified in the R5F523E6ADNF#00 hardware design guidelines.

What level of IEC60730 compliance does the R5F523E6ADNF#00 support out-of-the-box?

The R5F523E6ADNF#00 includes hardware-assisted self-test features for A/D converter, clock frequency accuracy (CAC), independent watchdog timer (IWDT), RAM (via DOC), and analog input disconnect detection - collectively supporting Class B compliance. These features are documented in the R5F523E6ADNF#00 Functional Safety Manual and require no external components to implement basic diagnostic coverage.

Is the CAN interface on the R5F523E6ADNF#00 compatible with CAN FD?

No, the R5F523E6ADNF#00 implements a classical CAN 2.0B controller compliant with ISO11898-1, supporting standard and extended frames at up to 1 Mbps. It does not support CAN FD data rates, arbitration bit rates above 1 Mbps, or flexible data-length payloads. This limitation is explicitly stated in the R5F523E6ADNF#00 datasheet Section 1.1 and peripheral function table.