Renesas R5F523E6ADFL#10

Overview

R5F523E6ADFL#10 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensor measurement, integrating two 24-bit delta-sigma ADCs (DSAD), rail-to-rail programmable gain instrumentation amplifiers (PGA), a 2.5-V low-drift voltage reference, and four excitation current sources - all operating at up to 32 MHz with 256 KB flash, 32 KB SRAM, and 8 KB data flash.

For engineers reviewing the R5F523E6ADFL#10 datasheet, R5F523E6ADFL#10 pinout, R5F523E6ADFL#10 application, or R5F523E6ADFL#10 equivalent, this MCU delivers deterministic real-time control, IEC60730-compliant self-test support, simultaneous 50/60 Hz rejection, and CAN 2.0B communication - critical for thermocouple, RTD, and load cell interface designs requiring <10 nV/°C offset drift and ±0.2% current matching.

Technical Context

The R5F523E6ADFL#10 implements a Harvard-architecture RXv2 CPU core with IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep. Its analog subsystem features dual 24-bit DSAD units with fourth-order sinc filters, selectable normal/low-power modes, and inter-unit synchronized conversion start.

It supports 32-MHz operation across 1.8–5.5 V supply, includes a dedicated low-speed oscillator for IWDT and LPT, and integrates hardware-assisted diagnostics for A/D converter, clock accuracy (CAC), RAM, and analog input disconnect detection - all aligned with IEC60730 Class B requirements.

Key Specifications

Pinout & Package

48-pin LFQFP (PLQP0048KB-B) package with 0.5 mm pitch, 7×7 mm body size, and exposed thermal pad. Pin functions include dual DSAD analog inputs (AIN0–AIN11), reference pins (REF0P/REF0N, REF1P/REF1N), excitation outputs (IEXC0–IEXC3), low-side switch (LSW), and CAN transceiver interface (CRXD0/CTXD0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6AGFL#30 and R5F523E5ADFL#30, the R5F523E6ADFL#10 provides optimal balance of memory headroom, industrial temperature range, and analog precision - making it the default choice for new designs targeting IEC60730 compliance and long-term supply stability.

Availability

R5F523E6ADFL#10 is available at Aetrix Electronics and suitable for industrial sensor modules, PLC analog input cards, and smart field instruments requiring stable component supply, long lifecycle support, and guaranteed traceability.

Supply support for R5F523E6ADFL#10 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 R5F523E6ADFL#10 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, featuring integrated delta-sigma ADCs, PGAs, excitation sources, and IEC60730 diagnostic hardware.

FAQ

What is the maximum effective resolution and data rate of the delta-sigma ADCs in R5F523E6ADFL#10?

The R5F523E6ADFL#10 integrates two 24-bit delta-sigma ADCs (DSAD0 and DSAD1) achieving up to 23-bit effective resolution at 7.6 SPS in normal mode. At higher output data rates (e.g., 15625 SPS), resolution decreases due to oversampling trade-offs, but simultaneous 50/60 Hz rejection remains active at 10 and 54 SPS. The R5F523E6ADFL#10 supports programmable modulator clock (500 kHz typ.) and oversampling ratios from 32 to 65536.

Does R5F523E6ADFL#10 support IEC60730 Class B compliance out of the box?

Yes, the R5F523E6ADFL#10 includes hardware-assisted self-test features required for IEC60730 Class B certification: RAM test via DOC, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, A/D converter diagnostic assist, and analog input disconnect detection. These features reduce software validation effort and are documented in Renesas Application Note R01AN3917.

What are the key differences between R5F523E6ADFL#10 and R5F523E6AGFL#30?

The R5F523E6ADFL#10 and R5F523E6AGFL#30 share identical core architecture, memory sizes (256 KB flash, 32 KB RAM), analog peripherals (dual DSAD, PGA, VREF, IEXC), and pinout. The sole difference is operating temperature grade: R5F523E6ADFL#10 is rated for –40°C to +85°C (D-grade), while R5F523E6AGFL#30 extends to –40°C to +105°C (G-grade). Firmware and PCB layout are fully interchangeable.

Can R5F523E6ADFL#10 drive a 4-wire load cell directly without external components?

Yes - the R5F523E6ADFL#10 integrates four precision excitation current sources (IEXC0–IEXC3) with ±0.2% matching and 5 ppm/°C drift matching, plus a low-side switch (LSW) with 10 Ω max on-resistance. This allows direct 4-wire bridge biasing and return-path switching. External components needed are only decoupling capacitors and optional ESD protection; no op-amps or discrete current sources are required.

How does the Event Link Controller (ELC) improve real-time performance in R5F523E6ADFL#10?

The ELC in R5F523E6ADFL#10 enables 56 types of hardware events (e.g., timer overflow, GPIO edge, SCI receive complete) to directly trigger peripheral actions - such as starting a DSAD conversion or updating a PWM duty cycle - without CPU involvement or interrupt latency. This reduces jitter, lowers ISR overhead, and allows the CPU to remain in deep sleep during background sensor acquisition cycles.