Renesas R5F523E6SDFL#30

Overview

R5F523E6SDFL#30 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial temperature sensing, featuring one 24-bit delta-sigma A/D converter (DSAD), a rail-to-rail programmable gain instrumentation amplifier (PGA) with gain up to 128, 2.5 V low-drift voltage reference (10 ppm/°C), and integrated excitation current sources (50–1000 µA). It operates at 32 MHz, delivers 64 DMIPS, includes 256 KB flash, 32 KB SRAM, and 8 KB data flash, and targets thermocouple and RTD measurement systems requiring IEC60730 compliance.

For engineers reviewing the R5F523E6SDFL#30 datasheet, R5F523E6SDFL#30 pinout, R5F523E6SDFL#30 application, or R5F523E6SDFL#30 equivalent, this device serves as a single-chip analog front-end + control solution for Class A/B temperature transmitters, digital panel meters, and industrial process controllers where 23-bit effective resolution, simultaneous 50/60 Hz rejection, and on-chip self-diagnostic functions are required.

Technical Context

The R5F523E6SDFL#30 implements a dedicated analog subsystem comprising two independent DSAD units-though only one unit (DSAD0) is enabled in this variant-each with fourth-order sinc filtering, offset/gain calibration, and synchronized start capability. Its PGA supports differential, pseudo-differential, and single-ended inputs across up to six channels, with programmable data rates (1.9–15.6 kSPS) and low-noise performance (30 nVRMS at gain=128).

It integrates a full peripheral suite for sensor system autonomy: CAN 2.0B (1 Mbps), three SCI interfaces (asynchronous/clock-sync/I²C/SPI modes), RSPI (16 Mbps), RIIC (400 kbps), 12-bit S12AD (1.4 µs conversion), ELC for interrupt-free module linking, and hardware CRC/DOC for functional safety. The MCU runs from 1.8–5.5 V and supports –40°C to +85°C operation in 48-pin LFQFP.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad not specified. Pinout validated per Renesas R01DS0330EJ0130 Rev.1.30, Pages 11–14.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6ADFL#30, the R5F523E6SDFL#30 reduces cost and footprint by omitting the second DSAD unit while retaining identical MCU performance, safety features, and peripheral set - ideal for single-sensor architectures. Versus ADS124S08IRHBT, it eliminates inter-IC communication latency and adds autonomous operation, but trades off maximum sample rate for integrated control.

Availability

R5F523E6SDFL#30 is available at Aetrix Electronics and suitable for industrial temperature transmitters, digital panel meters, and process controller I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for certified production programs.

Supply support for R5F523E6SDFL#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, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RX23E-A Group - including the R5F523E6SDFL#30 - was designed specifically for high-accuracy industrial sensor signal conditioning and control, integrating metrology-grade analog front-ends with robust real-time MCU capabilities.

FAQ

What is the key differentiator of the R5F523E6SDFL#30 versus standard RX23E-A MCUs?

The R5F523E6SDFL#30 is a targeted variant with exactly one 24-bit delta-sigma A/D converter (DSAD0), distinguishing it from the 'A' version (e.g., R5F523E6ADFL#30) which includes two DSAD units. This reduces cost and simplifies layout for single-sensor applications like standalone RTD transmitters, while preserving identical CPU performance, memory, peripherals, and safety features. Its part number suffix 'S' explicitly denotes single-DSAD configuration per Renesas' naming convention.

Does the R5F523E6SDFL#30 support simultaneous 50 Hz and 60 Hz line-frequency rejection?

Yes, the R5F523E6SDFL#30 supports simultaneous 50 Hz and 60 Hz rejection in its DSAD0 unit when configured for output data rates of 10 SPS or 54 SPS. This is achieved through fixed sinc⁴ filter characteristics and is explicitly documented in the datasheet (R01DS0330EJ0130, Page 4). No firmware tuning is required - the feature is hardware-enabled and deterministic.

What is the maximum effective resolution achievable with the R5F523E6SDFL#30's DSAD0 at 7.6 SPS?

At 7.6 SPS and gain = 1, the R5F523E6SDFL#30 achieves up to 23-bit effective resolution (ENOB) in its DSAD0 unit, as confirmed in the datasheet (R01DS0330EJ0130, Page 1). This value accounts for noise, distortion, and nonlinearity under specified conditions and is measured with internal reference and proper decoupling - no external components are needed to reach this specification.

Can the R5F523E6SDFL#30 operate from a 1.8 V supply?

Yes, the R5F523E6SDFL#30 supports operation from 1.8 V to 5.5 V. At 1.8–2.4 V, maximum CPU frequency is 8 MHz; at 2.4–2.7 V, it rises to 16 MHz; and at 2.7–5.5 V, full 32 MHz operation is guaranteed. All analog functions - including DSAD0, PGA, and excitation sources - remain fully specified across this entire voltage range, enabling flexible power architecture design.

How does the R5F523E6SDFL#30 support IEC60730 compliance for Class B applications?

The R5F523E6SDFL#30 provides hardware-assisted self-test features required for IEC60730 Class B, including DSAD disconnect detection, IWDT clock accuracy verification via CAC, RAM test assistance using DOC, and analog input fault detection. These are not software libraries - they are dedicated circuits activated via register writes, reducing certification effort and runtime overhead compared to purely firmware-based approaches.