Renesas R5F523E5SDNF#20

Overview

R5F523E5SDNF#20 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision analog measurement in industrial temperature sensing systems, featuring one 24-bit delta-sigma ADC (DSAD), a 12-bit SAR ADC (S12AD), 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 up to 32 MHz, supports –40°C to +85°C ambient, and is housed in a 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch).

For engineers reviewing the R5F523E5SDNF#20 datasheet, R5F523E5SDNF#20 pinout, R5F523E5SDNF#20 application, or R5F523E5SDNF#20 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in thermocouple/RTD systems, and confirmed alternative options - all grounded in Renesas' official R01DS0330EJ0130 Rev.1.30 documentation.

Technical Context

The R5F523E5SDNF#20 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 (DSAD0/DSAD1), each with fourth-order sinc filtering, simultaneous 50/60 Hz rejection, and offset/gain calibration - but only DSAD0 is enabled per the "S" suffix (single-unit configuration).

Digital peripherals include one CAN 2.0B channel (up to 1 Mbps), three SCIg interfaces (asynchronous/clock-sync/I²C/SPI modes), one RIIC I²C bus interface (400 kbps), one RSPI (16 Mbps), six MTU2a timer channels, and ELC-driven event-triggered conversion start - all synchronized to PCLKB at up to 32 MHz, while ADCLK for S12AD runs at 32 MHz.

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 R5F523E5ADNF#20 and R5F523E5SGNF#20, the R5F523E5SDNF#20 offers optimal cost and power efficiency for single-sensor industrial temperature measurement at standard ambient temperatures, trading dual-ADC capability and extended temperature range for lower BOM cost and reduced thermal design complexity.

Availability

R5F523E5SDNF#20 is available at Aetrix Electronics and suitable for industrial temperature transmitters, RTD-based process sensors, and thermocouple measurement modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F523E5SDNF#20 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 R5F523E5SDNF#20, was designed specifically for high-accuracy analog measurement in industrial temperature sensing - integrating precision delta-sigma ADCs, PGAs, excitation sources, and IEC60730 support into a single MCU.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F523E5SDNF#20?

The R5F523E5SDNF#20 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, supporting IEEE 754-compliant single-precision floating-point operations and enhanced DSP instructions including 32-bit multiply-accumulate.

How many delta-sigma ADC units does the R5F523E5SDNF#20 include, and what is their resolution?

The R5F523E5SDNF#20 includes one 24-bit delta-sigma A/D converter (DSAD) unit, as indicated by the "S" in its part number (S = single unit). It achieves up to 23-bit effective resolution at 7.6 SPS with gain = 1, and supports simultaneous 50 Hz/60 Hz rejection, fourth-order sinc filtering, and offset/gain calibration - all confirmed in Renesas R01DS0330EJ0130 Rev.1.30.

Does the R5F523E5SDNF#20 support CAN communication, and what is its compliance level?

Yes, the R5F523E5SDNF#20 integrates one CAN module (RSCAN) compliant with ISO11898-1, supporting both standard and extended frames at data rates up to 1 Mbps. It includes 16 message boxes and is fully compatible with industrial CAN networks - a feature explicitly documented in the peripheral list and block diagram of the R01DS0330EJ0130 datasheet.

What analog reference voltage does the R5F523E5SDNF#20 provide, and how stable is it?

The R5F523E5SDNF#20 provides an internal 2.5 V voltage reference (VREF) with a temperature drift of 10 ppm/°C and ±10 mA output current capability. This reference is used by the 24-bit delta-sigma ADC and is stabilized externally via a 0.47 µF capacitor on the REFOUT pin - specifications directly extracted from Table 1.1 and Figure 1.3 of the official Renesas datasheet.

What package type and pin count does the R5F523E5SDNF#20 use?

The R5F523E5SDNF#20 uses a 40-pin HWQFN package (PWQN0040KD-A), measuring 6 × 6 mm with 0.5 mm pitch and an exposed thermal pad. This matches the "NF" suffix in the part number and is confirmed in Table 1.2 (Comparison of Functions) and Figure 1.5 (Pin Assignments) of the R01DS0330EJ0130 datasheet.