Renesas R5F523E6SDNF#20

Overview

R5F523E6SDNF#20 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial sensor signal conditioning, featuring one 24-bit delta-sigma ADC unit (6-channel differential), a 12-bit SAR ADC (4 channels), rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 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 on 1.8–5.5 V supply and supports IEC60730-compliant diagnostics.

For engineers reviewing the R5F523E6SDNF#20 datasheet, R5F523E6SDNF#20 pinout, R5F523E6SDNF#20 application, or R5F523E6SDNF#20 equivalent, this device is selected for thermocouple/RTD measurement systems requiring simultaneous high-resolution analog acquisition, on-chip calibration, low-power standby operation with LPT, and CAN bus connectivity in compact 40-pin HWQFN packaging.

Technical Context

The R5F523E6SDNF#20 implements a CISC Harvard architecture with 5-stage pipeline and variable-length instructions, delivering 64 DMIPS at 32 MHz. Its analog subsystem integrates two independent delta-sigma modulators with fourth-order sinc filters, offset/gain calibration, and synchronized start triggers-enabling precise multi-sensor acquisition without CPU intervention via ELC.

Digital peripherals include a single CAN 2.0B channel (1 Mbps), two SCI interfaces (SCI1/SCI5), one I²C (400 kbps), one RSPI (16 Mbps), four-channel DMAC, and event-driven operation across MTU2a, CMT, and TMR timers-all synchronized to configurable PCLK domains (PCLKA/B/D) while the CPU runs on ICLK at 32 MHz.

Key Specifications

Pinout & Package

PWQN0040KD-A: 40-pin HWQFN, 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad. Pin functions validated per Renesas R01DS0330EJ0130 Rev.1.30 datasheet Figures 1.5 and Table 1.4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6ADNF#20, R5F523E6SDNF#20 reduces pin count and cost for single-sensor applications while retaining identical MCU performance, memory, and diagnostic features; versus ADS1220IPWR, it delivers full embedded control capability without requiring external processor coordination or additional analog support circuitry.

Availability

R5F523E6SDNF#20 is available at Aetrix Electronics and suitable for industrial temperature transmitters, high-accuracy weigh scale controllers, and smart pressure transmitters requiring stable component supply, long-lifecycle assurance, and traceable sourcing.

Supply support for R5F523E6SDNF#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 markets.

The RX23E-A Group, including R5F523E6SDNF#20, was designed specifically for high-precision sensor signal conditioning in industrial automation - integrating metrology-grade analog front ends with robust real-time control capabilities.

FAQ

What is the maximum operating frequency and core type of the R5F523E6SDNF#20?

The R5F523E6SDNF#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 5-stage pipeline and variable-length instructions, enabling efficient code density and deterministic real-time response for sensor processing tasks.

How many delta-sigma ADC units does the R5F523E6SDNF#20 include, and what is its effective resolution?

The R5F523E6SDNF#20 includes one 24-bit delta-sigma ADC unit supporting up to six differential inputs. At 7.6 SPS output data rate with gain = 1, it achieves up to 23-bit effective resolution. Its fourth-order sinc filter and simultaneous 50/60 Hz rejection ensure high fidelity in electrically noisy industrial settings.

Does the R5F523E6SDNF#20 support IEC60730 compliance, and which diagnostic features are integrated?

Yes, the R5F523E6SDNF#20 includes hardware-assisted IEC60730 Class B compliance features: A/D converter self-diagnostic and disconnect detection, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance via DOC, and voltage detector (VDET) for analog supply monitoring - reducing certification overhead for safety-critical equipment.

What package type and pin count does the R5F523E6SDNF#20 use, and what are its thermal characteristics?

The R5F523E6SDNF#20 uses the PWQN0040KD-A package: a 40-pin HWQFN with 6 × 6 mm body, 0.5 mm pitch, and exposed thermal pad. It is rated for –40°C to +85°C ambient operation (D version), making it suitable for industrial enclosures with moderate thermal management requirements.

Can the R5F523E6SDNF#20 drive RTD sensors directly, and what excitation current options are available?

Yes, the R5F523E6SDNF#20 integrates four programmable excitation current sources (IEXC0–IEXC3) supporting 50 µA to 1000 µA in discrete steps. Current matching is ±0.2% and drift matching is 5 ppm/°C - enabling accurate 2-, 3-, or 4-wire RTD measurements without external current sources or precision resistors.