Renesas R5F523E6SDNF#40

Overview

R5F523E6SDNF#40 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial sensor measurement, 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 excitation current sources (50–1000 µA) - all in a 40-pin HWQFN package operating from –40°C to +85°C.

For engineers reviewing the R5F523E6SDNF#40 datasheet, R5F523E6SDNF#40 pinout, R5F523E6SDNF#40 application, or R5F523E6SDNF#40 equivalent, this device targets thermocouple and RTD-based temperature monitoring systems requiring simultaneous high-resolution analog acquisition, on-chip signal conditioning, and CAN/SCI communication under industrial supply and thermal constraints.

Technical Context

The R5F523E6SDNF#40 implements a dedicated analog front-end architecture with two independent delta-sigma modulators (DSAD0 only active), fourth-order sinc filtering, offset/gain calibration per channel, and synchronized start capability. Its 32 MHz RXv2 CPU executes floating-point (IEEE754) and DSP instructions while managing ELC-triggered conversions and background data flash operations.

Hardware peripherals include one CAN channel (ISO11898-1, up to 1 Mbps), two SCI interfaces (SCI1, SCI5), one I2C bus interface, one RSPI, six MTU2a timer channels, and a low-power timer (LPT) that operates during software standby - all coordinated via the Event Link Controller to minimize CPU wakeups.

Key Specifications

Pinout & Package

PWQN0040KD-A is a 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Renesas R01DS0330EJ0130 Rev.1.30, Table 1.4 and Figure 1.5. Key analog pins include REF0P/REF0N, AIN0–AIN9, REFOUT, IEXC0–IEXC3, and LSW; digital I/O includes PB0/PB1, PC4–PC5, PH0–PH1, P14–P17, P26–P27, P30–P31, and P35–P37.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6ADNF#20, R5F523E6SDNF#40 reduces analog channel count and eliminates one DSAD unit to lower cost and power, while retaining full signal-chain integrity for single-sensor applications; versus ADS131M04IPBSR, it integrates processing, timing, and excitation - eliminating BOM components and PCB area.

Availability

R5F523E6SDNF#40 is available at Aetrix Electronics and suitable for industrial temperature monitoring, RTD transmitter design, and precision load cell interface applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for R5F523E6SDNF#40 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#40 - was designed specifically for high-accuracy sensor signal acquisition in industrial automation, featuring integrated delta-sigma ADCs, PGAs, excitation sources, and functional safety assist features aligned with IEC60730.

FAQ

What is the maximum operating frequency and core type of the R5F523E6SDNF#40?

The R5F523E6SDNF#40 features a 32-bit RXv2 CPU core with a maximum operating frequency of 32 MHz, delivering 64 DMIPS performance. It includes an IEEE754-compliant single-precision FPU, memory protection unit (MPU), and 5-stage pipeline - enabling deterministic real-time execution for sensor fusion and control algorithms within the R5F523E6SDNF#40.

How many delta-sigma ADC units does the R5F523E6SDNF#40 support, and what is its effective resolution?

The R5F523E6SDNF#40 includes one active 24-bit delta-sigma ADC unit (DSAD0) with up to 23-bit effective resolution at 7.6 SPS (gain = 1). It supports sixth-order sinc filtering, simultaneous 50/60 Hz rejection, and per-channel offset/gain calibration - all implemented in hardware to ensure consistent precision without CPU overhead in the R5F523E6SDNF#40.

Does the R5F523E6SDNF#40 include integrated excitation current sources, and what are their specifications?

Yes, the R5F523E6SDNF#40 integrates four programmable excitation current sources (IEXC0–IEXC3) with selectable output levels from 50 µA to 1000 µA. These sources exhibit ±0.2% current matching and 5 ppm/°C drift - critical for accurate 3- or 4-wire RTD measurements - and are fully controllable via the analog multiplexer and low-side switch (LSW) in the R5F523E6SDNF#40.

What communication interfaces are available on the R5F523E6SDNF#40, and which ones support industrial protocols?

The R5F523E6SDNF#40 provides one CAN 2.0B module (ISO11898-1 compliant, up to 1 Mbps), two SCI interfaces (SCI1 and SCI5), one I2C bus interface (400 kbps), and one RSPI (16 Mbps). CAN and SCI support standard industrial protocols including Modbus RTU and custom command sets - making the R5F523E6SDNF#40 suitable for fieldbus-connected sensor nodes.

What is the package type and thermal specification of the R5F523E6SDNF#40?

The R5F523E6SDNF#40 is housed in a PWQN0040KD-A 40-pin HWQFN package (6 × 6 mm, 0.5 mm pitch) with exposed thermal pad. It is rated for operation from –40°C to +85°C (D-grade), meeting industrial ambient requirements. The package supports reflow soldering per JEDEC J-STD-020 and provides robust thermal dissipation for continuous analog acquisition in the R5F523E6SDNF#40.