Renesas R5F523E6BDFL#30

Overview

R5F523E6BDFL#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing applications. It integrates a 24-bit delta-sigma ADC with 125 kSPS max sampling rate, ±5-V input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 2.5-V low-drift voltage reference (8 ppm/°C). The device operates at up to 32 MHz, includes 256 KB flash, 32 KB SRAM, and supports CAN, SCI, I²C, and RSPI interfaces.

For engineers reviewing the R5F523E6BDFL#30 datasheet, R5F523E6BDFL#30 pinout, R5F523E6BDFL#30 application, or R5F523E6BDFL#30 equivalent, key selection criteria include its 48-pin LFQFP package, 125 kSPS delta-sigma ADC performance, ±5-V analog input capability, integrated PGA and excitation sources for bridge sensor conditioning, and IEC60730-compliant self-test features for functional safety-critical designs.

Technical Context

The R5F523E6BDFL#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and memory protection unit (MPU) for secure embedded execution. Its analog subsystem centers on the DSADB module - a dedicated 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and ±10-V-capable HVAIN pins (configured for ±5 V in this variant).

Clocking is managed via multiple oscillators: main clock (1–20 MHz), sub-clock (32.768 kHz), and dedicated IWDT oscillator. System clocks are domain-separated - ICLK (CPU, up to 32 MHz), PCLKC (DSAD, up to 16 MHz), and PCLKD (S12AD, up to 32 MHz) - enabling precise timing control for mixed-signal operation without CPU intervention via ELC-triggered conversions.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5BDFL#30, the R5F523E6BDFL#30 offers double flash/SRAM for complex algorithms and calibration storage; versus ADUCM3029, it delivers turnkey bridge/RTD support and hardware-accelerated safety compliance - reducing BOM count and certification effort in industrial-grade systems.

Availability

R5F523E6BDFL#30 is available at Aetrix Electronics and suitable for industrial weight scales, smart flow meters, PLC analog input modules, and high-voltage battery monitoring units requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F523E6BDFL#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX23E-B Group is designed specifically for high-accuracy industrial sensing - integrating precision analog front-ends, functional safety features, and real-time processing in a single chip to replace multi-component signal chains.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BDFL#30?

The R5F523E6BDFL#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower data rates (e.g., 10 or 54 SPS), the device provides simultaneous 50 Hz and 60 Hz line-frequency rejection - critical for industrial noise environments. The R5F523E6BDFL#30 maintains full 24-bit effective resolution at 3.8 SPS with gain = 1.

Does R5F523E6BDFL#30 include hardware support for IEC60730 functional safety compliance?

Yes, the R5F523E6BDFL#30 includes dedicated hardware features for IEC60730 Class B compliance, including self-diagnostic assistance for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test support via the data operation circuit (DOC), and analog input disconnect detection. These are documented in the R01DS0402EJ0100 datasheet and enable certified implementations without requiring extensive software overhead. The R5F523E6BDFL#30 leverages these features to reduce validation effort in safety-critical industrial equipment.

What analog input voltage range is supported by R5F523E6BDFL#30 on its HVAIN pins?

The R5F523E6BDFL#30 supports an analog input voltage range of ±5 V on its HVAIN pins, as confirmed by its "B" variant designation in Figure 1.1 of the datasheet (R01DS0402EJ0100). While the DSAD module is capable of ±10-V operation in other variants (e.g., "K" or "L"), the "B" suffix explicitly denotes the ±5-V range. This matches common industrial sensor outputs and eliminates need for external attenuation or level-shifting circuits in many load cell and pressure transducer applications. The R5F523E6BDFL#30 also includes hardware disconnect detection for these inputs.

Can R5F523E6BDFL#30 operate with a single power supply, and what is the valid voltage range?

Yes, the R5F523E6BDFL#30 operates from a single VCC supply ranging from 1.8 V to 5.5 V, with corresponding maximum operating frequencies: 8 MHz (1.8–2.4 V), 16 MHz (2.4–2.7 V), and 32 MHz (2.7–5.5 V). However, AVCC0 must be supplied at 4.5–5.5 V for full performance of the 12-bit S12AD converter; it may operate down to 1.8 V if only the DSAD is used. This dual-supply flexibility allows the R5F523E6BDFL#30 to interface directly with both low-voltage logic and high-precision analog subsystems while maintaining robust operation across wide industrial input ranges.

What communication interfaces are available on R5F523E6BDFL#30, and which support hardware-triggered operation?

The R5F523E6BDFL#30 includes CAN (1 channel, ISO 11898-1), SCI (up to 7 channels), I²C (1 channel, 400 kbps), and RSPI (1 channel, 16 Mbps). All serial interfaces support hardware-triggered operation via the Event Link Controller (ELC), enabling autonomous peripheral interaction - for example, an MTU timer overflow can directly initiate an RSPI transfer or SCI transmission without CPU involvement. This feature is integral to deterministic real-time behavior in the R5F523E6BDFL#30 and reduces interrupt latency in time-critical sensor acquisition loops.