Renesas R5F523E6BDFM#30

Overview

R5F523E6BDFM#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing, featuring a 24-bit delta-sigma ADC with 125 kSPS max sampling rate, ±5-V analog input range, 256 KB on-chip flash, 32 KB SRAM, and integrated programmable gain instrumentation amplifier (PGA) with gain up to 128. It operates at up to 32 MHz and supports CAN, SCI, I²C, and RSPI interfaces in a 64-pin LFQFP package.

For engineers reviewing the R5F523E6BDFM#30 datasheet, R5F523E6BDFM#30 pinout, R5F523E6BDFM#30 application, or R5F523E6BDFM#30 equivalent, this MCU delivers calibrated high-resolution analog acquisition, real-time control via MTU2a timers, low-power operation down to software standby mode, and IEC60730-compliant self-test functions for safety-critical measurement systems.

Technical Context

The R5F523E6BDFM#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS performance at 32 MHz, and Harvard architecture with 5-stage pipeline. Its analog subsystem centers on an 8-channel 24-bit delta-sigma ADC (DSADB) with fourth- and fifth-order sinc filters, programmable data rates from 3.8 SPS to 125 kSPS, and rail-to-rail PGA supporting ±5-V inputs.

Digital integration includes a 1-channel CAN module compliant with ISO11898-1 (up to 1 Mbps), 6-channel SCIg interface, 1-channel RIIC, 1-channel RSPI, and ELC-driven event-triggered peripheral operation-enabling deterministic timing without CPU intervention during sleep modes.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 mm × 10 mm, 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 acquisition applications.

Compared with R5F523E6JDFN, R5F523E6BDFM#30 saves board space and eliminates LCD driver overhead; compared with R5F523E5BDFM, it provides double flash and SRAM for complex metrology algorithms and field-upgradable firmware.

Availability

R5F523E6BDFM#30 is available at Aetrix Electronics and suitable for industrial weigh scales, energy meters, process controllers, and pressure transmitters requiring stable component supply across multi-year production cycles.

Supply support for R5F523E6BDFM#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, and power solutions for industrial, automotive, and IoT markets.

The RX23E-B Group targets high-accuracy industrial sensing applications, integrating metrology-grade analog front ends with real-time MCU capabilities to replace discrete signal chains in smart sensors and measurement equipment.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BDFM#30?

The R5F523E6BDFM#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable at lower effective resolution; at 3.8 SPS, it delivers 24-bit effective resolution with gain = 1. The device also supports selectable sinc filter configurations (fourth- or fifth-order) to optimize noise rejection versus speed for specific sensor types.

Does R5F523E6BDFM#30 include an integrated voltage reference, and what is its accuracy?

Yes, R5F523E6BDFM#30 includes an on-chip 2.5 V voltage reference with 8 ppm/°C temperature drift over –40°C to +85°C and ±10 mA output capability. This reference is directly usable by the 24-bit delta-sigma ADC and can be routed to external circuitry. Its low drift ensures stable full-scale calibration without requiring external precision references in most industrial applications.

Can R5F523E6BDFM#30 operate with a 5-V analog supply while running the core at 3.3 V?

Yes, R5F523E6BDFM#30 supports independent analog and digital supply domains: AVCC0 accepts 4.5–5.5 V for optimal DSADB performance, while VCC can operate from 1.8–5.5 V. This allows mixed-supply designs - for example, 3.3 V core logic with 5 V analog rails - without level-shifting, preserving ADC SNR and enabling direct interface with 5 V sensors or transducers.

How many excitation current sources does R5F523E6BDFM#30 provide, and what are their key specifications?

R5F523E6BDFM#30 provides two fully programmable excitation current sources (IEXC0 and IEXC1), each configurable from 50 µA to 1000 µA in six discrete steps. They feature ±0.2% current matching and 5 ppm/°C drift matching - critical for ratiometric measurements with RTDs or bridge sensors - and include dedicated disconnect detection to flag open-circuit faults.

Is R5F523E6BDFM#30 supported for IEC60730 functional safety compliance?

Yes, R5F523E6BDFM#30 includes hardware-assisted features for IEC60730 Class B compliance, including RAM test assistance via DOC, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) self-test, ADC input disconnect detection, and voltage detector functions for AVCC0 and DSAD reference monitoring - all documented in Renesas' Functional Safety Manual R01US0402EJ0100.