Renesas R5F523E6BGFM#30

Overview

R5F523E6BGFM#30 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial sensing, featuring a 24-bit delta-sigma A/D converter with 125 kSPS max sampling rate, ±5-V analog input range, 256 KB on-chip flash, 32 KB SRAM, and integrated excitation current sources (50–1000 µA) - deployed in load cell signal conditioning and weigh scale front-ends.

For engineers reviewing the R5F523E6BGFM#30 datasheet, R5F523E6BGFM#30 pinout, R5F523E6BGFM#30 application, or R5F523E6BGFM#30 equivalent, key selection criteria include its 64-pin LFQFP package, 125 kSPS delta-sigma ADC performance at ±5 V full-scale, CAN 2.0B interface compliance, low-drift voltage reference (2.5 V, 8 ppm/°C), and IEC60730 self-diagnostic support for safety-critical measurement systems.

Technical Context

The R5F523E6BGFM#30 implements a Harvard-architecture RXv2 CPU core operating at up to 32 MHz (64 DMIPS), with IEEE 754-compliant single-precision FPU, memory protection unit (MPU), and event-link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep. Its DSAD module uses a 4-MHz modulator clock and supports fourth- and fifth-order sinc filters for simultaneous 50/60 Hz rejection.

It integrates dual A/D subsystems: an 8-channel 24-bit delta-sigma converter (DSADB) with rail-to-rail PGA (gain = 1–128) and offset drift of 4 nV/°C (gain ≥ 64), plus an 8-channel 12-bit SAR converter (S12ADE) with 1.4 µs conversion time. The analog front end includes two programmable excitation current sources (±0.2% matching), ±10-V HVAIN pins (configured for ±5 V in this variant), and low-side switch (10 Ω) for sensor bias control.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision industrial sensing applications.

Compared with R5F523E6BGFM#30, R5F523E5BGFM#30 offers identical analog performance in a lower-cost MCU variant, while ADS131M04IPBSR delivers higher channel density but demands full external system integration - making R5F523E6BGFM#30 optimal for compact, self-contained industrial sensor nodes requiring embedded processing and safety certification.

Availability

R5F523E6BGFM#30 is available at Aetrix Electronics and suitable for industrial weigh scales, motor drive current sensing, smart pressure transmitters, and energy metering sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6BGFM#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 management ICs for industrial, automotive, and IoT applications.

The RX23E-B Group - including R5F523E6BGFM#30 - was designed specifically for high-accuracy sensor signal conditioning in industrial automation, offering integrated delta-sigma ADCs, excitation sources, and IEC60730 safety features in a single chip.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BGFM#30?

The R5F523E6BGFM#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma A/D converter (DSADB) when configured with a 4-MHz modulator clock and appropriate digital filter settings. This rate applies to the ±5-V input range variant (denoted by "B" in the part number), enabling high-speed precision acquisition for dynamic sensor applications such as vibration monitoring and fast-response load cells.

Does R5F523E6BGFM#30 include an integrated voltage reference, and what is its stability?

Yes, R5F523E6BGFM#30 includes an on-chip 2.5 V voltage reference (VREF) with a temperature drift of 8 ppm/°C over the full operating range (–40°C to +105°C). This reference is used by both the 24-bit delta-sigma ADC and the 16-bit D/A converter, ensuring consistent scaling and eliminating the need for external precision references in most industrial sensing designs.

Can R5F523E6BGFM#30 operate in a single 3.3-V supply, and what are the implications for analog performance?

Yes, R5F523E6BGFM#30 operates from a single 1.8-V to 5.5-V supply. At 3.3 V, the maximum CPU frequency is 32 MHz (VCC ≥ 2.7 V), and analog performance remains fully specified: the DSAD maintains 24-bit resolution and 125 kSPS sampling, while the PGA retains its 11 nVRMS noise floor (gain = 128) and 4 nV/°C offset drift. AVCC0 must be supplied at 4.5–5.5 V for full ±5-V analog input range compliance.

How does the Event Link Controller (ELC) enhance deterministic timing in R5F523E6BGFM#30-based systems?

The ELC in R5F523E6BGFM#30 enables hardware-level triggering between peripherals - for example, configuring an MTU2a timer overflow to directly initiate a DSAD conversion without CPU intervention or interrupt latency. This achieves sub-microsecond timing consistency critical for synchronized multi-sensor acquisition, closed-loop control, and IEC60730 diagnostic sequences where jitter must be minimized.

Is R5F523E6BGFM#30 qualified for automotive applications, and what is its temperature rating?

R5F523E6BGFM#30 is rated for industrial operation from –40°C to +105°C (G-version), meeting requirements for under-hood and factory automation environments. While not AEC-Q100 qualified, its extended temperature range, IEC60730 Class B support, and robust ESD/latch-up immunity make it suitable for non-safety-critical automotive subsystems like battery monitoring, cabin sensors, and auxiliary motor controls - pending customer-specific qualification.