Renesas R5F523E5BGFL#30

Overview

R5F523E5BGFL#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog sensing in industrial measurement systems, featuring a 24-bit delta-sigma A/D converter (125 kSPS max), ±10-V input capability via HVAIN pins, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and integrated 16-bit D/A converter. It operates at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, targeting load cell, pressure sensor, and weigh scale front-end applications.

For engineers reviewing the R5F523E5BGFL#30 datasheet, R5F523E5BGFL#30 pinout, R5F523E5BGFL#30 application, or R5F523E5BGFL#30 equivalent, this MCU delivers calibrated high-resolution analog acquisition with built-in diagnostics for IEC60730-compliant safety-critical measurement systems - requiring attention to HVAIN pin routing, DSAD reference voltage selection, PGA gain configuration, and ELC-triggered conversion timing.

Technical Context

The R5F523E5BGFL#30 integrates a dedicated analog subsystem centered on the DSADB 24-bit delta-sigma A/D converter, synchronized to PCLKC (up to 16 MHz), with configurable sinc filters (fourth- or fifth-order), simultaneous 50/60 Hz rejection at 10/54 SPS, and offset/gain error calibration. Its analog front end includes two independent excitation current sources with ±0.2% matching and 5 ppm/°C drift, bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and ±10-V tolerant HVAIN inputs.

Digital execution relies on the RXv2 CPU core (32 MHz, 64 DMIPS), IEEE 754-compliant FPU, memory protection unit (MPU), and event-driven architecture via ELC - enabling low-latency, interrupt-free coordination between MTU2a timers, DSAD conversions, and RSPI/SCI peripherals while the CPU remains in deep sleep mode.

Key Specifications

Pinout & Package

PLQP0048KB-B is a 48-pin Low-Profile Quad Flat Package (LFQFP) with 0.5 mm pitch, 7 × 7 mm body size, and exposed thermal pad. Designed for high-density industrial PCB layouts, it supports reflow soldering and provides 17 general-purpose I/O pins (5-V tolerant), 1 dedicated input pin, 18 pull-up resistors, and 17 open-drain outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5LGFP, R5F523E5BGFL#30 reduces board area by 66% and eliminates LCD driver overhead, while retaining full DSAD functionality; versus R5F523E6BGFL#30, it trades flash/RAM headroom for lower unit cost in resource-constrained embedded sensor nodes.

Availability

R5F523E5BGFL#30 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, energy meter sensor interfaces, and load cell signal conditioners requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5BGFL#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 infrastructure markets.

The RX23E-B Group targets high-accuracy sensor signal acquisition in harsh environments, integrating precision analog front ends with robust real-time MCUs to replace multi-chip measurement subsystems with single-chip solutions.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BGFL#30?

The R5F523E5BGFL#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma A/D converter (DSADB) when configured with fMOD = 4 MHz and appropriate sinc filter settings. At lower data rates (e.g., 10 or 54 SPS), it achieves simultaneous 50 Hz/60 Hz rejection - critical for industrial AC-noise environments. The actual achievable rate depends on selected digital filter order and modulator clock configuration.

Does R5F523E5BGFL#30 support ±10-V analog inputs?

Yes, R5F523E5BGFL#30 supports ±10-V differential analog inputs on its HVAIN0–HVAIN3 pins. This capability is enabled by its high-voltage analog input structure and rail-to-rail programmable gain instrumentation amplifier (PGA), allowing direct interface with unconditioned bridge sensors without external level-shifting or attenuation circuits.

What are the key IEC60730 compliance features built into R5F523E5BGFL#30?

R5F523E5BGFL#30 includes hardware-assisted IEC60730 Class B compliance features: DSAD input disconnect detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and analog input fault detection for reference voltage, excitation current, and HVCOM pins - all designed to simplify functional safety certification.

Can R5F523E5BGFL#30 operate from a single 3.3-V supply?

Yes, R5F523E5BGFL#30 operates from a single 1.8-V to 5.5-V VCC supply. At 3.3 V, it supports full 32-MHz operation. However, the analog domain requires AVCC0 = 4.5–5.5 V for specified 12-bit ADC performance and DSAD reference stability; a separate 5-V analog rail or LDO is recommended for optimal analog accuracy.

What package type and pin count does R5F523E5BGFL#30 use?

R5F523E5BGFL#30 uses the PLQP0048KB-B package: a 48-pin Low-Profile Quad Flat Package (LFQFP) with 7 × 7 mm body size and 0.5 mm pitch. It provides 17 general-purpose I/O pins, 4 high-voltage analog inputs (HVAIN), dual excitation current outputs (IEXC0/IEXC1), and dedicated analog reference and power pins - optimized for compact industrial sensor modules.