Renesas R5F523E5LGBS#00

Overview

R5F523E5LGBS#00 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 128-KB on-chip flash, 16-KB SRAM, 8-KB data flash, and a 24-bit delta-sigma A/D converter with ±10-V input capability, 125-kSPS max sampling rate, and rail-to-rail programmable gain instrumentation amplifier (PGA) - deployed in smart sensor nodes, weigh scales, and process transmitters.

For engineers reviewing the R5F523E5LGBS#00 datasheet, R5F523E5LGBS#00 pinout, R5F523E5LGBS#00 application, or R5F523E5LGBS#00 equivalent, key selection criteria include its G-grade (–40°C to +105°C) operation, TFBGA-100 package with 5.5 × 5.5 mm footprint, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and CAN 2.0B compliance at up to 1 Mbps.

Technical Context

The R5F523E5LGBS#00 integrates a 32-bit RXv2 CPU with IEEE 754-compliant FPU and DSP extensions, operating at up to 32 MHz (64 DMIPS), with memory protection unit (MPU), on-chip debugging (FINE interface), and event link controller (ELC) enabling interrupt-free peripheral coordination. Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL, and dedicated IWDT oscillator.

It combines dual A/D subsystems: a 24-bit delta-sigma converter (DSADB) with fourth/fifth-order sinc filtering, offset/gain calibration, and ±10-V HVAIN inputs; plus an 8-channel 12-bit SAR ADC (S12ADE) with 1.4-µs conversion time. Analog front-end includes two excitation current sources (±0.2% matching), bias voltage generator, and voltage detector for DSAD reference and input fault monitoring.

Key Specifications

Pinout & Package

Package: PTBG0100KD-A - 100-pin TFBGA, 5.5 × 5.5 mm, 0.5 mm pitch, 0.7 mm height, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5LGBS#00, R5F523E5LDFP#00 trades thermal density and board space for assembly simplicity, while R5F523E6LGBS#00 extends memory capacity without altering analog precision or timing behavior - enabling scalable firmware development across product tiers.

Availability

R5F523E5LGBS#00 is available at Aetrix Electronics and suitable for industrial automation, smart sensor manufacturing, and energy metering applications requiring stable component supply, long-term lifecycle assurance, and G-grade thermal reliability.

Supply support for R5F523E5LGBS#00 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 measurement systems, integrating precision analog front-ends with robust real-time MCUs to replace multi-chip sensor signal chains in demanding industrial environments.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5LGBS#00?

The R5F523E5LGBS#00 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma A/D converter (DSADB) when operating with a 4-MHz modulator clock. This rate is achievable with reduced sinc filter order and is validated for use with the ±10-V HVAIN inputs and rail-to-rail PGA. Lower rates (e.g., 10 or 54 SPS) enable simultaneous 50/60 Hz rejection for energy metering applications.

Does R5F523E5LGBS#00 support CAN FD or only classical CAN 2.0B?

R5F523E5LGBS#00 implements the RSCAN module compliant with ISO 11898-1 for classical CAN 2.0B only - supporting standard and extended frames at up to 1 Mbps. It does not support CAN FD data rates, bit-rate switching, or enhanced payload length. For CAN FD requirements, designers must select a different RX family member such as the RX72M or RX66T series.

What are the voltage requirements for AVCC0 and VCC when using the 12-bit SAR ADC (S12ADE) in R5F523E5LGBS#00?

When operating the 12-bit A/D converter (S12ADE), R5F523E5LGBS#00 requires AVCC0 = 4.5–5.5 V for full 12-bit accuracy and 1.4-µs conversion time. However, if only the S12ADE is active and no other analog blocks (e.g., DSADB or PGA) are used, AVCC0 may be supplied from 1.8–5.5 V - though resolution and speed degrade below 4.5 V. VCC remains 1.8–5.5 V regardless.

Can R5F523E5LGBS#00 perform simultaneous sampling across multiple delta-sigma ADC channels?

R5F523E5LGBS#00 does not support true simultaneous sampling across all eight DSADB channels. It uses a single modulator and sequential channel scanning via the analog multiplexer (AMUX). However, it achieves deterministic, low-jitter sampling through ELC-triggered conversions and supports synchronized start across groups using software or timer triggers - sufficient for most industrial sensor applications with <10 µs inter-channel skew.

Is the 2.5-V internal voltage reference in R5F523E5LGBS#00 buffered and capable of driving external circuitry?

Yes, the internal 2.5-V voltage reference (VREF) in R5F523E5LGBS#00 is actively buffered and rated for ±10 mA output current. It exhibits 8 ppm/°C drift over –40°C to +85°C and can directly drive external precision op-amps, DAC references, or sensor excitation circuits without additional buffering - simplifying designs requiring stable analog biasing across multiple subsystems.