Renesas R5F523E5LGFP#30

Overview

R5F523E5LGFP#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing systems. It integrates a 24-bit delta-sigma ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and a low-drift 2.5-V voltage reference (8 ppm/°C). Operating at up to 32 MHz, it delivers 64 DMIPS and supports IEC60730-compliant diagnostics for safety-critical applications such as load cell interfaces and precision weigh scales.

For engineers reviewing the R5F523E5LGFP#30 datasheet, R5F523E5LGFP#30 pinout, R5F523E5LGFP#30 application, or R5F523E5LGFP#30 equivalent, this MCU provides verified 125 kSPS delta-sigma sampling, CAN 2.0B interface (1 Mbps), integrated RTC and LPT for time-stamped measurements, and hardware-accelerated CRC/DOC for sensor data integrity - all in a 100-pin LFQFP package with industrial temperature range (–40°C to +85°C).

Technical Context

The R5F523E5LGFP#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 5-stage CISC Harvard pipeline, and memory protection unit (MPU) - enabling deterministic real-time control of analog front-end signal chains. Its dual A/D subsystem combines a 24-bit delta-sigma converter (DSADB) with configurable sinc filters and a separate 12-bit SAR converter (S12ADE) for fast auxiliary measurements.

Timing and power management are tightly coupled: the DSAD operates synchronously with PCLKC (up to 16 MHz), while the S12AD uses PCLKD (up to 32 MHz); clock domains are independently configurable via PLL, main/sub oscillators, and on-chip high/low-speed RC sources. The ELC enables event-triggered peripheral operation without CPU wake-up, supporting ultra-low-power sensor polling during software standby.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 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 R5F523E5NDFP, the R5F523E5LGFP#30 enables direct ±10-V sensor interfacing without level-shifting, while R5F523E5LGFP#10 offers identical functionality in tape format - making the #30 variant ideal for design validation and low-volume industrial deployment where high-voltage analog integrity is critical.

Availability

R5F523E5LGFP#30 is available at Aetrix Electronics and suitable for industrial weigh scales, strain gauge interfaces, high-accuracy flow meters, and process temperature transmitters requiring stable component supply and long-term manufacturability.

Supply support for R5F523E5LGFP#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 - including the R5F523E5LGFP#30 - was designed specifically for high-precision sensor signal conditioning in industrial measurement equipment, integrating metrology-grade analog peripherals with functional safety features.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in the R5F523E5LGFP#30?

The R5F523E5LGFP#30 supports a maximum delta-sigma sampling rate of 125 kSPS, achievable with reduced effective resolution and appropriate filter configuration. At 3.8 SPS, it achieves 24-bit effective resolution with gain = 1. The device allows programmable data rates from 3.8 SPS to 125 kSPS using a 4-MHz modulator clock, and includes four configurable sinc filter types for noise shaping and line-frequency rejection.

Does the R5F523E5LGFP#30 include a CAN interface, and what protocol versions does it support?

Yes, the R5F523E5LGFP#30 integrates one CAN module (RSCAN) compliant with ISO 11898-1, supporting standard (11-bit) and extended (29-bit) frame formats at bit rates up to 1 Mbps. It includes 16 message boxes with flexible acceptance filtering and supports basic CAN 2.0B functionality - suitable for industrial fieldbus communication in weigh scales and process controllers.

What analog input voltage range does the R5F523E5LGFP#30 support on its HVAIN pins?

The R5F523E5LGFP#30 supports a ±10-V input range on its HVAIN0–HVAIN3 pins, enabling direct connection to high-output bridge sensors without external attenuation or level-shifting circuitry. This specification is confirmed in Table 1.3 of the datasheet and applies specifically to part numbers with "L" suffix (e.g., R5F523E5LGFP#30), distinguishing it from "N" or "M" variants limited to 5-V range.

Can the R5F523E5LGFP#30 operate across the full industrial temperature range?

Yes, the R5F523E5LGFP#30 is rated for operation from –40°C to +85°C (D-version), as explicitly stated in Table 1.3 and Figure 1.1 of the datasheet. This qualification covers all integrated peripherals - including the 24-bit DSAD, 12-bit S12AD, voltage reference (8 ppm/°C drift), and excitation current sources - ensuring stable metrological performance in demanding factory-floor environments.

How many excitation current sources does the R5F523E5LGFP#30 integrate, and what are their key specifications?

The R5F523E5LGFP#30 integrates two fully matched excitation current sources (IEXC0 and IEXC1), each programmable from 50 µA to 1000 µA in discrete steps. They feature ±0.2% current matching and 5 ppm/°C drift matching - critical for accurate 3- or 4-wire RTD measurements. The device also includes hardware-assisted disconnect detection for both sources, enhancing system reliability in process instrumentation.