Renesas R5F523E5BGFM#30

Overview

R5F523E5BGFM#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensing applications. It integrates a 24-bit delta-sigma A/D converter with 125 kSPS max sampling rate, ±10-V input capability via HVAIN pins, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), and on-chip excitation current sources (50–1000 µA). Operating at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, it targets load cell, pressure transducer, and weigh scale front-end systems.

For engineers reviewing the R5F523E5BGFM#30 datasheet, R5F523E5BGFM#30 pinout, R5F523E5BGFM#30 application, or R5F523E5BGFM#30 equivalent, key selection criteria include its 64-pin LFQFP package, –40°C to +105°C G-version temperature rating, 125 kSPS delta-sigma ADC performance, ±10-V analog input support, and integrated PGA with <11 nV/√Hz noise floor at gain=128.

Technical Context

The R5F523E5BGFM#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination. Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), featuring fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection, and offset/gain calibration.

Power management includes three low-power modes (sleep, deep sleep, software standby), low-power timer (LPT) running off sub-clock during standby, and voltage detection circuits (LVDAb) with 14-level programmable thresholds. Clock generation supports main oscillator (1–20 MHz), PLL (4–8 MHz input), and dedicated IWDT oscillator (15 kHz).

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin Low-profile Quad Flat Package, 10 mm × 10 mm body, 0.5 mm lead pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5BGFM#30, R5F523E5KDFM#30 offers identical analog performance in a lower-cost industrial-grade variant, while ADS125H02IRHBT delivers higher standalone ADC specs but requires external processing - making R5F523E5BGFM#30 optimal for integrated, temperature-robust sensor nodes where firmware-defined signal conditioning is essential.

Availability

R5F523E5BGFM#30 is available at Aetrix Electronics and suitable for industrial sensor modules, weigh scale controllers, and pressure transmitter designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5BGFM#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 R5F523E5BGFM#30, was designed specifically for high-accuracy sensor signal acquisition in industrial automation - integrating precision analog front-ends with robust MCU resources to replace multi-chip sensor interface solutions.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BGFM#30?

The R5F523E5BGFM#30 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower data rates (e.g., 10 SPS), simultaneous 50/60 Hz rejection is enabled - a key capability for AC-line-noise immunity in industrial environments. The R5F523E5BGFM#30 datasheet specifies this performance under AVCC0 = 4.5–5.5 V and PCLKC ≤ 16 MHz conditions.

Does R5F523E5BGFM#30 support ±10-V analog inputs, and which pins are used?

Yes, R5F523E5BGFM#30 supports ±10-V analog inputs via four dedicated HVAIN pins (HVAIN0–HVAIN3), as confirmed in the pin function table and electrical characteristics section of the R01DS0402EJ0100 datasheet. These pins are rated for ±10-V absolute maximum input and connect directly to the 24-bit delta-sigma ADC's analog multiplexer. This eliminates external level-shifting circuitry when interfacing with full-bridge load cells or other high-output sensors - a defining feature of the "K" and "L" variants in the RX23E-B family, including R5F523E5BGFM#30.

What is the operating temperature range specified for R5F523E5BGFM#30?

R5F523E5BGFM#30 is a G-version device rated for an operating ambient temperature range of –40°C to +105°C. This extended industrial grade is explicitly defined in Table 1.3 (List of Products) and Figure 1.1 (Part Number Decoding) of the R01DS0402EJ0100 datasheet, where the "G" suffix denotes the +105°C maximum junction temperature qualification. It is suitable for deployment in harsh environments such as motor control cabinets, outdoor instrumentation, and engine bay-adjacent sensor nodes where thermal margins exceed standard industrial limits.

How many excitation current sources does R5F523E5BGFM#30 integrate, and what are their key specifications?

R5F523E5BGFM#30 integrates two fully matched excitation current sources (IEXC0 and IEXC1), each programmable from 50 µA to 1000 µA in six discrete steps. Key specifications include ±0.2% current matching between channels and 5 ppm/°C drift matching - critical for ratiometric bridge measurements where excitation stability directly impacts measurement accuracy. These sources are internally connected to the analog multiplexer and support disconnect detection, as documented in the Analog Front End (AFEA) section of the R01DS0402EJ0100 datasheet for R5F523E5BGFM#30.

Is the R5F523E5BGFM#30 pin-compatible with other members of the RX23E-B family in the same 64-pin LFQFP package?

Yes, all RX23E-B devices in the PLQP0064KB-C package - including R5F523E5BGFM#30, R5F523E5BDFM#30, and R5F523E5KDFM#30 - share identical pinouts and footprint. This allows hardware design reuse across temperature grades (G vs. D) and analog input ranges (±10 V vs. ±5 V), provided firmware accounts for differences in ADC configuration, voltage detector settings, and optional features like LCD driver presence. Pin compatibility is verified in Table 1.2 (Comparison of Functions) and Figure 1.1 of the R01DS0402EJ0100 datasheet for R5F523E5BGFM#30.