Renesas R5F523E6KGFM#10

Overview

R5F523E6KGFM#10 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 ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 256 KB on-chip flash, 32 KB SRAM, and CAN 2.0B interface - all operating at up to 32 MHz. Target use includes load cell signal conditioning, precision weight scales, and industrial process transmitters.

For engineers reviewing the R5F523E6KGFM#10 datasheet, R5F523E6KGFM#10 pinout, R5F523E6KGFM#10 application, or R5F523E6KGFM#10 equivalent, key selection criteria include its 10-V analog input range, 125 kSPS delta-sigma sampling rate, integrated excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and support for IEC60730 functional safety diagnostics.

Technical Context

The R5F523E6KGFM#10 implements the RXv2 CPU core with IEEE 754-compliant 32-bit floating-point unit and DSP-enhanced instruction set, enabling real-time sensor linearization and digital filtering. Its analog subsystem centers on the DSADB module synchronized to PCLKC (up to 16 MHz), with configurable sinc filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Power management includes three low-power modes (sleep, deep sleep, software standby), a low-power timer (LPT) running off sub-clock or IWDT oscillator, and voltage detection circuits (LVDAb) with 14-level programmable thresholds. The ELC enables event-triggered peripheral operation without CPU wake-up, critical for deterministic timing in sensor acquisition sequences.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch, exposed pad for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6JGFN and ADUCM360BCPZ, the R5F523E6KGFM#10 uniquely combines ±10-V direct sensor interfacing, on-chip CAN 2.0B, matched excitation sources, and IEC60730 diagnostics in a compact 64-pin package - reducing BOM count and layout complexity for certified industrial transmitters.

Availability

R5F523E6KGFM#10 is available at Aetrix Electronics and suitable for industrial weight scales, process pressure transmitters, energy meter sensor hubs, and motor control current monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6KGFM#10 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 automotive, industrial, and IoT markets.

The RX23E-B Group - including the R5F523E6KGFM#10 - was designed specifically for high-accuracy industrial sensing applications requiring integrated 24-bit delta-sigma ADCs, programmable gain amplifiers, excitation sources, and functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6KGFM#10?

The R5F523E6KGFM#10 supports a maximum delta-sigma ADC sampling rate of 125 kSPS at 24-bit resolution. This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter configuration. At lower data rates (e.g., 10 or 54 SPS), the device provides simultaneous 50 Hz/60 Hz rejection for AC line noise suppression - a key capability for industrial sensor applications where mains interference is prevalent. The R5F523E6KGFM#10's DSADB module allows flexible trade-offs between speed, resolution, and noise rejection.

Does R5F523E6KGFM#10 support IEC60730 Class B compliance out of the box?

Yes, the R5F523E6KGFM#10 includes hardware-assisted self-diagnostic functions explicitly aligned with IEC60730-1 Annex H requirements. These include ADC self-test, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) diagnostics, RAM test assistance via the Data Operation Circuit (DOC), and analog input disconnect detection. While full certification requires system-level validation, the R5F523E6KGFM#10 provides the foundational hardware features needed to streamline Class B qualification for industrial appliances and safety-related equipment.

What analog input voltage range does R5F523E6KGFM#10 support, and how is it implemented?

The R5F523E6KGFM#10 supports a ±10-V analog input range via dedicated HVAIN0–HVAIN3 pins - a feature confirmed in Table 1.3 and Figure 1.1 of the datasheet (R01DS0402EJ0100). This high-voltage capability is enabled by internal level-shifting circuitry and robust ESD protection, allowing direct connection to unconditioned load cell or pressure sensor outputs without external op-amp stages. The "K" suffix in R5F523E6KGFM#10 explicitly denotes the 10-V input range variant, distinguishing it from 5-V-only variants like "B" or "M".

Can R5F523E6KGFM#10 operate in extended temperature environments?

Yes, the R5F523E6KGFM#10 is a G-version device rated for operation from –40°C to +105°C ambient temperature. This extended range is validated across all core peripherals, including the 24-bit delta-sigma ADC, PGA, voltage reference (2.5 V, 8 ppm/°C), and excitation current sources (50–1000 µA, 5 ppm/°C drift). The specification is documented in Table 1.3 and Section 1.2 of the datasheet, making the R5F523E6KGFM#10 suitable for under-hood automotive modules, industrial motor drives, and outdoor utility metering applications.

What package type and pin count does R5F523E6KGFM#10 use?

The R5F523E6KGFM#10 uses the PLQP0064KB-C package: a 64-pin Low-Profile Quad Flat Package with 10 × 10 mm body size, 0.5 mm pin pitch, and exposed thermal pad. This package is confirmed in Table 1.3 (List of Products) and Figure 1.1 (Part Number Decoding), where "FM" indicates 64-pin LFQFP. The R5F523E6KGFM#10 has 30 general-purpose I/O pins, 2 excitation current outputs (IEXC0/IEXC1), 4 high-voltage analog inputs (HVAIN0–HVAIN3), and dedicated CAN, SCI, and RSPI interface pins - all physically realized within this 64-pin footprint.