Renesas R5F523E5KGFM#10

Overview

R5F523E5KGFM#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), 128 KB on-chip flash, 16 KB SRAM, and a CAN interface compliant to ISO 11898-1 at up to 1 Mbps - all operating at 32 MHz.

For engineers reviewing the R5F523E5KGFM#10 datasheet, R5F523E5KGFM#10 pinout, R5F523E5KGFM#10 application, or R5F523E5KGFM#10 equivalent, this MCU delivers verified 125 kSPS sampling rate, low-drift voltage reference (2.5 V, 8 ppm/°C), excitation current sources (50–1000 µA), and IEC60730-compliant self-diagnostic features for safety-critical sensor front ends.

Technical Context

The R5F523E5KGFM#10 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 5-stage pipeline, and memory protection unit (MPU) - enabling deterministic real-time control of analog acquisition and digital signal processing tasks. Its clock system supports independent domain clocks (ICLK, PCLKA–PCLKD, FCLK) synchronized to distinct peripheral timing requirements.

It embeds dual A/D subsystems: a 24-bit delta-sigma converter (DSADB) with fourth/fifth-order sinc filters and simultaneous 50/60 Hz rejection, plus an 8-channel 12-bit SAR ADC (S12ADE) with 1.4 µs conversion time. The analog front end includes ±10-V HVAIN pins, low-side switch (10 Ω), bias voltage generator, and fault detection for reference voltage, excitation current, and HVCOM disconnect.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (PLQP0064KB-C), 10 × 10 mm body, 0.5 mm pitch, exposed pad (thermal pad not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5KGFM#10, R5F523E5JGFN#10 adds LCD support at the cost of larger package and pin count, while R5F523E6KGFM#10 doubles flash/RAM capacity without altering analog performance or footprint - enabling scalable firmware development within identical hardware constraints.

Availability

R5F523E5KGFM#10 is available at Aetrix Electronics and suitable for industrial sensor transmitters, energy metering modules, and process control I/O systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5KGFM#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 R5F523E5KGFM#10 - was designed specifically for high-accuracy industrial sensing, integrating metrology-grade analog front ends with functional safety features and real-time deterministic processing.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5KGFM#10?

The R5F523E5KGFM#10 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB) when configured with modulator clock fMOD = 4 MHz. At lower data rates (e.g., 3.8 SPS), it achieves 24-bit effective resolution with gain = 1. This specification is confirmed in Table 1.1 and Section 1.4 of the R01DS0402EJ0100 datasheet.

Does R5F523E5KGFM#10 include a CAN interface, and what standard does it comply with?

Yes, R5F523E5KGFM#10 integrates one CAN module (RSCAN) compliant with ISO 11898-1 for standard and extended frame formats, supporting bit rates up to 1 Mbps. It requires an external CAN transceiver for physical layer interfacing. This is documented in the "Communication Functions" section (Page 5) and Table 1.1 of the R01DS0402EJ0100 datasheet.

What analog input voltage range does R5F523E5KGFM#10 support on its HVAIN pins?

R5F523E5KGFM#10 supports ±10 V on its HVAIN0–HVAIN3 pins, as indicated by the "K" suffix in its part number per Figure 1.1 (Page 10). This enables direct connection to high-output bridge sensors without external level-shifting. The specification is explicitly stated in Table 1.3 and reinforced in the DSADB functional description (Page 5).

Is R5F523E5KGFM#10 qualified for extended temperature operation?

Yes, R5F523E5KGFM#10 is a G-version device rated for –40°C to +105°C ambient operation, as confirmed by the "G" in its part number (R5F523E5KGFM#10) and Table 1.3 (Page 9). This makes it suitable for under-hood automotive sensors, industrial drives, and outdoor metering equipment.

What excitation current options are available on R5F523E5KGFM#10 for RTD or bridge sensing?

R5F523E5KGFM#10 provides two programmable excitation current sources (IEXC0 and IEXC1) with selectable outputs of 50 µA, 100 µA, 250 µA, 500 µA, 750 µA, or 1000 µA. Current matching is ±0.2%, and drift matching is 5 ppm/°C - critical for precision 3-/4-wire RTD measurements. This is detailed in the AFEA section (Page 6) and Table 1.1.