Renesas R5F523E6KDFM#50

Overview

R5F523E6KDFM#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor interfaces and metering systems. 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. Its low-drift voltage reference (2.5 V, 8 ppm/°C) and excitation current sources (50–1000 µA) support strain gauge, RTD, and load cell signal conditioning.

For engineers reviewing the R5F523E6KDFM#50 datasheet, R5F523E6KDFM#50 pinout, R5F523E6KDFM#50 application, or R5F523E6KDFM#50 equivalent, key selection criteria include its 10-V analog input range, 125 kSPS delta-sigma sampling rate, 64-pin LFQFP package (PLQP0064KB-C), -40°C to +85°C temperature grade, and absence of LCD controller - distinguishing it from L/J-series variants.

Technical Context

The R5F523E6KDFM#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and memory protection unit (MPU). Its analog subsystem centers on the DSADB module: a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and ±10-V HVAIN pins enabled via internal low-side switch (10 Ω).

Digital integration includes one CAN channel (ISO 11898-1, up to 1 Mbps), six SCI channels (asynchronous/clock-sync/smart card), one I²C (400 kbps), one RSPI (16 Mbps), and ELC-driven event-triggered operation - enabling deterministic low-power sensor acquisition without CPU wake-up. Clock management supports PLL, sub-clock (32.768 kHz), and CAC-based accuracy monitoring.

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, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6BDFM#50, R5F523E6KDFM#50 enables direct ±10-V sensor interfacing without external signal conditioning, while versus R5F523E6JDFM#50 it removes LCD driver overhead to reduce EMI and power consumption in headless industrial nodes.

Availability

R5F523E6KDFM#50 is available at Aetrix Electronics and suitable for industrial flow metering, strain gauge load cell interfaces, energy metering subsystems, and high-precision temperature transmitters requiring stable component supply across extended product lifecycles.

Supply support for R5F523E6KDFM#50 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 - including R5F523E6KDFM#50 - was designed specifically for high-accuracy sensor signal acquisition in industrial automation, smart metering, and test equipment, integrating metrology-grade analog peripherals with real-time MCU capabilities.

FAQ

What is the maximum analog input voltage range supported by the R5F523E6KDFM#50?

The R5F523E6KDFM#50 supports a ±10-V input range on its HVAIN0–HVAIN3 pins, enabled by dedicated high-voltage analog input circuitry and internal low-side switches. This allows direct connection to industrial sensors such as 10-V-output strain gauges or pressure transducers without external attenuation or level-shifting stages. The specification is confirmed in Table 1.3 and Section 1.4 of the R01DS0402EJ0100 datasheet.

Does the R5F523E6KDFM#50 include an LCD controller?

No, the R5F523E6KDFM#50 does not include an LCD controller. Its part number suffix "K" explicitly denotes the absence of LCD functionality (per Figure 1.1), unlike "J" or "L" variants which integrate LCD drivers (e.g., 36 SEG × 8 COM). This omission reduces power consumption and EMI in headless sensor interface applications where local display is unnecessary.

What is the guaranteed operating temperature range for the R5F523E6KDFM#50?

The R5F523E6KDFM#50 is rated for industrial operation from –40°C to +85°C, indicated by the "D" in its part number (R5F523E6KDFM#50). This temperature grade is validated across all specified electrical characteristics, including ADC accuracy, PGA drift, and flash endurance, ensuring reliability in factory-floor and outdoor metering environments.

How many excitation current sources does the R5F523E6KDFM#50 provide, and what are their key specifications?

The R5F523E6KDFM#50 provides two independent 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 precision RTD and bridge measurements. These sources are documented in the AFEA section (Page 5) and Table 1.1 of the R01DS0402EJ0100 datasheet.

Is the R5F523E6KDFM#50 pin-compatible with other members of the RX23E-B Group?

The R5F523E6KDFM#50 shares the same 64-pin LFQFP (PLQP0064KB-C) package and pinout with other RX23E-B 64-pin variants (e.g., R5F523E6BDFM#50, R5F523E6MDFM#50), enabling hardware reuse across designs with different analog input ranges or sampling rates. Pin compatibility is confirmed in Table 1.4 (Pin Functions) and Figure 1.1 of the official Renesas datasheet R01DS0402EJ0100.