Renesas R5F523E6MDFM#50

Overview

R5F523E6MDFM#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 24-bit delta-sigma ADC with 31.25 kSPS max sampling rate, ±5-V analog input range, 256-KB flash, 32-KB SRAM, integrated excitation current sources (50–1000 µA), and CAN 2.0B interface. It operates at up to 32 MHz across –40°C to +85°C and targets load cell, pressure sensor, and weigh scale front-end applications.

For engineers reviewing the R5F523E6MDFM#50 datasheet, R5F523E6MDFM#50 pinout, R5F523E6MDFM#50 application, or R5F523E6MDFM#50 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC performance, 5-V analog input capability, absence of LCD driver, 64-pin LFQFP package, and support for IEC60730-compliant self-diagnostic functions in safety-critical measurement systems.

Technical Context

The R5F523E6MDFM#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @32 MHz, and memory protection unit (MPU) for deterministic real-time control. Its analog subsystem integrates a rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), 2.5-V low-drift voltage reference (8 ppm/°C), and dual excitation current sources with ±0.2% matching-enabling direct bridge sensor interfacing without external signal conditioning.

Digital integration includes one CAN channel (ISO 11898-1, up to 1 Mbps), six SCI channels, one RSPI, one I²C, four DMA channels, and Event Link Controller (ELC) for interrupt-free peripheral coordination. The device supports three low-power modes and uses dedicated clocks for DSAD (PCLKC ≤16 MHz) and S12AD (PCLKD ≤32 MHz) to maintain timing isolation between precision analog and general-purpose conversion paths.

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 microcontroller applications.

Compared with R5F523E5MDFM#50, the R5F523E6MDFM#50 provides double flash/RAM for advanced calibration tables and firmware updates; versus R5F523E6KDFM#50, it trades ±10-V input capability for lower noise floor and tighter drift specs optimized for ±5-V industrial sensors.

Availability

R5F523E6MDFM#50 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, temperature monitoring systems, and energy metering front ends requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F523E6MDFM#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 R5F523E6MDFM#50-is designed specifically for high-accuracy sensor signal acquisition in industrial measurement equipment, integrating metrology-grade analog peripherals with real-time MCU capabilities and functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6MDFM#50?

The R5F523E6MDFM#50 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS. This rate is achieved with a 4 MHz modulator clock and fourth-order sinc filtering. At lower data rates (e.g., 10 or 54 SPS), the device provides simultaneous 50 Hz/60 Hz line frequency rejection-critical for noise-immune industrial measurements. The R5F523E6MDFM#50 does not support the 125 kSPS mode found in 'B' or 'L' variants.

Does R5F523E6MDFM#50 include an LCD controller/driver?

No, the R5F523E6MDFM#50 does not include an LCD controller/driver. Per Renesas part numbering (Figure 1.1), the 'M' suffix explicitly denotes "LCD driver not included." This distinguishes it from 'J' (5-V, LCD included) and 'L' (10-V, LCD included) variants. The R5F523E6MDFM#50 is optimized for compact sensor nodes where display functionality is handled externally or omitted entirely.

What analog input voltage range is supported by R5F523E6MDFM#50?

The R5F523E6MDFM#50 supports a maximum analog input range of ±5 V on its HVAIN pins. This is confirmed by Table 1.3 (List of Products), which lists "5 V" under "Analog Input Range (max.)" for all 'M' suffix parts including R5F523E6MDFM#50. While the device has ±10-V capable pins (HVAIN), the 'M' variant's internal PGA and reference configuration are calibrated for ±5-V operation-not ±10-V.

Which package type and pin count does R5F523E6MDFM#50 use?

The R5F523E6MDFM#50 uses the PLQP0064KB-C package: a 64-pin Low-profile Quad Flat Package with 10 mm × 10 mm body size and 0.5 mm lead pitch. This is unambiguously indicated by the 'FM' substring in the part number (per Figure 1.1: FM = LFQFP/64/0.50) and verified in Table 1.3, where R5F523E6MDFM is listed with package "PLQP0064KB-C".

Does R5F523E6MDFM#50 support IEC60730 compliance features?

Yes, the R5F523E6MDFM#50 includes hardware-assisted IEC60730 compliance features: self-diagnostic functions for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance via the Data Operation Circuit (DOC), and analog input disconnect detection. These features are documented in the "Useful functions for IEC60730 compliance" section of the datasheet and apply to all RX23E-B Group devices, including R5F523E6MDFM#50.