Renesas R5F523E5MDFL#50

Overview

R5F523E5MDFL#50 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 31.25 kSPS max sampling rate, ±5-V input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 128 KB flash/16 KB SRAM. It operates at up to 32 MHz across –40°C to +85°C and targets load cell, pressure transducer, and weigh scale signal conditioning.

For engineers reviewing the R5F523E5MDFL#50 datasheet, R5F523E5MDFL#50 pinout, R5F523E5MDFL#50 application, or R5F523E5MDFL#50 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC performance, ±5-V HVAIN input capability, integrated PGA and excitation sources, CAN interface compliance with ISO11898-1, and LFQFP-48 package compatibility with industrial PCB layouts.

Technical Context

The R5F523E5MDFL#50 implements the RXv2 CPU core with 32-bit CISC Harvard architecture, 5-stage pipeline, and IEEE 754-compliant FPU-enabling real-time floating-point math for sensor linearization and compensation. Its analog subsystem centers on the DSADB unit synchronized to PCLKC (≤16 MHz), featuring fourth- to fifth-order sinc digital filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Power management includes three low-power modes (sleep, deep sleep, software standby), LPT operation during standby, and voltage detection circuits (LVDAb) with 14-level programmable thresholds. The ELC enables event-triggered peripheral operation-including ADC conversion start-without CPU wake-up, reducing system power in battery-powered instrumentation.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin Low-Profile Quad Flat Package, 7 mm × 7 mm body, 0.5 mm pitch, exposed thermal pad (non-electrical), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5BDFL#50, the R5F523E5MDFL#50 trades peak sampling rate for lower power consumption and enhanced noise immunity at low data rates-ideal for battery-operated or thermally constrained nodes. Against ADS125H02IRHBT, it delivers full system integration but with slightly lower max SPS and fixed sinc filter architecture.

Availability

R5F523E5MDFL#50 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, temperature monitoring systems, and structural health monitors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for R5F523E5MDFL#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 IoT markets.

The RX23E-B Group is designed specifically for high-accuracy sensor signal conditioning-integrating precision delta-sigma ADCs, PGAs, excitation sources, and industrial communication interfaces into a single MCU for smart sensor and measurement equipment.

FAQ

What is the maximum sampling rate of the delta-sigma ADC in R5F523E5MDFL#50?

The R5F523E5MDFL#50 delta-sigma ADC supports a maximum sampling rate of 31.25 kSPS. This is confirmed in Table 1.3 of the R01DS0402EJ0100 datasheet for the M-suffix variant. At this rate, the device achieves 24-bit effective resolution with sinc filter configurations enabling simultaneous 50/60 Hz rejection. Lower rates (e.g., 3.8 SPS) provide higher effective resolution for ultra-low-noise static measurements.

Does R5F523E5MDFL#50 support ±10-V analog inputs?

No, R5F523E5MDFL#50 does not support ±10-V analog inputs. Per Figure 1.1 and Table 1.3, the "M" suffix denotes a 5-V analog input range. Only K- and L-suffix variants (e.g., R5F523E5KDFM) support ±10-V inputs on HVAIN pins. The R5F523E5MDFL#50 is rated for ±5-V input, which remains sufficient for most bridge-based sensors with appropriate excitation scaling.

Is the RTC module available in R5F523E5MDFL#50?

No, the realtime clock (RTC) module is not available in the R5F523E5MDFL#50. According to Table 1.2 (Comparison of Functions for Different Packages), RTC is explicitly marked "Not supported" for all 48-pin LFQFP variants-including R5F523E5MDFL#50. Applications requiring calendar timekeeping must implement software-based timing or use an external RTC IC.

What package type and pin count does R5F523E5MDFL#50 use?

R5F523E5MDFL#50 uses the PLQP0048KB-B package: a 48-pin Low-Profile Quad Flat Package with 7 mm × 7 mm body size, 0.5 mm pin pitch, and exposed thermal pad. This is confirmed in Table 1.3 and Figure 1.1 of the datasheet, where "FL" in the part number decodes to "LFQFP/48/0.50". The package supports standard reflow soldering and provides 17 general-purpose I/O pins.

Does R5F523E5MDFL#50 include CAN interface support?

Yes, R5F523E5MDFL#50 includes a fully integrated CAN module (RSCAN) compliant with ISO11898-1. It supports standard and extended frames, 16 message boxes, and bit rates up to 1 Mbps. The CANH and CANL pins are dedicated and electrically isolated within the 48-pin LFQFP layout, enabling robust industrial fieldbus communication without external transceivers beyond standard CAN PHY components.