Renesas R5F523E5MDFM#10

Overview

R5F523E5MDFM#10 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 128-KB on-chip flash, 16-KB SRAM, 8-KB data flash, and a 24-bit delta-sigma A/D converter with 31.25 kSPS max sampling rate and ±5-V analog input range. It integrates a rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), and CAN 2.0B interface - deployed in load cell signal conditioning, weigh scale front-ends, and precision sensor transmitters.

For engineers reviewing the R5F523E5MDFM#10 datasheet, R5F523E5MDFM#10 pinout, R5F523E5MDFM#10 application, or R5F523E5MDFM#10 equivalent, key selection criteria include its 64-pin LFQFP package (PLQP0064KB-C), absence of LCD driver, D-version temperature rating (–40°C to +85°C), and trade-off between reduced delta-sigma A/D speed (31.25 kSPS vs. 125 kSPS) and 5-V input range compatibility - critical for bridge sensor interfaces requiring high common-mode rejection and low-noise analog acquisition.

Technical Context

The R5F523E5MDFM#10 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, supporting 64 DMIPS at 32 MHz and IEEE 754-compliant single-precision FPU. Its analog subsystem centers on the DSADB unit synchronized to PCLKC (≤16 MHz), with fourth- to fifth-order sinc digital filtering, simultaneous 50/60 Hz rejection at 10/54 SPS, and offset/gain error calibration.

Digital integration includes ELC-driven event-triggered A/D conversion, four-channel DMAC for background data movement, and RSCAN CAN module compliant to ISO 11898-1 (1 Mbps). Power management supports three low-power modes, LPT operation during software standby, and voltage detection circuits with 14-level programmable thresholds on LVDAb1.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm body, 0.5 mm pitch, exposed 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 R5F523E5MDFM#10, R5F523E5KDFM#10 delivers extended input range and faster sampling at identical package size, while R5F523E5MDFN#10 trades I/O and routing headroom for board area reduction - making the MDFM variant optimal for cost-sensitive, medium-I/O industrial sensor nodes requiring ±5-V compatibility and proven thermal stability.

Availability

R5F523E5MDFM#10 is available at Aetrix Electronics and suitable for industrial weighing terminals, pressure transmitters, and RTD temperature modules requiring stable component supply, long-term lifecycle support, and guaranteed D-version temperature compliance (–40°C to +85°C).

Supply support for R5F523E5MDFM#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 industrial, automotive, and IoT applications - with over 40 years of embedded systems expertise.

The RX23E-B Group, including R5F523E5MDFM#10, was designed specifically for high-accuracy industrial measurement systems requiring integrated 24-bit delta-sigma A/D, programmable gain amplification, and functional safety support - targeting weigh scales, process transmitters, and energy metering.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma A/D converter in R5F523E5MDFM#10?

The R5F523E5MDFM#10 supports a maximum delta-sigma A/D sampling rate of 31.25 kSPS. This is confirmed in Table 1.3 of the official datasheet (R01DS0402EJ0100 Rev.1.00), where the "M" suffix denotes the 31.25 kSPS variant with ±5-V input range. The device does not support the 125 kSPS mode found in "L" or "K" variants.

Does R5F523E5MDFM#10 include an LCD controller/driver?

No, R5F523E5MDFM#10 does not include an LCD controller/driver. Per Figure 1.1 (Part Number Decoding) in the datasheet, the "M" suffix explicitly indicates "LCD driver not included". This distinguishes it from "L", "J", and "N" variants which integrate LCD functionality - making R5F523E5MDFM#10 ideal for applications where display is handled externally or not required.

What is the operating temperature range specified for R5F523E5MDFM#10?

R5F523E5MDFM#10 is rated for operation from –40°C to +85°C, as indicated by the "D" suffix in its part number per Figure 1.1. This D-version qualification is documented in Table 1.3 and applies across all electrical specifications - including the 24-bit A/D converter's effective resolution, PGA noise performance, and voltage reference drift (8 ppm/°C).

How many excitation current sources does R5F523E5MDFM#10 provide, and what are their key specifications?

R5F523E5MDFM#10 provides two independent excitation current sources (IEXC0 and IEXC1), each programmable from 50 µA to 1000 µA in six discrete steps. As specified in Section 1.1 (Table 1.1), they feature ±0.2% current matching and 5 ppm/°C drift matching - enabling precise 4-wire RTD or dual-bridge measurements without external calibration.

Is R5F523E5MDFM#10 pin-compatible with other RX23E-B group MCUs in the same package?

R5F523E5MDFM#10 is pin-compatible with other 64-pin LFQFP RX23E-B devices (e.g., R5F523E5BDFM#10, R5F523E5KDFM#10) sharing the PLQP0064KB-C package. Pin functions are consistent across the group per Table 1.4 (Pin Functions), though peripheral availability (e.g., RTC, LCD) varies by variant - verified in Table 1.2 (Comparison of Functions for Different Packages).