Renesas R5F523E6NGFP#10

Overview

R5F523E6NGFP#10 from Renesas Electronics is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 256-KB on-chip flash, 32-KB SRAM, 8-KB data flash, one 24-bit delta-sigma A/D converter with 31.25 kSPS max sampling rate and ±5-V analog input range, and integrated CAN 2.0B interface compliant to ISO11898-1. It targets load cell, pressure sensor, and weigh scale systems requiring low-drift analog front-end performance.

For engineers reviewing the R5F523E6NGFP#10 datasheet, R5F523E6NGFP#10 pinout, R5F523E6NGFP#10 application, or R5F523E6NGFP#10 equivalent, this MCU delivers calibrated 24-bit sigma-delta conversion, rail-to-rail programmable gain instrumentation amplification (gain = 1–128), ±10-V HVAIN support, on-chip excitation current sources (50–1000 µA), and real-time clock with calendar mode - all in a 100-pin LFQFP package operating from –40°C to +105°C.

Technical Context

The R5F523E6NGFP#10 implements the RXv2 CPU core with IEEE 754-compliant 32-bit floating-point unit, 64 DMIPS at 32 MHz, and memory protection unit (MPU) for functional safety compliance. Its analog subsystem centers on the DSADB module synchronized to PCLKC (up to 16 MHz), supporting fourth- and fifth-order sinc digital filters and simultaneous 50/60 Hz rejection at 10/54 SPS.

Digital integration includes ELC-driven event-triggered operation for low-power wake-up, four-channel DMAC with software/external/interrupt activation, and RSCAN CAN controller with 16 message boxes and bit rates up to 1 Mbps. Clock management supports independent ICLK (32 MHz), PCLKA/B/C/D domains, and CAC-based frequency accuracy monitoring.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 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 R5F523E6LGFP#10, R5F523E6NGFP#10 trades 125 kSPS and ±10-V input capability for lower system cost and identical thermal robustness; versus ADUCM360, it adds CAN, higher-speed timers, and ELC-driven autonomous operation - making it superior for distributed industrial nodes requiring local decision-making and bus communication.

Availability

R5F523E6NGFP#10 is available at Aetrix Electronics and suitable for industrial weigh scales, pressure transmitters, motor feedback units, and energy metering sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E6NGFP#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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, delivering microcontrollers, analog, power, and SoC products for automotive, industrial, and IoT markets.

The RX23E-B Group - including R5F523E6NGFP#10 - was designed specifically for high-accuracy industrial measurement applications, integrating metrology-grade analog peripherals with real-time control capabilities and functional safety features aligned with IEC 60730.

FAQ

What is the maximum sampling rate supported by the 24-bit delta-sigma ADC in R5F523E6NGFP#10?

The R5F523E6NGFP#10 supports a maximum sampling rate of 31.25 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achieved with modulator clock fMOD = 4 MHz and applies to configurations using fourth-order sinc filtering. Lower rates (e.g., 10 SPS or 54 SPS) enable simultaneous 50/60 Hz rejection for industrial noise immunity. The R5F523E6NGFP#10 does not support the 125 kSPS mode found in L/K-series variants.

Does R5F523E6NGFP#10 include an integrated CAN controller, and what protocol versions does it support?

Yes, the R5F523E6NGFP#10 integrates one RSCAN (RX Standard CAN) module compliant with ISO 11898-1, supporting both standard (11-bit) and extended (29-bit) frame formats at bit rates up to 1 Mbps. It includes 16 message boxes with flexible acceptance filtering and hardware timestamping. The R5F523E6NGFP#10 does not implement CAN FD or higher-layer protocols like CANopen or DeviceNet - those require software stack implementation.

What analog input voltage range is supported by the HVAIN pins on R5F523E6NGFP#10?

The HVAIN pins on R5F523E6NGFP#10 support a ±5-V differential input range, as indicated by the "N" suffix in the part number (per Figure 1.1). This is distinct from the ±10-V range offered by "L" and "K" variants. The ±5-V range is sufficient for most bridge sensor interfaces, including load cells and pressure transducers with typical output spans of ±20 mV to ±100 mV after PGA gain.

Can R5F523E6NGFP#10 operate with a single 3.3-V supply, and what are the implications for analog performance?

Yes, the R5F523E6NGFP#10 operates from a single 1.8-V to 5.5-V supply. At 3.3 V, the maximum CPU frequency is 32 MHz (VCC ≥ 2.7 V), and the analog domain (AVCC0) must be supplied at 4.5–5.5 V to guarantee full ±5-V HVAIN range and 24-bit DSAD performance. Running AVCC0 at 3.3 V restricts HVAIN to ±2.5 V and degrades effective resolution - the R5F523E6NGFP#10 requires separate 5-V analog rail for specified metrology accuracy.

What debugging interface does R5F523E6NGFP#10 support, and is JTAG available?

The R5F523E6NGFP#10 supports the FINE (Fast In-Circuit Emulator) interface for on-chip debugging, compatible with Renesas E1/E20 emulators. It does not support standard JTAG (IEEE 1149.1); FINE uses a 6-pin SWD-like serial interface with clock, data, reset, and power lines. Debug access includes full breakpoint, watchpoint, and real-time trace capabilities via the E1 emulator - essential for validating timing-critical sensor firmware on the R5F523E6NGFP#10.