Renesas R5F523E5NDFN#10

Overview

R5F523E5NDFN#10 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 supports CAN, SCI, I²C, and RSPI interfaces.

For engineers reviewing the R5F523E5NDFN#10 datasheet, R5F523E5NDFN#10 pinout, R5F523E5NDFN#10 application, or R5F523E5NDFN#10 equivalent, key selection criteria include its 31.25 kSPS delta-sigma ADC performance, ±5-V analog input capability, integrated PGA and excitation sources for bridge sensor conditioning, low-power software standby mode with LPT, and ISO 11898-1 CAN compliance for industrial bus integration.

Technical Context

The R5F523E5NDFN#10 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 unit synchronized to PCLKC (≤16 MHz), featuring fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and offset/gain error calibration.

Digital peripherals include a 4-channel DMAC, ELC for interrupt-free module linking, and dedicated clock domains: ICLK (CPU/system, ≤32 MHz), PCLKA (MTU2a), PCLKC (DSADB), and PCLKD (S12AD). The device uses an 80-pin LFQFP package (PLQP0080KB-B) with 58 GPIOs, 6 of which are 5-V tolerant.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (PLQP0080KB-B), 12 × 12 mm, 0.5 mm pitch, exposed pad (thermal enhancement).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5JDFN#10, the R5F523E5NDFN#10 delivers superior analog signal chain integration for sensor conditioning, while ADS1220IPWR offers no embedded processing - making R5F523E5NDFN#10 the only option that consolidates precision acquisition, computation, and industrial communication in one die.

Availability

R5F523E5NDFN#10 is available at Aetrix Electronics and suitable for industrial weigh scales, temperature transmitters, power quality monitors, and motor protection relays requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5NDFN#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 infrastructure markets.

The RX23E-B Group - including R5F523E5NDFN#10 - was designed specifically for high-accuracy sensor signal acquisition and closed-loop control in industrial process instrumentation, eliminating external analog components while meeting IEC 60730 safety requirements.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5NDFN#10?

The R5F523E5NDFN#10 supports a maximum sampling rate of 31.25 kSPS for its 24-bit delta-sigma ADC (DSADB unit). 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 AC-coupled industrial measurements.

Does R5F523E5NDFN#10 support ±10-V analog inputs?

No, R5F523E5NDFN#10 does not support ±10-V analog inputs. Per Table 1.3 and Figure 1.1, the "N" suffix denotes a 31.25 kSPS sampling rate with up to ±5-V input range. The "L" and "K" variants (e.g., R5F523E5LDFN#10) provide ±10-V capability, but R5F523E5NDFN#10 is limited to ±5 V on its HVAIN pins.

What package type and pin count does R5F523E5NDFN#10 use?

R5F523E5NDFN#10 uses an 80-pin LFQFP package (PLQP0080KB-B), measuring 12 × 12 mm with 0.5 mm pitch and an exposed thermal pad. This package provides 58 general-purpose I/O pins, 6 of which are 5-V tolerant, and supports all core analog and communication peripherals except the RTC and full LCD driver.

Can R5F523E5NDFN#10 operate from a single 3.3-V supply?

Yes, R5F523E5NDFN#10 operates from a single 1.8-V to 5.5-V supply. At 3.3 V, it supports maximum 32-MHz operation per the VCC vs. frequency specification (VCC ≥ 2.7 V → 32 MHz). AVCC0 must be supplied separately at 4.5–5.5 V for full 12-bit ADC accuracy, but the DSADB unit functions correctly with AVCC0 = 3.3 V at reduced performance.

Is the CAN interface on R5F523E5NDFN#10 compatible with ISO 11898-1?

Yes, the RSCAN module in R5F523E5NDFN#10 is fully compliant with ISO 11898-1 for standard and extended frame formats, supporting bit rates up to 1 Mbps. It requires an external CAN transceiver (e.g., TJA1042) for physical layer interfacing; the MCU provides only the protocol controller and message RAM with 16 message boxes.