Renesas R5F523E6NDFN#30

Overview

R5F523E6NDFN#30 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 on-chip flash, 32 KB SRAM, and integrated programmable gain instrumentation amplifier (PGA) with rail-to-rail operation. It operates at up to 32 MHz, supports CAN 2.0B (1 Mbps), and includes hardware CRC, ELC, and IEC60730 safety assist functions for embedded metering applications.

For engineers reviewing the R5F523E6NDFN#30 datasheet, R5F523E6NDFN#30 pinout, R5F523E6NDFN#30 application, or R5F523E6NDFN#30 equivalent, this MCU delivers calibrated high-resolution analog acquisition, deterministic real-time control via MTU2a timers and ELC-triggered peripheral coordination, and robust system-level reliability through dual LVD circuits, IWDT with dedicated oscillator, and memory protection unit - all in an 80-pin LFQFP package rated for –40°C to +85°C.

Technical Context

The R5F523E6NDFN#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 64 DMIPS @ 32 MHz, and Harvard architecture with 5-stage pipeline. Its analog subsystem centers on the DSADB unit: a 24-bit delta-sigma ADC with fourth- and fifth-order sinc filters, configurable PGA (×1–×128), ±5-V HVAIN inputs, and simultaneous 50/60 Hz rejection at 10/54 SPS.

Digital integration includes a 1-channel CAN module compliant to ISO11898-1, 6-channel SCIg with smart-card and bit-rate modulation support, 1-channel RIIC (I²C/SMBus), and RSPI supporting up to 16 Mbps. Clock management uses PLL, sub-clock (32.768 kHz), and CAC for frequency accuracy monitoring, while power control enables software standby with active LPT and three low-power modes.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-Profile Quad Flat Package, 12 × 12 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 sensing MCU applications.

Compared with R5F523E6JDFN#30, R5F523E6NDFN#30 removes LCD hardware to reduce die size and power, while retaining identical analog precision and CAN/SCI connectivity; versus R5F523E5NDFN#30, it doubles flash and RAM for advanced firmware features like OTA updates, multi-protocol stacks, or extended data logging - making it optimal for scalable industrial platforms.

Availability

R5F523E6NDFN#30 is available at Aetrix Electronics and suitable for industrial energy metering, process transmitters, smart grid relays, and high-accuracy weigh scale controllers requiring stable component supply across long production lifecycles.

Supply support for R5F523E6NDFN#30 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 R5F523E6NDFN#30 - was designed specifically for high-accuracy sensor signal conditioning and metrology applications, integrating precision analog front ends, safety-certifiable peripherals, and real-time deterministic processing in a single chip.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6NDFN#30?

The R5F523E6NDFN#30 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS, achieved with modulator clock fMOD = 4 MHz and appropriate sinc filter selection. This rate applies to the DSADB unit configured for ±5-V input range and is validated under specified AVCC0 = 4.5–5.5 V conditions per the R01DS0402EJ0100 datasheet.

Does R5F523E6NDFN#30 include an integrated LCD controller?

No, R5F523E6NDFN#30 does not include an LCD controller. Per Figure 1.1 and Table 1.3 of the datasheet, the "N" suffix denotes inclusion of the 24-bit delta-sigma ADC with 31.25 kSPS and ±5-V input range but explicitly excludes the LCD driver. Models with LCD support use suffixes J, L, or K - for example, R5F523E6JDFN#30 includes 40×4 segment LCD capability.

What analog input voltage range is supported by R5F523E6NDFN#30?

R5F523E6NDFN#30 supports a ±5-V analog input range on its HVAIN pins, as confirmed by Table 1.3 (List of Products) and the "N" variant definition in Figure 1.1. This range is fixed for this part number and differs from "K" or "L" variants that support ±10-V inputs. The ±5-V specification enables direct interface with standard industrial sensors without external level-shifting circuitry.

Which communication interfaces are available on R5F523E6NDFN#30?

R5F523E6NDFN#30 integrates CAN 2.0B (1 channel, up to 1 Mbps), SCIg (6 channels with UART, SPI, and smart-card modes), RIIC (1 channel, I²C/SMBus up to 400 kbps), and RSPI (1 channel, SPI up to 16 Mbps). It does not include SCIh or additional CAN channels - these are reserved for larger-package variants per Table 1.2 (Comparison of Functions).

What is the operating temperature range for R5F523E6NDFN#30?

R5F523E6NDFN#30 is rated for an operating ambient temperature range of –40°C to +85°C, indicated by the "D" suffix in its part number per Figure 1.1. This D-version qualification meets industrial-grade environmental requirements and is distinct from the G-version (–40°C to +105°C) parts such as R5F523E6NGFN#30.