Renesas R5F523E6NDFP#30

Overview

R5F523E6NDFP#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 supports CAN 2.0B (1 Mbps), six SCI channels, I²C, RSPI, and real-time clock - deployed in smart sensor nodes, PLC analog I/O modules, and energy metering front-ends.

For engineers reviewing the R5F523E6NDFP#30 datasheet, R5F523E6NDFP#30 pinout, R5F523E6NDFP#30 application, or R5F523E6NDFP#30 equivalent, this MCU delivers calibrated 24-bit sigma-delta conversion at low power, hardware-accelerated CRC and DOC for IEC 60730 compliance, and ELC-triggered peripheral coordination without CPU wake-up - critical for deterministic sensor fusion and functional safety–enabled designs.

Technical Context

The R5F523E6NDFP#30 implements the RXv2 CPU core with 32 MHz max operation (64 DMIPS), single-precision IEEE 754 FPU, and memory protection unit (MPU). Its analog subsystem centers on the DSADB module: a 24-bit delta-sigma ADC with fourth/fifth-order sinc filtering, ±5-V HVAIN inputs, and PGA gain ×1 to ×128 - all synchronized via PCLKC up to 16 MHz.

Digital integration includes RSCAN (CAN 2.0B), six SCIg channels supporting LIN/UART/SPI-like modes, RIICa (I²C/SMBus), and RSPIc (16 Mbps master/slave). Power management enables software standby with LPT running off sub-clock, while ELC links timer triggers directly to ADC/DAC start events - eliminating interrupt latency in closed-loop control.

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 sensing MCU applications.

Compared with R5F523E6NDFP#30, the LDFP variant extends analog input capability for wider dynamic range applications, while the R5F523E5NDFP#30 reduces memory cost without sacrificing ADC performance or peripheral functionality - both retain identical 100-pin LFQFP packaging and D-version temperature grade.

Availability

R5F523E6NDFP#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, PLC analog I/O modules, and energy metering front-ends requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F523E6NDFP#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 IoT markets.

The RX23E-B Group targets high-accuracy measurement applications, integrating metrology-grade analog front-ends with robust real-time processing and functional safety features - designed specifically for industrial sensing, smart grid, and precision instrumentation.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6NDFP#30?

The R5F523E6NDFP#30 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS. This is confirmed in Table 1.3 of the datasheet (R01DS0402EJ0100) under the "Sampling Rate (max.)" column for part number R5F523E6NDFP. The device uses a 4 MHz modulator clock and supports multiple sinc filter configurations to achieve this rate while maintaining 24-bit effective resolution at lower output data rates.

Does R5F523E6NDFP#30 include an integrated voltage reference, and what is its accuracy?

Yes, R5F523E6NDFP#30 includes an on-chip voltage reference (VREF) with a nominal output of 2.5 V, temperature drift of 8 ppm/°C over –40°C to +85°C, and output current capability of ±10 mA. This reference is used by both the 24-bit delta-sigma ADC and the 16-bit DAC, and its stability is specified in the "Analog front end (AFEA)" section of the datasheet (Page 6).

Is R5F523E6NDFP#30 pin-compatible with other RX23E-B group MCUs in the same package?

Yes, R5F523E6NDFP#30 is pin-compatible with all other RX23E-B MCUs in the PLQP0100KB-B (100-pin LFQFP) package, including R5F523E6LDFP#30 and R5F523E5NDFP#30. Table 1.2 confirms identical peripheral channel counts and pin functions across these variants, enabling layout reuse and firmware migration within the same package footprint.

What communication interfaces does R5F523E6NDFP#30 support for industrial networking?

R5F523E6NDFP#30 supports CAN 2.0B (1 Mbps), six SCIg channels (with UART, SPI-like, and LIN-capable SCIh), one I²C bus interface (RIICa, up to 400 kbps), and one RSPIc (16 Mbps master/slave). These interfaces enable direct connection to fieldbus networks, sensor clusters, and isolated communication gateways - all documented in Section 1.1 "Outline of Specifications" and Figure 1.2 block diagram.

How does R5F523E6NDFP#30 support IEC 60730 functional safety compliance?

R5F523E6NDFP#30 provides hardware-assisted IEC 60730 compliance via self-diagnostic A/D converter tests, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with disconnect detection, RAM test assistance using the DOC, and analog input disconnect detection. These features are explicitly listed under "Useful functions for IEC60730 compliance" on Page 1 of the datasheet.