Renesas R5F523E5NDFN#30

Overview

R5F523E5NDFN#30 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 A/D converter with 31.25 kSPS max sampling rate, ±5-V input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), and on-chip excitation current sources (50–1000 µA). The MCU operates at up to 32 MHz, includes 128 KB flash, 16 KB SRAM, 8 KB data flash, and supports CAN, SCI, I²C, and RSPI interfaces.

For engineers reviewing the R5F523E5NDFN#30 datasheet, R5F523E5NDFN#30 pinout, R5F523E5NDFN#30 application, or R5F523E5NDFN#30 equivalent, key selection criteria include its 80-pin LFQFP package, D-version (–40°C to +85°C) temperature rating, 31.25 kSPS delta-sigma ADC performance, ±5-V analog input capability, and integrated analog front-end features for load cell, RTD, and bridge sensor conditioning.

Technical Context

The R5F523E5NDFN#30 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination. Its analog subsystem centers on the DSADB module-synchronized to PCLKC (≤16 MHz)-with fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and hardware-assisted disconnect detection for HVAIN pins.

Digital peripherals include a 1-channel CAN module compliant with ISO 11898-1 (up to 1 Mbps), 6-channel SCIg with bit-rate modulation, and dual timer systems: MTU2a (6×16-bit channels with complementary PWM) and CMT (2×16-bit compare-match timers). Power management supports three low-power modes, LPT operation during software standby, and voltage detection across three independent LVD circuits.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (PLQP0080KB-B), 12 × 12 mm body, 0.5 mm pitch, exposed pad not specified, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5JDFN#30 and R5F523E5NDFP#30, the R5F523E5NDFN#30 provides optimal balance of analog precision, compact 80-pin packaging, and industrial temperature support-making it ideal for space-constrained sensor nodes where LCD and RTC are unnecessary.

Availability

R5F523E5NDFN#30 is available at Aetrix Electronics and suitable for industrial sensor transmitters, RTD-based temperature controllers, load cell interfaces, and strain gauge measurement systems requiring stable component supply and long-term manufacturability.

Supply support for R5F523E5NDFN#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 devices for industrial, automotive, and infrastructure markets.

The RX23E-B Group-including R5F523E5NDFN#30-is designed specifically for high-accuracy analog measurement in industrial sensing, integrating precision delta-sigma ADCs, programmable gain amplifiers, and excitation sources on a single MCU die.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5NDFN#30?

The R5F523E5NDFN#30 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS. This is achieved with the DSADB module using a 4 MHz modulator clock and appropriate sinc filter configuration. At lower data rates (e.g., 10 or 54 SPS), the device provides simultaneous 50 Hz and 60 Hz line frequency rejection for noise-immune industrial measurements.

Does R5F523E5NDFN#30 include an integrated LCD controller?

No, the R5F523E5NDFN#30 does not include an LCD controller. Per the part number decoding (suffix 'N'), this variant omits the LCD driver function. Devices with suffix 'J' or 'L' (e.g., R5F523E5JDFN#30) include the LCDC supporting 40×4 or 36×8 segment formats. The R5F523E5NDFN#30 is optimized for compact sensor nodes where display integration is unnecessary.

What analog input voltage range does R5F523E5NDFN#30 support?

The R5F523E5NDFN#30 supports a ±5-V analog input range on its HVAIN pins, as confirmed by Table 1.3 in the datasheet. While the DSADB module can accept up to ±10-V inputs with external scaling, the native high-voltage input capability of this specific variant is ±5 V. This matches its 'N' suffix designation (31.25 kSPS, ±5-V range, no LCD).

Is the R5F523E5NDFN#30 compatible with Renesas' E1 emulator for debugging?

Yes, the R5F523E5NDFN#30 supports on-chip debugging via the FINE interface and is fully compatible with Renesas' E1 emulator. The device includes an integrated debugging circuit compliant with the RX family's debug specification, enabling breakpoints, watchpoints, real-time trace, and flash programming through standard E1 hardware and CS+ or e2 studio IDEs.

What is the operating temperature range for R5F523E5NDFN#30?

The R5F523E5NDFN#30 is rated for industrial operation from –40°C to +85°C, indicated by the 'D' in its part number (R5F523E5NDFN#30). This temperature grade ensures reliable performance in demanding environments such as factory automation, process control, and outdoor instrumentation without derating.