Renesas R5F523E5NGBS#20

Overview

R5F523E5NGBS#20 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 128-KB on-chip flash, 16-KB SRAM, 8-KB data flash, and a 24-bit delta-sigma A/D converter with 31.25 kSPS max sampling rate and ±5-V analog input range. It integrates rail-to-rail programmable gain instrumentation amplifiers (gain = 1–128), dual excitation current sources (50–1000 µA), and a low-drift 2.5-V voltage reference - all in a 100-pin TFBGA package rated for –40°C to +105°C operation.

For engineers reviewing the R5F523E5NGBS#20 datasheet, R5F523E5NGBS#20 pinout, R5F523E5NGBS#20 application, or R5F523E5NGBS#20 equivalent, key selection criteria include its integrated 24-bit DSAD with simultaneous 50/60 Hz rejection, CAN 2.0B compliance at up to 1 Mbps, real-time clock with calendar mode, and IEC60730 safety support functions including RAM test assistance and A/D self-diagnostic features.

Technical Context

The R5F523E5NGBS#20 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, supporting 64 DMIPS at 32 MHz and IEEE 754-compliant single-precision FPU. Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), with configurable sinc filters and programmable modulator clock (4 MHz typ.) enabling precise low-noise measurements.

Digital integration includes ELC-driven event-triggered peripheral operation without CPU wake-up, four-channel DMAC with block/normal/repeat transfer modes, and MPC-based pin function multiplexing across 58 general-purpose I/Os - all operating from a single 1.8–5.5-V supply with three low-power modes and sub-clock RTC/LPT operation.

Key Specifications

Pinout & Package

Package: PTBG0100KD-A - 100-pin TFBGA, 5.5 mm × 5.5 mm, 0.5 mm pitch, –40°C to +105°C operating range.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision sensing MCU applications.

Compared with R5F523E5NGBS#20, R5F523E5NDFP offers identical analog performance in a more manufacturable package but sacrifices extended temperature capability, while R5F523E5NGFN reduces system cost and size at the expense of real-time clock functionality and I/O scalability.

Availability

R5F523E5NGBS#20 is available at Aetrix Electronics and suitable for industrial weigh scales, energy meters, process transmitters, and smart pressure sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5NGBS#20 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 applications.

The RX23E-B Group - including R5F523E5NGBS#20 - was designed specifically for high-accuracy industrial sensing, integrating metrology-grade analog front ends with real-time control capabilities and functional safety support.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma A/D converter in R5F523E5NGBS#20?

The R5F523E5NGBS#20 supports a maximum sampling rate of 31.25 kSPS for its 24-bit delta-sigma A/D converter. This rate is achieved with specific filter configurations and modulator clock settings, and it applies to the N-series variant which targets high-precision, lower-bandwidth applications such as weigh scales and process transmitters where noise rejection is prioritized over speed.

Does R5F523E5NGBS#20 include an integrated real-time clock (RTC)?

Yes, R5F523E5NGBS#20 includes a fully featured real-time clock (RTCc) module supporting both calendar count mode and binary count mode. It accepts the 32.768-kHz sub-clock oscillator as its time base and provides alarm, periodic, and carry interrupts - essential for time-stamped data logging and scheduled system operations in industrial applications.

What analog input voltage range does R5F523E5NGBS#20 support on its HVAIN pins?

R5F523E5NGBS#20 supports a ±5-V analog input range on its HVAIN pins, as confirmed by its "N" suffix designation in the part numbering scheme. This range is optimized for industrial transducers and bridge sensors, and the device includes dedicated fault detectors for HVAIN disconnect and overvoltage conditions.

Can R5F523E5NGBS#20 operate in extended temperature environments?

Yes, R5F523E5NGBS#20 is rated for operation from –40°C to +105°C, indicated by the "G" in its part number. This extended temperature grade makes it suitable for deployment in harsh industrial environments such as factory floors, outdoor metering equipment, and enclosed control cabinets without active cooling.

How many excitation current sources does R5F523E5NGBS#20 integrate, and what is their accuracy?

R5F523E5NGBS#20 integrates two independent excitation current sources (IEXC0 and IEXC1) with programmable output from 50 µA to 1000 µA. Their current matching is specified at ±0.2%, and drift matching is 5 ppm/°C - critical for precision ratiometric measurements in 4-wire RTD and strain gauge applications.