Renesas R5F523E6LDBS#00

Overview

R5F523E6LDBS#00 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensing and measurement, featuring a 32-MHz CPU core, 256-KB on-chip flash, 32-KB SRAM, 8-KB data flash, and a 24-bit delta-sigma A/D converter with ±10-V input capability, 125-kSPS max sampling rate, and rail-to-rail programmable gain instrumentation amplifier (PGA) supporting gains up to ×128.

For engineers reviewing the R5F523E6LDBS#00 datasheet, R5F523E6LDBS#00 pinout, R5F523E6LDBS#00 application, or R5F523E6LDBS#00 equivalent, this MCU delivers integrated analog front-end (AFE) functionality-including excitation current sources (50–1000 µA), low-drift voltage reference (2.5 V, 8 ppm/°C), temperature sensor, and HVAIN ±10-V inputs-enabling direct connection to strain gauges, load cells, and RTDs without external signal conditioning.

Technical Context

The R5F523E6LDBS#00 integrates a dedicated analog subsystem centered on the DSADB 24-bit delta-sigma ADC, synchronized to PCLKC (up to 16 MHz), with four selectable sinc filter configurations and simultaneous 50/60-Hz rejection at 10/54 SPS. Its AFE includes two independent excitation current sources (±0.2% matching, 5 ppm/°C drift), bias voltage generator, and ±10-V HVAIN pins routed through internal low-side switches (10 Ω on-resistance).

It employs the RXv2 CISC Harvard architecture with 5-stage pipeline, IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination-critical for deterministic real-time control in IEC 60730-compliant systems requiring self-diagnostic A/D calibration, RAM testing, and clock accuracy monitoring via CAC.

Key Specifications

Pinout & Package

Package: PTBG0100KD-A - 100-pin TFBGA, 5.5 mm × 5.5 mm, 0.5 mm pitch, 0.8 mm height, lead-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E6LDBS#00, R5F523E6LDFP#00 offers identical electrical performance but demands larger PCB area and different reflow profile, while R5F523E5LDBS#00 trades memory headroom for lower unit cost-neither is pin-compatible due to differing package types or memory mapping constraints.

Availability

R5F523E6LDBS#00 is available at Aetrix Electronics and suitable for industrial weigh scales, process transmitters, and energy metering modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for R5F523E6LDBS#00 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 R5F523E6LDBS#00, was designed specifically for high-accuracy sensor signal acquisition in industrial automation, smart grid, and test equipment-integrating metrology-grade AFE with real-time MCU control.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6LDBS#00?

The R5F523E6LDBS#00 supports a maximum sampling rate of 125 kSPS for its 24-bit delta-sigma ADC (DSADB). This rate is achievable with modulator clock fMOD = 4 MHz and appropriate sinc filter selection. At lower data rates (e.g., 10 or 54 SPS), the device provides simultaneous 50 Hz and 60 Hz line-frequency rejection-critical for noise-immune industrial measurements.

Does R5F523E6LDBS#00 support ±10-V analog inputs, and how are they implemented?

Yes, R5F523E6LDBS#00 supports ±10-V analog inputs via four dedicated HVAIN pins (HVAIN0–HVAIN3). These pins connect directly to the internal 24-bit delta-sigma ADC and programmable gain instrumentation amplifier. The ±10-V range is enabled by internal level-shifting circuitry and requires AVCC0 ≥ 4.5 V; no external attenuators or op-amps are needed for direct load-cell or strain-gauge interfacing.

What excitation current source capabilities does R5F523E6LDBS#00 provide for RTD or bridge sensors?

R5F523E6LDBS#00 integrates two precision excitation current sources (IEXC0 and IEXC1) with programmable output from 50 µA to 1000 µA in six discrete steps. They feature ±0.2% current matching and 5 ppm/°C drift matching-enabling accurate 2-, 3-, or 4-wire RTD measurements and ratiometric bridge sensing without external current drivers or trimming components.

Is R5F523E6LDBS#00 qualified for IEC 60730 functional safety compliance?

R5F523E6LDBS#00 includes hardware features explicitly intended to assist IEC 60730 compliance: self-diagnostic A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and analog input disconnect detection. These reduce software validation burden but require system-level implementation per Class B requirements.

What is the operating temperature range and package type of R5F523E6LDBS#00?

R5F523E6LDBS#00 is rated for an operating ambient temperature range of –40°C to +85°C (D version) and is supplied in a 100-pin TFBGA package (PTBG0100KD-A), measuring 5.5 mm × 5.5 mm with 0.5 mm pitch. This compact, low-profile package supports high-density industrial PCB layouts and automated assembly with standard reflow profiles.