Renesas R5F523E5BDFL#10

Overview

R5F523E5BDFL#10 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial sensor signal conditioning and analog front-end control. It integrates a 24-bit delta-sigma ADC with ±10-V input capability, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and a low-drift 2.5-V voltage reference (8 ppm/°C). Operating at up to 32 MHz, it delivers 64 DMIPS and supports IEC60730-compliant diagnostics in smart transmitters and load cell interfaces.

For engineers reviewing the R5F523E5BDFL#10 datasheet, R5F523E5BDFL#10 pinout, R5F523E5BDFL#10 application, or R5F523E5BDFL#10 equivalent, key selection criteria include its 128-KB flash / 16-KB SRAM configuration, 48-pin LFQFP package (PLQP0048KB-B), 125-kSPS delta-sigma sampling rate, ±10-V HVAIN support, and integrated CAN 2.0B interface - all validated for precision measurement systems requiring embedded self-test and analog integrity monitoring.

Technical Context

The R5F523E5BDFL#10 implements a dedicated analog subsystem centered on the DSADB module, synchronized to PCLKC (up to 16 MHz), with configurable sinc filters (4th/5th-order) and simultaneous 50/60 Hz rejection at 10/54 SPS. Its AFEA includes two independent excitation current sources with ±0.2% matching and 5 ppm/°C drift, bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and HVAIN pins rated for ±10 V.

It features an RXv2 CPU core with IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination - critical for deterministic real-time response in closed-loop industrial controllers. The device supports software standby mode with low-power timer (LPT) operation and IEC60730 diagnostic assist functions for ADC, clock accuracy (CAC), IWDT, and RAM testing.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, exposed pad, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5BDFL#10, R5F523E5KDFL#10 extends analog input range to ±10 V for higher-sensitivity transducers, while R5F523E5BDFN#10 retains identical electrical performance in a 36% smaller package - enabling trade-offs between input range headroom and board space without sacrificing AFE precision or diagnostic capability.

Availability

R5F523E5BDFL#10 is available at Aetrix Electronics and suitable for industrial sensor transmitters, smart pressure modules, and PLC analog input cards requiring stable component supply, long-lifecycle assurance, and traceable sourcing for IEC60730-certified designs.

Supply support for R5F523E5BDFL#10 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 R5F523E5BDFL#10 - was designed specifically for high-accuracy industrial measurement applications, integrating precision analog front ends, IEC60730 safety features, and real-time control capabilities in a single chip.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E5BDFL#10?

The R5F523E5BDFL#10 supports a maximum delta-sigma ADC sampling rate of 125 kSPS at 3.8 SPS to 125 kSPS programmable range, achieved with fMOD = 4 MHz modulator clock. This rate is confirmed in Table 1.3 of the R01DS0402EJ0100 datasheet for B-suffix devices in 48-pin LFQFP packages. The actual effective resolution depends on data rate and filter configuration - e.g., 24-bit effective resolution at 3.8 SPS, lower resolution at higher rates.

Does R5F523E5BDFL#10 include an LCD controller/driver?

No, R5F523E5BDFL#10 does not include an LCD controller/driver. Per Figure 1.1 and Table 1.3 in the R01DS0402EJ0100 datasheet, the "B" suffix explicitly denotes "LCD driver not included". This distinguishes it from "J", "L", and "N" variants which integrate LCD functionality. The R5F523E5BDFL#10 is optimized for analog-intensive applications where display driving is handled externally or omitted.

What analog input voltage range is supported by R5F523E5BDFL#10?

R5F523E5BDFL#10 supports a ±5-V analog input range on its HVAIN pins, as specified in Table 1.3 of the R01DS0402EJ0100 datasheet under the "B" variant column. This is distinct from "K" and "L" variants which support ±10 V. The ±5-V range is sufficient for most industrial bridge sensors and RTDs when paired with the on-chip PGA (gain = 1–128) and excitation sources.

How many excitation current sources does R5F523E5BDFL#10 provide, and what are their specifications?

R5F523E5BDFL#10 provides two independent excitation current sources (IEXC0 and IEXC1), each programmable from 50 µA to 1000 µA in six discrete steps. As documented in Section 1.1 and Table 1.1, they feature ±0.2% current matching and 5 ppm/°C drift matching - critical for high-accuracy ratiometric measurements in 3-wire/4-wire RTD and strain gauge applications.

Is R5F523E5BDFL#10 qualified for IEC60730 functional safety compliance?

R5F523E5BDFL#10 includes hardware-assisted IEC60730 compliance features - including self-diagnostic functions for the delta-sigma ADC, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance (via DOC), and analog disconnect detection. These are explicitly listed in the "Useful functions for IEC60730 compliance" section of the datasheet, enabling certified Class B safety implementations without external monitors.