Renesas R5F523E6BGFL#30

Overview

R5F523E6BGFL#30 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor interfaces and metering systems. It integrates a 24-bit delta-sigma ADC (125 kSPS max), rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), ±10-V input capability, on-chip excitation current sources (50–1000 µA), and 256 KB flash/32 KB SRAM - all operating at up to 32 MHz across –40°C to +105°C.

For engineers reviewing the R5F523E6BGFL#30 datasheet, R5F523E6BGFL#30 pinout, R5F523E6BGFL#30 application, or R5F523E6BGFL#30 equivalent, this MCU delivers deterministic real-time control with integrated IEC60730 safety assist functions, CAN 2.0B interface (1 Mbps), and ELC-triggered analog acquisition - critical for smart transmitters, load cells, and precision energy monitoring designs.

Technical Context

The R5F523E6BGFL#30 implements the RXv2 CPU core with IEEE 754-compliant FPU, 5-stage CISC Harvard pipeline, and memory protection unit (MPU) - enabling deterministic execution of floating-point sensor compensation algorithms. Its dual A/D subsystem combines a 24-bit delta-sigma converter (DSADB) with 12-bit SAR converter (S12ADE), each independently clocked (PCLKC up to 16 MHz, PCLKD up to 32 MHz) and triggerable via ELC or software.

Analog front-end integration includes two independent excitation current sources (±0.2% matching, 5 ppm/°C drift), bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and HVAIN pins rated for ±10 V - supporting direct connection to strain gauges, RTDs, and bridge sensors without external signal conditioning. The DSADB supports four sinc filter configurations and simultaneous 50/60 Hz rejection at 10/54 SPS.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, 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 R5F523E6BGFL#30, R5F523E6KGFM#30 offers expanded I/O and package size at the cost of board area, while R5F523E5BGFL#30 trades extended temperature rating and memory capacity for lower unit cost - making R5F523E6BGFL#30 optimal for compact, high-reliability, high-precision embedded metering.

Availability

R5F523E6BGFL#30 is available at Aetrix Electronics and suitable for industrial sensor interfaces, smart transmitters, and precision energy metering requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F523E6BGFL#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 applications.

The RX23E-B Group targets high-accuracy sensor signal conditioning and metrology, integrating precision analog front-ends with real-time MCUs to replace discrete signal chains in industrial automation and smart infrastructure.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BGFL#30?

The R5F523E6BGFL#30 supports a maximum 24-bit delta-sigma ADC sampling rate of 125 kSPS. This rate is achievable with reduced effective resolution and specific sinc filter configuration; at 3.8 SPS, it achieves 24-bit effective resolution with gain = 1. The modulator clock is fixed at 4 MHz (typ.), and oversampling ratios range from 32 to 1,048,576 depending on data rate selection.

Does R5F523E6BGFL#30 include an integrated voltage reference, and what is its accuracy?

Yes, R5F523E6BGFL#30 includes an on-chip voltage reference with 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 can be used directly by the DSADB and S12ADE converters, eliminating the need for external precision references in many metrology applications.

Can R5F523E6BGFL#30 operate with a single power supply, and what is the valid voltage range?

Yes, R5F523E6BGFL#30 operates from a single 1.8-V to 5.5-V supply for digital domains (VCC). Its analog section requires AVCC0 = 4.5–5.5 V for full DSADB/S12ADE performance, though S12ADE alone can function down to 1.8 V. This dual-supply flexibility simplifies power design while maintaining analog precision.

What safety features does R5F523E6BGFL#30 provide for IEC60730 compliance?

R5F523E6BGFL#30 includes hardware-assisted IEC60730 compliance features: RAM test support via Data Operation Circuit (DOC), A/D converter self-diagnostic and disconnect detection, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, and voltage monitor circuits (LVDAb) with multiple threshold levels - all documented in the functional safety manual R01US0237EJ0100.

Is R5F523E6BGFL#30 pin-compatible with other RX23E-B variants in the 48-pin LFQFP package?

Yes, R5F523E6BGFL#30 is pin-compatible with other RX23E-B 48-pin LFQFP variants (e.g., R5F523E5BGFL#30, R5F523E6MGFL#30) sharing the PLQP0048KB-B package. Pin functions, power domains, and peripheral mappings are consistent across these variants; differences lie only in flash/RAM size, temperature grade, and analog input range - verified in Table 1.2 of R01DS0402EJ0100.