Renesas R5F523E6SGFL#30

Overview

R5F523E6SGFL#30 from Renesas is a 32-bit RXv2 core MCU optimized for high-precision industrial sensor signal conditioning, featuring dual 24-bit delta-sigma ADCs (DSAD0/DSAD1), rail-to-rail programmable gain instrumentation amplifiers (PGA ×8 gain settings), 2.5 V low-drift voltage reference (10 ppm/°C), and integrated excitation current sources (50–1000 µA). It operates at 32 MHz with 256 KB flash, 32 KB SRAM, and supports –40°C to +105°C ambient temperature.

For engineers reviewing the R5F523E6SGFL#30 datasheet, R5F523E6SGFL#30 pinout, R5F523E6SGFL#30 application, or R5F523E6SGFL#30 equivalent, this device delivers calibrated 23-bit effective resolution at 7.6 SPS, simultaneous 50/60 Hz rejection, and IEC60730-compliant self-diagnostic functions - critical for thermocouple, RTD, and load cell measurement systems requiring functional safety support.

Technical Context

The R5F523E6SGFL#30 integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, programmable gain instrumentation amplifiers (gain = 1–128), and dedicated analog front-end resources including four excitation current sources, bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and low-side switch (10 Ω max). Its analog subsystem supports differential, pseudo-differential, and single-ended inputs across up to 11 channels per DSAD unit.

Digital architecture centers on the RXv2 CPU core running at 32 MHz (64 DMIPS), with memory protection unit (MPU), single-precision FPU (IEEE 754), and event link controller (ELC) enabling interrupt-free peripheral coordination. Clocking includes PLL, on-chip oscillators, and clock frequency accuracy measurement circuit (CAC) for system-level timing validation.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad not specified. Pinout validated per Renesas R01DS0330EJ0130 Rev.1.30, Pages 11–14.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision sensor signal conditioning applications.

Compared with R5F523E6ADFL#30, the R5F523E6SGFL#30 provides identical functionality with extended temperature qualification, while the ADS131M04IPBSR lacks on-chip processing, PGA, and excitation - making it unsuitable as a drop-in replacement but viable in host-processor-based designs requiring higher channel density.

Availability

R5F523E6SGFL#30 is available at Aetrix Electronics and suitable for industrial weigh scales, RTD temperature controllers, strain gauge load monitoring, and power quality analyzers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F523E6SGFL#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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT applications.

The RX23E-A Group - including R5F523E6SGFL#30 - was designed specifically for high-accuracy industrial sensor signal conditioning, integrating precision analog front ends with robust MCU capabilities to replace multi-chip sensor interface solutions.

FAQ

What is the maximum effective resolution achievable with the R5F523E6SGFL#30's delta-sigma ADCs?

The R5F523E6SGFL#30 achieves up to 23-bit effective resolution at 7.6 SPS with gain = 1 and output data rate configured for normal mode. This specification is measured under defined conditions (AVCC0 = 5.0 V, PGA bypassed, sinc filter enabled) and documented in Renesas R01DS0330EJ0130 Rev.1.30, Page 4. The R5F523E6SGFL#30 maintains this resolution across its full –40°C to +105°C operating range due to on-chip offset/gain calibration and low-drift voltage reference.

Does the R5F523E6SGFL#30 support simultaneous sampling across both delta-sigma ADC units?

Yes, the R5F523E6SGFL#30 supports inter-unit synchronized A/D conversion start via hardware trigger - either through software command or Event Link Controller (ELC) event. This capability is explicitly confirmed in the "24-bit delta-sigma A/D converter" section of R01DS0330EJ0130 Rev.1.30, Page 4, enabling true simultaneous acquisition for multi-sensor systems like 3-phase current monitoring. The R5F523E6SGFL#30 uses dedicated synchronization logic to align DSAD0 and DSAD1 conversion timing within one modulator clock cycle.

What excitation current source configurations are supported by the R5F523E6SGFL#30?

The R5F523E6SGFL#30 provides four independent excitation current sources (IEXC0–IEXC3) with programmable output levels: 50, 100, 250, 500, 750, and 1000 µA. Current matching is ±0.2% and drift matching is 5 ppm/°C, as verified in the Analog Front End section (Page 5). These sources can be routed to AINx pins via the analog multiplexer, supporting 2-, 3-, and 4-wire RTD configurations. The R5F523E6SGFL#30 does not support dynamic current switching during conversion - configuration is static per measurement sequence.

Is the R5F523E6SGFL#30 pin-compatible with other RX23E-A group MCUs in the same package?

Yes, the R5F523E6SGFL#30 is fully pin-compatible with all other 48-pin LFQFP variants in the RX23E-A Group (e.g., R5F523E6ADFL#30, R5F523E6SDFL#30), sharing identical pin assignments, electrical characteristics, and peripheral mapping per Table 1.2 and Figure 1.4 in R01DS0330EJ0130 Rev.1.30. This allows direct substitution in existing designs when upgrading temperature grade or adjusting DSAD channel count, provided firmware accounts for functional differences (e.g., single vs. dual DSAD units).

How does the R5F523E6SGFL#30 support IEC60730 Class B compliance?

The R5F523E6SGFL#30 integrates multiple hardware-assisted diagnostics required for IEC60730 Class B: A/D converter self-test (offset/gain error detection), clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and analog input disconnect detection. These features are detailed in the "Useful functions for IEC60730 compliance" section (Page 1) and enable systematic fault coverage without significant CPU overhead. The R5F523E6SGFL#30 implements these per Renesas' certified functional safety documentation, not as generic MCU features.