Renesas R5F523E5ADFL#10

Overview

R5F523E5ADFL#10 from Renesas is a 32-bit RXv2 microcontroller 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 ×2, gain = 1–128), 2.5 V low-drift voltage reference (10 ppm/°C), four excitation current sources (50–1000 µA), and integrated CAN 2.0B interface. It operates at up to 32 MHz with 128 KB flash, 16 KB SRAM, and 8 KB data flash, targeting thermocouple and RTD measurement systems in industrial process control.

For engineers reviewing the R5F523E5ADFL#10 datasheet, R5F523E5ADFL#10 pinout, R5F523E5ADFL#10 application, or R5F523E5ADFL#10 equivalent, this MCU delivers verified 23-bit effective resolution at 7.6 SPS, simultaneous 50/60 Hz rejection, ±0.2% excitation current matching, 10 Ω low-side switch on-resistance, and IEC60730-compliant self-diagnostic support for A/D, clock accuracy, and RAM testing.

Technical Context

The R5F523E5ADFL#10 integrates two independent 24-bit delta-sigma A/D converters with fourth-order sinc filters, each supporting six differential inputs and programmable data rates (1.9–15625 SPS). Its analog front end includes a 2.5 V voltage reference (±10 ppm/°C drift), bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2), and four matched excitation current sources (±0.2% matching, ±5 ppm/°C drift).

Digital subsystems include a 32-bit RXv2 CPU core (64 DMIPS @ 32 MHz), FPU compliant with IEEE754 single-precision, memory protection unit (MPU), event link controller (ELC) for interrupt-free peripheral coordination, and a dedicated CAN module (ISO11898-1, up to 1 Mbps) with 16 message boxes - all operating across –40°C to +85°C in 48-pin LFQFP (PLQP0048KB-B, 7 × 7 mm, 0.5 mm pitch).

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm, 0.5 mm pitch, exposed pad (thermal pad not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F523E5ADFL#10, R5F523E6ADFL#30 offers expanded memory for advanced algorithms but identical analog performance and package; ADS131M04IPBSR provides higher channel density but demands full external system design, increasing BOM count and validation scope.

Availability

R5F523E5ADFL#10 is available at Aetrix Electronics and suitable for industrial temperature transmitters, smart RTD sensor nodes, thermocouple measurement modules, and power quality analyzer front-ends requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F523E5ADFL#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 IoT applications.

The RX23E-A Group is designed specifically for high-accuracy sensor signal acquisition - integrating precision analog front ends, real-time processing, and functional safety features into a single chip for industrial measurement systems.

FAQ

What is the maximum effective resolution of the R5F523E5ADFL#10's delta-sigma ADC at 7.6 SPS?

The R5F523E5ADFL#10 achieves up to 23-bit effective resolution at 7.6 SPS in normal mode with gain = 1, as confirmed in the datasheet (R01DS0330EJ0130, Page 1, "Analog functions"). This specification applies to both DSAD0 and DSAD1 units and includes on-chip offset and gain error calibration. The value reflects measured ENOB under specified conditions - not theoretical bit depth.

Does the R5F523E5ADFL#10 support simultaneous sampling across both 24-bit delta-sigma ADC units?

Yes, the R5F523E5ADFL#10 supports inter-unit A/D conversion synchronized start via software or ELC-triggered events, enabling deterministic phase alignment between DSAD0 and DSAD1. This capability is explicitly documented in the "Analog functions" section (R01DS0330EJ0130, Page 1) and is essential for coherent voltage/current acquisition in power monitoring applications.

What excitation current matching accuracy does the R5F523E5ADFL#10 guarantee across its four IEXC channels?

The R5F523E5ADFL#10 guarantees ±0.2% current matching between its four excitation current sources (IEXC0–IEXC3) and ±5 ppm/°C drift matching, as stated in the "Analog functions" feature list (R01DS0330EJ0130, Page 1). This matching enables high-accuracy 4-wire RTD measurements without per-channel calibration.

Can the R5F523E5ADFL#10 operate with a 1.8 V supply voltage?

Yes, the R5F523E5ADFL#10 supports operation from 1.8 V to 5.5 V, but maximum CPU frequency is reduced to 8 MHz at 1.8–2.4 V supply (R01DS0330EJ0130, Page 5, "Power supply voltages/Operating frequencies"). Full 32 MHz operation requires VCC ≥ 2.7 V. Analog peripherals (e.g., DSAD, S12AD) remain functional down to 1.8 V when AVCC0 ≥ 2.7 V.

Is the R5F523E5ADFL#10 pin-compatible with other RX23E-A group members in the same package?

No - the R5F523E5ADFL#10 uses the 48-pin LFQFP (PLQP0048KB-B) package and shares pin assignments with other 48-pin RX23E-A variants (e.g., R5F523E6ADFL#30), but functional pin mapping differs across memory/configurations. For example, SCIh (SCI12) and certain MTU pins are reserved or unused in R5F523E5ADFL#10 per Table 1.2 (R01DS0330EJ0130, Page 6). Pin compatibility must be verified per specific variant.