Renesas R5F523E5NGFN#50

Overview

R5F523E5NGFN#50 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision analog measurement in industrial sensor nodes and metering systems. It integrates a 24-bit delta-sigma ADC with 31.25 kSPS max sampling rate, ±5-V input range, rail-to-rail programmable gain instrumentation amplifier (gain = 1–128), on-chip excitation current sources (50–1000 µA), and 128 KB flash/16 KB SRAM - all operating at up to 32 MHz.

For engineers reviewing the R5F523E5NGFN#50 datasheet, R5F523E5NGFN#50 pinout, R5F523E5NGFN#50 application, or R5F523E5NGFN#50 equivalent, key selection criteria include its 80-pin LFQFP package, 31.25 kSPS delta-sigma ADC performance, integrated ±5-V analog front end, CAN interface compliance with ISO11898-1, and support for IEC60730 safety diagnostics.

Technical Context

The R5F523E5NGFN#50 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep. Its analog subsystem centers on the DSADB module synchronized to PCLKC (≤16 MHz), featuring fourth- and fifth-order sinc digital filters, simultaneous 50/60 Hz rejection at 10/54 SPS, and offset/gain error calibration.

Digital peripherals include one CAN channel (1 Mbps), six SCIg interfaces (asynchronous/clock-sync/smart card), one RIIC (400 kbps), one RSPI (16 Mbps), four-channel DMAC, and MTU2a with six 16-bit timer channels supporting complementary PWM and phase counting - all mapped to its 80-pin PLQP0080KB-B package with 58 I/O pins (including 4 × 5-V tolerant).

Key Specifications

Pinout & Package

Package: 80-pin Low-Profile Quad Flat Package (LFQFP), PLQP0080KB-B, 12 × 12 mm body, 0.5 mm pitch, exposed pad (thermal 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 R5F523E5JDFN and R5F523E5NDFP, the R5F523E5NGFN#50 delivers optimal balance of analog precision, compact 80-pin packaging, and industrial temperature rating - making it ideal for space-constrained sensor transmitters where LCD or extra I/O are unnecessary.

Availability

R5F523E5NGFN#50 is available at Aetrix Electronics and suitable for industrial flow meters, smart electricity meters, condition monitoring sensor nodes, and PLC analog I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F523E5NGFN#50 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT applications.

The RX23E-B Group - including the R5F523E5NGFN#50 - was designed specifically for high-accuracy sensor signal conditioning in industrial metering and process control, integrating metrology-grade analog peripherals with robust real-time processing and functional safety features.

FAQ

What is the maximum sampling rate supported by the 24-bit delta-sigma ADC in the R5F523E5NGFN#50?

The R5F523E5NGFN#50 supports a maximum delta-sigma ADC sampling rate of 31.25 kSPS. This is confirmed in Table 1.3 of the datasheet for part numbers ending in "N", including R5F523E5NGFN#50. The device also supports lower rates down to 3.8 SPS, with selectable sinc filter configurations enabling simultaneous 50/60 Hz rejection at specific output data rates such as 10 and 54 SPS.

Does the R5F523E5NGFN#50 include an integrated CAN interface, and what standard does it comply with?

Yes, the R5F523E5NGFN#50 includes one CAN module (RSCAN) compliant with ISO11898-1, supporting both standard and extended frames at data rates up to 1 Mbps. The CAN interface operates independently with 16 message boxes and is fully integrated into the ELC and interrupt system, enabling event-triggered transmission and reception without CPU overhead.

What analog input voltage range is supported by the R5F523E5NGFN#50's high-voltage input pins?

The R5F523E5NGFN#50 supports a ±5-V analog input range on its HVAIN pins, as specified for "N"-suffix variants in Table 1.3. This is distinct from "L"/"K" variants which support ±10-V. The ±5-V range is paired with rail-to-rail programmable gain instrumentation amplifiers (gain = 1–128) and internal disconnect/fault detection circuitry for robust industrial sensor interfacing.

How much on-chip flash and SRAM memory does the R5F523E5NGFN#50 provide?

The R5F523E5NGFN#50 integrates 128 KB of on-chip flash memory and 16 KB of SRAM, both accessible with zero wait states at the maximum 32 MHz operating frequency. Additionally, it includes 8 KB of data flash memory rated for 1,000,000 program/erase cycles, supporting background operation (BGO) for firmware updates and parameter storage without halting CPU execution.

Is the R5F523E5NGFN#50 qualified for industrial temperature operation, and what is its specified range?

Yes, the R5F523E5NGFN#50 is qualified for industrial temperature operation with a specified ambient operating range of –40°C to +85°C (D version). This is explicitly defined in Figure 1.1 and Table 1.3 of the datasheet, confirming its suitability for demanding environments such as factory automation, energy metering, and outdoor sensor installations.