Renesas R5F523E6BGFM#10

Overview

R5F523E6BGFM#10 from Renesas is a 32-bit RXv2 microcontroller optimized for high-precision industrial analog sensing, featuring a 24-bit delta-sigma ADC with 125 kSPS sampling rate, ±5-V analog input range, 256 KB on-chip flash, 32 KB SRAM, and integrated excitation current sources - deployed in load cell signal conditioning, weigh scale front-ends, and precision sensor interface modules.

For engineers reviewing the R5F523E6BGFM#10 datasheet, R5F523E6BGFM#10 pinout, R5F523E6BGFM#10 application, or R5F523E6BGFM#10 equivalent, key selection criteria include its 64-pin LFQFP package (PLQP0064KB-C), 32 MHz max CPU frequency, 125 kSPS delta-sigma ADC performance at ±5 V input, CAN 2.0B compliance, and IEC60730 safety support for Class B certification.

Technical Context

The R5F523E6BGFM#10 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 5-stage Harvard pipeline, and memory protection unit - enabling deterministic real-time control of analog acquisition and digital signal processing tasks. Its clock system integrates PLL, sub-clock (32.768 kHz), and dedicated IWDT oscillator to synchronize DSAD (PCLKC ≤ 16 MHz), S12AD (PCLKD ≤ 32 MHz), and MTU2a (PCLKA ≤ 32 MHz) domains independently.

It embeds dual A/D subsystems: a 24-bit delta-sigma converter (DSADB) with fourth/fifth-order sinc filtering, programmable gain instrumentation amplifier (×1–×128), and ±5-V HVAIN inputs; plus an 8-channel 12-bit SAR ADC (S12ADE) with 1.4 µs conversion time. The analog front end includes two 50–1000 µA excitation current sources with ±0.2% matching and bias voltage generator (VBIAS = (AVCC0 + AVSS0)/2).

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin Low-Profile Quad Flat Package, 10 × 10 mm body, 0.5 mm lead pitch, exposed 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 R5F523E5BGFM#10, the R5F523E6BGFM#10 provides double flash/RAM for complex calibration algorithms and firmware updates; versus R5F523E6JGFP#10, it reduces footprint and cost by omitting LCD hardware while retaining full analog acquisition capability.

Availability

R5F523E6BGFM#10 is available at Aetrix Electronics and suitable for industrial weigh scales, bridge sensor conditioners, energy meter auxiliary monitoring, and process loop monitors requiring stable component supply across extended temperature ranges.

Supply support for R5F523E6BGFM#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-B Group targets high-accuracy industrial sensing, integrating precision delta-sigma ADCs, excitation sources, and functional safety features into scalable 32-bit MCUs for weigh scale, metering, and process control systems.

FAQ

What is the maximum sampling rate of the 24-bit delta-sigma ADC in R5F523E6BGFM#10?

The R5F523E6BGFM#10 supports up to 125 kSPS on its 24-bit delta-sigma ADC (DSADB) when operating with fMOD = 4 MHz. This maximum rate applies to the ±5-V input configuration (denoted by 'B' in the part number). At lower data rates (e.g., 3.8 SPS), effective resolution reaches 24 bits with sinc5 filtering and simultaneous 50/60 Hz rejection.

Does R5F523E6BGFM#10 include an LCD controller?

No, R5F523E6BGFM#10 does not include an LCD controller. The 'B' suffix in the part number explicitly indicates "LCD driver not included". This distinguishes it from variants like R5F523E6JGFP#10 ('J' = LCD included). The R5F523E6BGFM#10 is optimized for compact, analog-intensive applications where display functionality is handled externally or omitted.

What analog input voltage range is supported by R5F523E6BGFM#10?

R5F523E6BGFM#10 supports ±5 V on its HVAIN pins, as confirmed by the 'B' variant designation in Table 1.3 and Figure 1.1. While the DSADB analog front end can accept up to ±10 V with external scaling, the device's rated HVAIN input range is ±5 V. For ±10 V direct connection, the 'K' or 'L' variants (e.g., R5F523E6KGFM#10) must be selected.

How many excitation current sources does R5F523E6BGFM#10 integrate?

R5F523E6BGFM#10 integrates two fully programmable excitation current sources (IEXC0 and IEXC1), each configurable from 50 µA to 1000 µA in discrete steps. These sources feature ±0.2% current matching and 5 ppm/°C drift matching - critical for precision Wheatstone bridge biasing in load cell and pressure sensor interfaces.

Is R5F523E6BGFM#10 qualified for extended temperature operation?

Yes, R5F523E6BGFM#10 is rated for –40°C to +105°C operation, indicated by the 'G' in the part number per Figure 1.1. This extended temperature grade meets requirements for industrial environments such as factory automation, outdoor metering, and process control cabinets where ambient temperatures exceed standard commercial limits.