Renesas R5F51105ADFM#10

Overview

R5F51105ADFM#10 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 128 Kbytes of on-chip flash memory, 16 Kbytes of SRAM, a 12-bit A/D converter with 14 channels, RTC, and five communication interfaces (SCI×3, RIIC×1, RSPI×1). It targets low-power embedded control in industrial sensors and smart metering.

For engineers reviewing the R5F51105ADFM#10 datasheet, R5F51105ADFM#10 pinout, R5F51105ADFM#10 application, or R5F51105ADFM#10 equivalent, key selection criteria include its −40°C to +85°C temperature grade, PLQP0064KB-A 64-pin LFQFP package, 1.8–3.6 V supply range, software standby mode (0.35 μA), and IEC 60730-compliant safety features.

Technical Context

The R5F51105ADFM#10 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its on-chip clock system integrates high-speed (32 MHz ±1%), sub-clock (32.768 kHz), and IWDT-dedicated (15 kHz) oscillators with CAC for frequency accuracy monitoring.

Peripheral integration includes a 4-channel MTU2 timer with input capture/output compare, 2-channel CMT, independent watchdog timer (IWDT), and data transfer controller (DTC) supporting chain transfers triggered by 65 interrupt sources - all synchronized to configurable ICLK/PCLK/FCLK domains.

Key Specifications

Pinout & Package

Package: PLQP0064KB-A - 64-pin Low-Profile Quad Flat Package, 10 mm × 10 mm body, 0.5 mm lead pitch, exposed pad not specified, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit MCU applications.

Compared with R5F51105AGFM#30, the R5F51105ADFM#10 trades extended temperature range for lower cost in standard environments; compared with R5F51104ADFM#30, it provides 32 Kbytes additional flash for field-upgradable features or enhanced security stacks without layout change.

Availability

R5F51105ADFM#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and home appliance control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F51105ADFM#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX110 Group, including the R5F51105ADFM#10, was designed for cost-sensitive, low-power embedded control applications demanding functional safety, rich analog integration, and compact code density in industrial and consumer equipment.

FAQ

What is the maximum operating frequency and associated performance of the R5F51105ADFM#10?

The R5F51105ADFM#10 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. This requires a supply voltage ≥2.7 V; at 1.8–2.4 V, max frequency is limited to 8 MHz. The RX CPU core achieves single-cycle instruction execution for many operations, supported by a five-stage pipeline and 32-bit multiplier/divider.

Does the R5F51105ADFM#10 support hardware debugging, and what interface is used?

Yes, the R5F51105ADFM#10 includes an on-chip debugging circuit compliant with the FINE interface standard. It supports real-time trace, breakpoints, and memory inspection via the FINED pin, enabling full-featured development with Renesas E1/E2 emulators without requiring external debug probes or JTAG adapters.

How many communication interfaces does the R5F51105ADFM#10 integrate, and what protocols are supported?

The R5F51105ADFM#10 integrates five communication channels: three SCI modules (SCI1, SCI5, SCIf12) supporting asynchronous, clock-synchronous, and simple I2C/SPI modes; one RIIC module for standard/fast-mode I2C (400 kbps) and SMBus; and one RSPI module supporting master SPI up to 16 Mbps with four slave-select outputs (SSLA0–SSLA3).

What low-power modes are available on the R5F51105ADFM#10, and what is the lowest current consumption?

The R5F51105ADFM#10 offers three low-power modes: sleep, deep sleep, and software standby. In software standby mode, current consumption drops to 0.35 μA typical, with 4.8 μs wake-up time. This mode retains SRAM content and allows wake-up via RTC alarm, external interrupt, or LVD event - ideal for battery-critical applications.

Is the R5F51105ADFM#10 qualified for functional safety standards, and which features support compliance?

Yes, the R5F51105ADFM#10 includes on-chip functions aligned with IEC 60730 Class B requirements, including a clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, RAM test assist logic, and dual-level voltage detection (LVDA). These features enable certified safety firmware implementation without external components.