Renesas R5F51406ADFN#30

Overview

R5F51406ADFN#30 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 256 KB on-chip flash, 64 KB SRAM, 8 KB data flash, integrated 12-bit A/D converter (18 channels), dual 8-bit D/A converters, CAN 2.0B module, and capacitive touch sensing unit supporting up to 36 self-capacitance keys - deployed in industrial HMI and sensor node control systems.

For engineers reviewing the R5F51406ADFN#30 datasheet, R5F51406ADFN#30 pinout, R5F51406ADFN#30 application, or R5F51406ADFN#30 equivalent, key selection criteria include its 80-pin LFQFP package with 5-V-tolerant I/O, software standby current of 0.25 µA, 6.2 µs wake-up time from standby, IEEE-754-compliant FPU, and IEC60730 safety support for Class B compliance.

Technical Context

The R5F51406ADFN#30 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions, delivering 204 CoreMark at 48 MHz. It integrates a dedicated low-speed oscillator for IWDT (15 kHz) and supports event-driven operation via ELC, enabling peripheral-to-peripheral linking without CPU intervention.

Its clock system includes HOCO (48 MHz ±1%), sub-clock (32.768 kHz), PLL (4–12 MHz input), and CAC for real-time clock accuracy monitoring. The S12ADE A/D converter achieves 0.67 µs conversion time at 48 MHz ADCLK, with double-trigger mode for motor control and analog input disconnection detection.

Key Specifications

Pinout & Package

Package: 80-pin Low-Profile Quad Flat Package (LFQFP), PLQP0080KB-B, 12 × 12 mm body, 0.5 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51406BDFN#30, the R5F51406ADFN#30 omits hardware crypto but retains identical real-time performance, low-power behavior, and peripheral set; versus R5F51405ADFN#30, it doubles flash and RAM capacity while maintaining pin compatibility and software scalability.

Availability

R5F51406ADFN#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control gateways, and IEC60730-certified appliance controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F51406ADFN#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX140 Group targets cost-optimized, safety-aware embedded applications - combining high-efficiency RXv2 execution, rich analog integration, and IEC60730-ready diagnostics in compact packages.

FAQ

What is the maximum operating frequency and core type of the R5F51406ADFN#30?

The R5F51406ADFN#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz, achieving 204 CoreMark performance. Its Harvard architecture includes a 5-stage pipeline and variable-length instruction set, enabling high code density and deterministic real-time execution critical for industrial control applications. The R5F51406ADFN#30 maintains this performance across its full 1.8–5.5 V supply range.

Does the R5F51406ADFN#30 support CAN communication, and what version is implemented?

Yes, the R5F51406ADFN#30 integrates a single-channel RSCAN module compliant with ISO 11898-1, supporting both standard (11-bit) and extended (29-bit) frame formats at up to 1 Mbps. It includes 16 mailboxes for flexible message filtering and prioritization, and operates independently of the CPU via ELC-triggered transmission. The R5F51406ADFN#30 does not require external transceivers for physical layer interfacing - only an external CAN transceiver is needed.

What are the memory resources available on the R5F51406ADFN#30?

The R5F51406ADFN#30 provides 256 KB of on-chip flash memory (with no-wait access up to 32 MHz), 64 KB of SRAM (no-wait access), and 8 KB of data flash rated for 1,000,000 program/erase cycles. Flash supports on-board programming at 1.8 V, and data flash enables background operation (BGO) for concurrent read/write. The R5F51406ADFN#30 uses these resources for firmware storage, real-time variables, and non-volatile parameter logging without external EEPROM.

How does the R5F51406ADFN#30 handle low-power operation, and what is its standby current?

The R5F51406ADFN#30 offers four low-power modes, including software standby with 0.25 µA typical current consumption at 25°C. In this mode, the low-power timer (LPT) remains active using the sub-clock or dedicated IWDT oscillator, enabling wake-up events without full system restart. Recovery time is 6.2 µs (typ.) when using the 32 MHz HOCO clock source. The R5F51406ADFN#30 achieves this efficiency while retaining SRAM retention and peripheral context.

Is the R5F51406ADFN#30 pin-compatible with other RX140 group MCUs in the same package?

Yes, the R5F51406ADFN#30 in the 80-pin LFQFP (PLQP0080KB-B) package shares identical pinout and electrical characteristics with other RX140 variants in that package, including R5F51405ADFN#30 and R5F51406BDFN#30. All share the same VCC/VSS distribution, I/O voltage tolerance (5 V), and peripheral pin mapping - enabling hardware reuse across memory- or feature-tiered designs. The R5F51406ADFN#30 requires no PCB changes when substituted within this package family.