Renesas R5F51405BDFK#30

Overview

R5F51405BDFK#30 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 128 KB flash, 32 KB SRAM, on-chip FPU, 12-bit A/D converter (15 channels), two 8-bit D/A channels, CAN interface (ISO 11898-1, 1 Mbps), and hardware AES encryption. It targets industrial control panels requiring real-time responsiveness, secure firmware updates, and capacitive touch HMI.

For engineers reviewing the R5F51405BDFK#30 datasheet, R5F51405BDFK#30 pinout, R5F51405BDFK#30 application, or R5F51405BDFK#30 equivalent, this page delivers verified specifications, package mapping to PLQP0064GA-A (14 × 14 mm, 0.8 mm pitch), functional pin roles, IEC60730-compliant safety features, and validated alternative parts for supply continuity and design flexibility.

Technical Context

The R5F51405BDFK#30 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling 204 CoreMark at 48 MHz. Its on-chip FPU complies with IEEE-754 single-precision, and the 32-bit divider executes in two clock cycles.

It integrates event-driven peripheral coordination via ELC, allowing timer-triggered A/D conversion or CAN transmission without CPU intervention. The CTSU2SL capacitive touch unit supports up to 32 self-capacitance keys and operates during software standby using the low-power timer (LPTa) and sub-clock oscillator.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not specified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F51405BDFK#30, R5F51405ADFK#30 removes cryptographic acceleration but retains identical real-time performance and I/O count, while R5F51406BDFK#30 doubles flash/SRAM capacity-making it ideal for feature-rich gateways where code growth is anticipated.

Availability

R5F51405BDFK#30 is available at Aetrix Electronics and suitable for industrial control panels, smart home gateways, medical patient monitors, and energy metering terminals requiring stable component supply across extended product lifecycles.

Supply support for R5F51405BDFK#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, and power solutions for automotive, industrial, and IoT markets.

The RX140 Group is designed for cost-optimized, safety-aware industrial and consumer applications-emphasizing low-power operation, IEC60730 compliance, and integrated human-machine interface capabilities like capacitive touch and secure firmware updates.

FAQ

What is the maximum operating frequency and core type of the R5F51405BDFK#30?

The R5F51405BDFK#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz. It achieves 204 CoreMark at that speed and includes an on-chip FPU compliant with IEEE-754 single-precision. The core uses CISC Harvard architecture with a 5-stage pipeline and variable-length instructions, enabling high code density and deterministic real-time execution. This makes the R5F51405BDFK#30 well-suited for applications demanding both computational throughput and low-latency response.

Does the R5F51405BDFK#30 include hardware encryption capabilities?

Yes, the R5F51405BDFK#30 includes a hardware Advanced Encryption Standard accelerator (AESA) supporting 128-bit and 256-bit keys in ECB, CBC, and CTR modes, plus a True Random Number Generator (RNGA). These modules are enabled by the "B" in the part number and are absent in "A" variants like R5F51405ADFK#30. The AESA completes 128-bit encryption in 176 cycles, significantly accelerating secure boot and OTA firmware updates compared to software-only implementations.

What package type and pin count does the R5F51405BDFK#30 use?

The R5F51405BDFK#30 uses the PLQP0064GA-A package: a 64-pin LQFP with 14 × 14 mm body size and 0.8 mm pin pitch. This matches the "FK" suffix in the part number per Renesas' naming convention. It provides 53 general-purpose I/O pins, including 32 dedicated CTSU2SL touch inputs, and supports 5-V-tolerant inputs on selected pins. The package is RoHS-compliant and designed for reflow soldering in industrial-grade assembly processes.

How many analog-to-digital converter channels does the R5F51405BDFK#30 support?

The R5F51405BDFK#30 integrates a 12-bit S12ADE A/D converter with 15 external input channels and one internal channel (temperature sensor), totaling 16 usable channels. This count is specific to the 64-pin LQFP variant (FK package); higher-pin-count versions offer up to 18 channels. Each channel supports programmable sampling time, conversion result comparison, and analog input disconnection detection-critical for IEC60730 Class B compliance in safety-critical systems.

Is CAN communication supported on the R5F51405BDFK#30, and what standard does it comply with?

Yes, the R5F51405BDFK#30 includes one CAN module (RSCAN) compliant with ISO 11898-1 for standard and extended frames, supporting bit rates up to 1 Mbps. It provides 16 mailboxes for flexible message filtering and prioritization. The CAN interface requires external physical-layer transceivers (e.g., TJA1042 or SN65HVD230) and is fully integrated with the ELC for event-triggered transmission-enabling deterministic network response without CPU intervention. This makes the R5F51405BDFK#30 suitable for industrial automation and building control networks.