Renesas R5F51306BDFL#50

Overview

R5F51306BDFL#50 from Renesas is a 32-bit RX CPU-based microcontroller with 256 KB flash, 32 KB SRAM, and 8 KB data flash, operating at up to 32 MHz (50 DMIPS), featuring integrated 12-bit A/D converter (10 channels), dual 8-bit D/A outputs, capacitive touch sensing (24 keys), RTC, low-power timer, and IEC60730-compliant safety functions for industrial control and consumer HMI applications.

For engineers reviewing the R5F51306BDFL#50 datasheet, R5F51306BDFL#50 pinout, R5F51306BDFL#50 application, or R5F51306BDFL#50 equivalent, key selection criteria include its 48-pin LFQFP package (PLQP0048KB-B), 1.8–5.5 V single-supply operation, –40 to +85°C temperature grade, and support for event-driven peripheral coordination via ELC without CPU wake-up.

Technical Context

The R5F51306BDFL#50 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions, enabling 1-instruction-per-cycle execution and 64-bit accumulator support for 32×32-bit operations. Its clock system integrates high-speed on-chip oscillator (32 MHz ±1%), sub-clock (32.768 kHz), PLL, and dedicated IWDT oscillator (15 kHz), with independent clock domains for ICLK, PCLKB, and FCLK all configurable up to 32 MHz.

Peripheral coordination is managed by the Event Link Controller (ELC), which routes 47 event signals directly between modules-including MTU2 timers, A/D converter, and REMC-enabling autonomous operation during CPU sleep. The Multi-function Pin Controller (MPC) allows dynamic assignment of up to 38 GPIOs across multiple functions, including 5-V-tolerant inputs and open-drain outputs, while the Data Transfer Controller (DTC) supports normal, repeat, and block transfer modes triggered by interrupts.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin Low-Profile Quad Flat Package, 7 mm × 7 mm body, 0.5 mm lead pitch, exposed pad (thermal enhancement), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51306BDFL#50, R5F51306ADFL#30 offers identical functionality but lacks ongoing manufacturing support, while R5F51305BDFL#30 reduces memory capacity by 50% to lower BOM cost-both retain the same ELC, CTSU, and IEC60730 diagnostic capabilities in the 48-pin form factor.

Availability

R5F51306BDFL#50 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, battery-powered sensor nodes, and medical device interfaces requiring stable component supply, long-term lifecycle assurance, and IEC60730-compliant firmware development support.

Supply support for R5F51306BDFL#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX130 Group, including R5F51306BDFL#50, is engineered for cost-sensitive, safety-aware embedded applications demanding rich analog integration, ultra-low-power operation, and capacitive touch capability in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51306BDFL#50?

The R5F51306BDFL#50 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RXv1 32-bit CPU core features a 5-stage pipeline, variable-length instructions, and a 64-bit accumulator enabling single-cycle 32×32-bit multiply-accumulate operations-critical for real-time control algorithms in the R5F51306BDFL#50.

Which analog peripherals are included in the R5F51306BDFL#50 and how many channels are accessible?

The R5F51306BDFL#50 integrates a 12-bit A/D converter with 10 input channels (AN000–AN007, AN016–AN025), two 8-bit D/A converter outputs (DA0, DA1), one temperature sensor, and two comparator B channels (CMPB0, CMPB1). These are fully supported in the 48-pin LFQFP package and accessible without external multiplexing.

Does the R5F51306BDFL#50 support IEC60730 Class B compliance and what safety features does it include?

Yes, the R5F51306BDFL#50 includes hardware-assisted IEC60730 Class B compliance features: A/D converter self-diagnostic and analog input disconnection detection, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via Data Operation Circuit (DOC), and voltage monitoring with configurable LVD levels.

What is the capacitive touch sensing capability of the R5F51306BDFL#50 and how many keys can it support?

The R5F51306BDFL#50 includes a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 24 independent touch keys in its 48-pin package using the self-capacitance method. Electrodes are assigned to TS0–TS23 pins, requiring no external RC components for basic button detection-enabling rapid HMI development in the R5F51306BDFL#50.

What low-power modes are available on the R5F51306BDFL#50 and what is the lowest achievable current draw?

The R5F51306BDFL#50 supports three low-power modes: Sleep, Deep Sleep, and Software Standby. In Software Standby mode-with Low Power Timer (LPT) active-the device draws just 0.37 µA. Wake-up occurs in 4.8 µs, allowing rapid response to external events while maintaining ultra-low energy consumption in the R5F51306BDFL#50.