Renesas R5F51306BGFK#30

Overview

R5F51306BGFK#30 from Renesas is a 32-bit RX CPU-based microcontroller in the RX130 Group, operating at up to 32 MHz (50 DMIPS), with 256 KB on-chip flash, 32 KB SRAM, and 8 KB data flash. It integrates a 12-bit A/D converter (14 channels), two 8-bit D/A outputs, capacitive touch sensing (32 channels), RTC, low-power timer, and IEC60730-compliant safety features for industrial control panels and appliance HMI systems.

For engineers reviewing the R5F51306BGFK#30 datasheet, R5F51306BGFK#30 pinout, R5F51306BGFK#30 application, or R5F51306BGFK#30 equivalent, key selection criteria include its LQFP-64 (0.8 mm pitch) package, –40°C to +105°C temperature grade, 1.8–5.5 V single-supply operation, and integrated CTSU supporting mutual capacitance matrix up to 324 keys.

Technical Context

The R5F51306BGFK#30 implements the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling 50 DMIPS at 32 MHz. It supports little-endian instruction/data layout and includes a 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations.

Its clock system integrates high-speed (32 MHz ±1%) and low-speed (15 kHz IWDT-dedicated) on-chip oscillators, PLL, sub-clock (32.768 kHz), and CAC for real-time clock accuracy validation. Power management includes software standby mode (0.37 µA) with 4.8 µs wake-up and three low-power modes coordinated via ELC and DTC.

Key Specifications

Pinout & Package

LQFP-64 (PLQP0064GA-A), 14 × 14 mm body, 0.8 mm pitch, exposed pad not present, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51306BGFK#30, the R5F51306ADFK#30 reduces thermal margin but lowers unit cost, while the R5F51307BGFK#30 increases memory headroom and analog channel count-both retain identical LQFP-64 pin compatibility and peripheral feature set.

Availability

R5F51306BGFK#30 is available at Aetrix Electronics and suitable for industrial HMI terminals, smart appliance control panels, and medical device front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F51306BGFK#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 automotive, industrial, and IoT markets.

The RX130 Group targets cost-sensitive, safety-aware embedded applications-delivering high-performance 32-bit processing, integrated capacitive touch, and IEC60730-ready hardware features in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51306BGFK#30?

The R5F51306BGFK#30 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance using the 32-bit RXv1 CPU core. Its 5-stage pipeline, variable-length instruction set, and single-cycle 32×32 multiply-accumulate capability enable efficient real-time control. The R5F51306BGFK#30 achieves this performance across its full –40°C to +105°C operating range with no derating required.

Does the R5F51306BGFK#30 support capacitive touch sensing, and how many channels are available?

Yes, the R5F51306BGFK#30 integrates a dedicated Capacitive Touch Sensing Unit (CTSU) supporting up to 32 physical touch pins. In mutual capacitance configuration, it enables matrix layouts supporting up to 324 keys. The R5F51306BGFK#30 provides hardware-accelerated scanning, noise filtering, and automatic drift compensation-eliminating the need for external touch controllers in HMI designs.

What are the memory resources included in the R5F51306BGFK#30?

The R5F51306BGFK#30 includes 256 KB of on-chip flash memory (zero-wait-state at 32 MHz), 32 KB of SRAM, and 8 KB of data flash rated for 1,000,000 program/erase cycles. All memory blocks support background operation (BGO), allowing code execution during flash reprogramming. The R5F51306BGFK#30 also features a 32-byte unique ID for secure device identification and firmware binding.

How does the R5F51306BGFK#30 support functional safety standards like IEC60730?

The R5F51306BGFK#30 includes hardware-assisted safety features for Class B compliance: a Data Operation Circuit (DOC) for RAM integrity checking, Clock Accuracy Measurement (CAC) circuit for oscillator validation, Independent Watchdog Timer (IWDT) with dedicated 15 kHz oscillator, and A/D self-diagnostic functions. These capabilities reduce software overhead and accelerate certification. The R5F51306BGFK#30 documentation provides ready-to-use safety libraries and diagnostic coverage reports.

What communication interfaces are available on the R5F51306BGFK#30, and which packages support them?

The R5F51306BGFK#30 supports up to 7 SCI channels (including LIN-capable SCI12), one I²C bus interface (RIIC), one RSPI port (16 Mbps), and one simple I²C/SPI mode per SCI channel. All are available in the LQFP-64 (PLQP0064GA-A) package used by R5F51306BGFK#30. Pin mapping is fully documented in Table 1.4 and Figure 1.5 of the R01DS0273EJ0300 datasheet, confirming SCI0/SCI1/SCI5/SCI6/SCI8/SCI9/SCI12, RIIC0, and RSPIA functionality in this variant.