Renesas R5F51306BGNE#20

Overview

R5F51306BGNE#20 from Renesas Electronics is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 256 KB on-chip flash, 32 KB SRAM, 8 KB data flash, 12-bit A/D converter (17 channels), dual 8-bit D/A outputs, capacitive touch sensing (24 keys), RTC, and IEC60730-compliant safety functions - deployed in industrial HMI and consumer appliance control systems.

For engineers reviewing the R5F51306BGNE#20 datasheet, R5F51306BGNE#20 pinout, R5F51306BGNE#20 application, or R5F51306BGNE#20 equivalent, key selection criteria include its HWQFN-48 package with 0.5 mm pitch, –40°C to +105°C extended temperature rating, 1.8–5.5 V single-supply operation, low-power software standby mode (0.37 µA), and integrated event link controller (ELC) for CPU-off peripheral coordination.

Technical Context

The R5F51306BGNE#20 implements the RXv1 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It integrates a dedicated 15 kHz IWDT oscillator, clock frequency accuracy measurement circuit (CAC), and independent LPT running during software standby using sub-clock or IWDTCLK.

Its peripheral set includes MTU2 (6-channel 16-bit timer with complementary PWM), SCIg (3 channels), RIIC (1 channel, up to 400 kbps), RSPI (1 channel, up to 16 Mbps), REMC (2 channels, 4-pattern matching), and CTSU supporting mutual capacitance matrix configuration - all coordinated via ELC without CPU intervention.

Key Specifications

Pinout & Package

PWQN0048KB-A is a 48-pin HWQFN (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad, rated for –40°C to +105°C operation. Pin functions are validated per Renesas R01DS0273EJ0300 Rev.3.00, Table 1.4 and Figure 1.7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51306ADNE#U0 and R5F51306BGFL#30, the R5F51306BGNE#20 uniquely combines extended temperature operation (–40°C to +105°C), HWQFN thermal performance, and chip version B production status - making it optimal for high-reliability, thermally demanding embedded designs requiring long-term supply continuity.

Availability

R5F51306BGNE#20 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, battery-powered sensor nodes, and medical UI modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F51306BGNE#20 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX130 Group targets cost-sensitive, safety-aware embedded applications requiring rich analog integration, capacitive touch, and IEC60730 compliance - optimized for appliances, industrial controls, and medical devices.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51306BGNE#20?

The R5F51306BGNE#20 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. Its RXv1 32-bit CPU core features a 5-stage pipeline, variable-length instructions, and hardware multiplier/divider - enabling deterministic real-time execution in motor control and sensor fusion applications. The R5F51306BGNE#20 achieves this performance across its full 1.8–5.5 V supply range when VCC ≥ 2.7 V.

Does the R5F51306BGNE#20 support capacitive touch sensing, and how many keys can it handle?

Yes, the R5F51306BGNE#20 integrates a Capacitive Touch Sensing Unit (CTSU) supporting up to 24 dedicated touch pins (TS0–TS23). In mutual-capacitance mode, it enables matrix configurations for up to 576 keys (24 × 24); in self-capacitance mode, it supports 24 independent keys. The R5F51306BGNE#20 requires no external RC components and includes built-in noise cancellation and auto-calibration - validated per Renesas Application Note R01AN2379JJ0100.

What low-power modes does the R5F51306BGNE#20 offer, and what is its lowest supply current?

The R5F51306BGNE#20 provides three low-power modes: Sleep, Deep Sleep, and Software Standby. In Software Standby mode, it draws just 0.37 µA while maintaining RTC operation and enabling wake-up via LPT, external interrupt, or ELC event. Recovery time from this state is 4.8 µs. The R5F51306BGNE#20 also supports dynamic voltage scaling with high/middle/low-speed operating modes to optimize µA/MHz efficiency.

Is the R5F51306BGNE#20 qualified for functional safety standards like IEC60730?

Yes, the R5F51306BGNE#20 includes hardware-assisted IEC60730 Class B compliance features: A/D converter self-diagnostic, RAM test assistance using the Data Operation Circuit (DOC), clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, and analog input disconnection detection. These capabilities are documented in the R5F51306BGNE#20 datasheet R01DS0273EJ0300 and supported by Renesas' Functional Safety Package.

What package type and pin count does the R5F51306BGNE#20 use, and is it RoHS compliant?

The R5F51306BGNE#20 uses the PWQN0048KB-A package: a 48-pin HWQFN with 7 × 7 mm body, 0.5 mm pitch, and exposed thermal pad. It is lead-free, halogen-free, and RoHS compliant per Renesas' environmental compliance documentation. This package supports high-density PCB layouts and enhanced thermal dissipation compared to equivalent LFQFP variants like R5F51306BGFL#30.