Renesas R5F51303AGFN#30

Overview

R5F51303AGFN#30 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 64 KB flash, 10 KB SRAM, 8 KB data flash, 12-bit A/D converter (17 channels), two 8-bit D/A outputs, capacitive touch sensing (36 channels), and IEC60730 compliance for safety-critical industrial control applications.

For engineers reviewing the R5F51303AGFN#30 datasheet, R5F51303AGFN#30 pinout, R5F51303AGFN#30 application, or R5F51303AGFN#30 equivalent, key selection criteria include its 80-pin LFQFP package, –40°C to +105°C temperature grade, integrated RTC (not supported in 48-pin variants), and ELC-driven low-power peripheral coordination without CPU wake-up.

Technical Context

The R5F51303AGFN#30 implements the RXv1 core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code. It integrates an Event Link Controller (ELC) that routes 47 event signals directly between peripherals-such as MTU2 timers triggering A/D conversion-enabling autonomous operation during CPU sleep.

Its clock system includes a high-speed on-chip oscillator (32 MHz ±1%), PLL (4–8 MHz input), sub-clock (32.768 kHz), and dedicated IWDT oscillator (15 kHz), with independent clock domains for ICLK (CPU/system), PCLKB (peripherals), and FCLK (flash). The CAC circuit validates clock accuracy for functional safety compliance.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-Profile Quad Flat Package, 12 × 12 mm body, 0.5 mm pitch, exposed pad (thermal enhancement).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51303AGFN#30, the D-grade R5F51303ADFN#30 reduces thermal margin but lowers unit cost, while the R5F51305AGFN#30 adds 64 KB flash and 6 KB SRAM-enabling richer firmware features without changing PCB layout or thermal design.

Availability

R5F51303AGFN#30 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, and medical device subsystems requiring stable component supply, long-term lifecycle assurance, and extended temperature operation.

Supply support for R5F51303AGFN#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 industrial and consumer applications-delivering high integration (touch, A/D, RTC, safety features) in compact packages with robust low-power operation.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51303AGFN#30?

The R5F51303AGFN#30 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RXv1 32-bit CPU core uses a 5-stage pipeline and variable-length instruction set to achieve high code density and efficiency. Performance is sustained across the full voltage range (1.8–5.5 V) with no wait states on flash or SRAM access, making it suitable for deterministic real-time control tasks in the R5F51303AGFN#30.

Does the R5F51303AGFN#30 support real-time clock (RTC) functionality?

Yes, the R5F51303AGFN#30 includes a hardware RTC module with calendar count mode or binary count mode, alarm and periodic interrupts, and 30-second/leap-year/error adjustment. It uses the 32.768 kHz sub-clock oscillator as its timebase and is fully operational in the 80-pin LFQFP package (PLQP0080KB-B). RTC is not available in 48-pin variants, confirming its presence in the R5F51303AGFN#30.

How many capacitive touch channels does the R5F51303AGFN#30 support, and what configurations are available?

The R5F51303AGFN#30 integrates a Capacitive Touch Sensing Unit (CTSUa) supporting up to 36 touch channels. It operates in self-capacitance mode (one pin per key) or mutual-capacitance matrix mode (36 pins supporting up to 324 keys). All 36 TSx pins are accessible in the 80-pin package, and the CTSU includes built-in noise suppression and auto-calibration-key capabilities confirmed for the R5F51303AGFN#30 in the official datasheet.

What low-power modes are available on the R5F51303AGFN#30, and what is the lowest supply current?

The R5F51303AGFN#30 offers three low-power consumption modes: Sleep, Deep Sleep, and Software Standby. In Software Standby mode, supply current drops to 0.37 µA while the Low Power Timer (LPT) remains active using the sub-clock or IWDT oscillator. Recovery time from this state is 4.8 µs, enabling rapid response to external events-critical for battery-operated systems using the R5F51303AGFN#30.

Is the R5F51303AGFN#30 qualified for functional safety standards like IEC 60730?

Yes, the R5F51303AGFN#30 includes dedicated hardware and firmware-assist features for IEC 60730 Class B compliance, including self-diagnostic A/D converter, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT), RAM test support via Data Operation Circuit (DOC), and analog input disconnection detection. These features are documented in the R5F51303AGFN#30 datasheet and enable certified safety firmware implementation without external supervision circuits.