Renesas R5F51303ADFM#30

Overview

R5F51303ADFM#30 from Renesas is a 32-bit RX CPU-based microcontroller in the RX130 Group, operating at up to 32 MHz (50 DMIPS), featuring 64 KB on-chip flash, 10 KB SRAM, 8 KB data flash, and integrated peripherals including 12-bit A/D (17 channels), dual 8-bit D/A, capacitive touch sensing (32 channels), RTC, and IEC60730-compliant safety functions. It targets low-power industrial and consumer control applications requiring robust timing, analog interface, and touch UI.

For engineers reviewing the R5F51303ADFM#30 datasheet, R5F51303ADFM#30 pinout, R5F51303ADFM#30 application, or R5F51303ADFM#30 equivalent, this page delivers verified specifications, package mapping to PLQP0064KB-C (64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch), validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and parametric differences.

Technical Context

The R5F51303ADFM#30 implements a CISC Harvard-architecture RX CPU core with 5-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply operations. Its clock system integrates high-speed (32 MHz ±1%) and sub-clock (32.768 kHz) oscillators, PLL, and CAC for frequency accuracy monitoring.

Peripheral integration includes ELC for event-driven module coordination without CPU wake-up, DTC for interrupt-triggered transfers, MTU2 (6-channel 16-bit timer) with complementary PWM and phase counting, and CTSU supporting mutual-capacitance matrix up to 32 channels - all operating under 1.8–5.5 V supply with software standby current of 0.37 µA.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin Low-Profile Quad Flat Package, 10 × 10 mm body, 0.5 mm pitch, exposed pad (RoHS compliant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51303ADFM#30, R5F51305ADFM#30 offers double flash and SRAM capacity without changing footprint or peripheral functionality, while R5F51303AGFM#30 maintains identical specs but extends thermal reliability - both serve distinct design constraints without requiring PCB revision.

Availability

R5F51303ADFM#30 is available at Aetrix Electronics and suitable for industrial HMI panels, battery-powered sensor nodes, smart thermostat interfaces, and medical device front-ends requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F51303ADFM#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 industrial, automotive, and IoT markets.

The RX130 Group is designed for cost-sensitive, low-power embedded applications demanding rich analog integration, capacitive touch, functional safety support, and seamless migration within the RX family - targeting appliance, sensor, and human-interface systems.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51303ADFM#30?

The R5F51303ADFM#30 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RX CPU core supports single-cycle 32×32 multiplication with a 64-bit accumulator, enabling efficient signal processing and control loop execution. This performance level is sustained across its full 1.8–5.5 V supply range, with frequency scaling tied to VCC voltage per datasheet Table 1.1.

Does the R5F51303ADFM#30 include an integrated real-time clock (RTC)?

No, the R5F51303ADFM#30 does not include an RTC module. Per Table 1.2 in the datasheet, RTC functionality is unavailable in 48-pin and 64-pin packages of the RX130 Group, including the PLQP0064KB-C package used by R5F51303ADFM#30. RTC is only supported in 80-pin and 100-pin variants. Designers requiring timekeeping must implement external RTC or use the low-power timer (LPT) with sub-clock for basic interval timing.

How many capacitive touch channels does the R5F51303ADFM#30 support?

The R5F51303ADFM#30 supports up to 32 capacitive touch sensing channels in mutual-capacitance matrix configuration, as confirmed in Table 1.2 of the datasheet for the 64-pin LFQFP package (PLQP0064KB-C). This enables implementation of multi-button interfaces or sliders without external touch controllers, leveraging the integrated CTSU hardware with built-in noise suppression and auto-calibration.

What are the key low-power capabilities of the R5F51303ADFM#30?

The R5F51303ADFM#30 offers three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.37 µA while retaining SRAM content and allowing wake-up via LPT or external interrupt. The low-power timer (LPT) operates during standby using the sub-clock or IWDT-dedicated oscillator, enabling precise periodic wake-up without full CPU activation - critical for battery-operated sensor nodes.

Is the R5F51303ADFM#30 pin-compatible with other RX130 Group members in the same package?

Yes, the R5F51303ADFM#30 is pin-compatible with other RX130 Group MCUs in the PLQP0064KB-C package (e.g., R5F51305ADFM#30, R5F51306BDFM#30), sharing identical pin assignments and electrical characteristics. This allows direct substitution for memory or feature upgrades without PCB changes, provided peripheral usage aligns with the target part's functional subset as defined in Table 1.2 of the datasheet.