Renesas R5F51303ADFK#30

Overview

R5F51303ADFK#30 from Renesas Electronics 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, and 8 KB data flash. It integrates a 12-bit A/D converter (14 channels), two 8-bit D/A channels, capacitive touch sensing (32 keys), RTC, low-power timer, and multiple communication interfaces including SCI, I²C, and RSPI - deployed in industrial control panels requiring deterministic real-time response and low-voltage operation.

For engineers reviewing the R5F51303ADFK#30 datasheet, R5F51303ADFK#30 pinout, R5F51303ADFK#30 application, or R5F51303ADFK#30 equivalent, key selection criteria include its LQFP-64 (PLQP0064GA-A, 14×14 mm, 0.8 mm pitch) package, –40°C to +85°C temperature grade, 1.8–5.5 V single-supply operation, and IEC60730-compliant self-test features for safety-critical embedded systems.

Technical Context

The R5F51303ADFK#30 implements the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions - enabling 1-instruction-per-cycle execution and 64-bit accumulator support for DSP-intensive tasks. Its clock system includes high-speed on-chip oscillator (32 MHz ±1%), PLL, sub-clock (32.768 kHz), and CAC for frequency accuracy validation.

Peripheral integration centers on event-driven operation: ELC enables interrupt-free inter-module triggering (e.g., MTU → A/D start), DTC supports four transfer modes with chain capability, and MPC allows flexible pin function assignment across 52 GPIOs. The device lacks REMC and full RTC support per Table 1.2 for 64-pin LQFP packages.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not specified. Complies with JEDEC MS-026 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51303ADFK#30, R5F51303ADFM#30 offers identical functionality in a smaller 0.5 mm pitch package requiring tighter layout tolerances, while R5F51305ADFK#30 provides scalable memory headroom with zero hardware modification - making it the preferred choice for long-lifecycle industrial products needing field-upgradable firmware.

Availability

R5F51303ADFK#30 is available at Aetrix Electronics and suitable for industrial control panels, smart appliance UIs, programmable logic modules, and energy monitoring nodes requiring stable component supply, extended temperature operation, and IEC60730 compliance.

Supply support for R5F51303ADFK#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 analog peripherals, and certified functional safety features in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51303ADFK#30?

The R5F51303ADFK#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 one-instruction-per-cycle execution for deterministic real-time behavior - verified in Renesas' R01DS0273EJ0300 datasheet Section 1.1.

Does the R5F51303ADFK#30 support real-time clock (RTC) functionality?

The R5F51303ADFK#30 does not support RTC functionality. As confirmed in Table 1.2 (Page 5) of the R01DS0273EJ0300 datasheet, RTC is explicitly listed as "Not supported" for all 64-pin LQFP (PLQP0064GA-A) variants including R5F51303ADFK#30 - though the sub-clock oscillator (32.768 kHz) remains available for low-power timer use.

How many analog-to-digital converter (A/D) input channels does the R5F51303ADFK#30 provide?

The R5F51303ADFK#30 integrates a 12-bit SAR A/D converter with 14 usable input channels, selected from the AN000–AN007 and AN016–AN031 pin groups. This count is confirmed in Table 1.2 (Page 5) of the R01DS0273EJ0300 datasheet for the 64-pin LQFP package - fewer than the 24-channel variant in 100-pin versions.

What is the package type and physical footprint of the R5F51303ADFK#30?

The R5F51303ADFK#30 uses the PLQP0064GA-A package: a 64-pin LQFP with 14 × 14 mm body size and 0.8 mm pin pitch. This mechanical specification is defined in Figure 1.1 (Page 8) and Table 1.3 (Page 6) of the R01DS0273EJ0300 datasheet - distinct from the 0.5 mm pitch LFQFP variants like R5F51303ADFM#30.

Which communication interfaces are available on the R5F51303ADFK#30?

The R5F51303ADFK#30 provides three SCI channels (SCI1, SCI5, SCI6), one I²C bus interface (RIICa), and one RSPI channel (RSPIa). These are confirmed in Table 1.2 (Page 5) of the R01DS0273EJ0300 datasheet for the 64-pin LQFP configuration - omitting SCI0, SCI8, SCI9, SCI12, and REMC found in larger-package variants.