Renesas R5F51308ADFL#10

Overview

R5F51308ADFL#10 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 512 KB on-chip flash, 48 KB SRAM, 8 KB data flash, 12-bit A/D converter (10 channels), two 8-bit D/A outputs, capacitive touch sensing (24 keys), and IEC60730 compliance for safety-critical industrial control applications.

For engineers reviewing the R5F51308ADFL#10 datasheet, R5F51308ADFL#10 pinout, R5F51308ADFL#10 application, or R5F51308ADFL#10 equivalent, this MCU delivers deterministic real-time performance with low-power operation (0.37 µA in software standby), event-driven peripheral coordination via ELC, and hardware-accelerated CRC and data operation functions - critical for resource-constrained embedded designs requiring functional safety certification.

Technical Context

The R5F51308ADFL#10 implements the 32-bit RXv1 core with Harvard architecture, 5-stage pipeline, and variable-length instructions, enabling single-cycle 32×32-bit multiply and fast interrupt response. It integrates a dedicated low-speed on-chip oscillator (15 kHz) for IWDT and LPT, plus CAC for clock accuracy monitoring - essential for RTC and safety diagnostics.

Its peripheral set includes MTU2 (6-channel 16-bit timer with complementary PWM), SCIg (3 channels), RIIC (1 channel), RSPI (1 channel), REMC (2 channels), and CTSU (24-key capacitive touch) - all accessible via MPC and coordinated by ELC to reduce CPU load during sleep modes.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin LFQFP, 7 mm × 7 mm, 0.5 mm pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51307ADFL#30 and R5F51306BDFL#30, the R5F51308ADFL#10 provides maximum flash (512 KB) and SRAM (48 KB) within the 48-pin LFQFP footprint - enabling larger safety-certified firmware, dual-bank OTA, and extended data logging without changing PCB layout.

Availability

R5F51308ADFL#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control panels, motorized HVAC actuators, and smart power outlets requiring stable component supply and long-term lifecycle support.

Supply support for R5F51308ADFL#10 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-performance 32-bit processing, integrated analog, low-power operation, and built-in functional safety features in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51308ADFL#10?

The R5F51308ADFL#10 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, single-cycle multiply, and ultra-compact instruction set enable deterministic real-time execution - confirmed in Renesas documentation R01DS0273EJ0300. This performance level supports multitasking RTOS environments and complex control algorithms within the R5F51308ADFL#10's resource constraints.

Does the R5F51308ADFL#10 support IEC60730 functional safety compliance?

Yes, the R5F51308ADFL#10 includes hardware-assisted IEC60730 compliance features: self-diagnostic A/D converter, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test support via DOC, and analog input disconnection detection. These are documented in Section 1.1 and Table 1.1 of R01DS0273EJ0300 - enabling certified Class B safety implementations without external supervision circuitry in the R5F51308ADFL#10 design.

How many capacitive touch keys does the R5F51308ADFL#10 support, and what is the implementation method?

The R5F51308ADFL#10 supports up to 24 capacitive touch keys using its integrated CTSU in self-capacitance mode, as specified in Table 1.2 for the 48-pin package. It uses TS0–TS23 pins exclusively for touch sensing, requires only a 10 nF decoupling capacitor on TSCAP, and performs signal processing in hardware - eliminating the need for external touch controllers or firmware-intensive scanning routines in R5F51308ADFL#10-based designs.

What are the memory resources available on the R5F51308ADFL#10?

The R5F51308ADFL#10 integrates 512 KB of on-chip flash memory (no wait states at 32 MHz), 48 KB of SRAM, and 8 KB of data flash rated for 1,000,000 program/erase cycles. The flash supports background operation (BGO), allowing concurrent code execution and firmware updates - a key capability confirmed in Section 1.1 and Table 1.3 of the R5F51308ADFL#10 datasheet R01DS0273EJ0300.

Which communication interfaces are available on the R5F51308ADFL#10, and how many channels does each support?

The R5F51308ADFL#10 provides SCIg (3 channels), RIIC (1 channel), and RSPI (1 channel), as defined in Table 1.2 for the 48-pin LFQFP variant. SCIg supports asynchronous, clock-synchronous, and smart-card modes; RIIC operates up to 400 kbps in Fast Mode; RSPI achieves up to 16 Mbps with 8–32-bit frames. All are accessible via multiplexed pins controlled by MPC - consistent across R5F51308ADFL#10's documented peripheral configuration.