Renesas R5F51308ADFM#10

Overview

R5F51308ADFM#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 (17 channels), two 8-bit D/A outputs, capacitive touch sensing (32 keys), RTC, and IEC60730 compliance - deployed in industrial control panels and consumer appliance HMI subsystems.

For engineers reviewing the R5F51308ADFM#10 datasheet, R5F51308ADFM#10 pinout, R5F51308ADFM#10 application, or R5F51308ADFM#10 equivalent, key selection criteria include its 64-pin LFQFP (PLQP0064KB-C) package, 1.8–5.5 V single-supply operation, software standby current of 0.37 µA, and ELC-driven low-power peripheral coordination without CPU wake-up.

Technical Context

The R5F51308ADFM#10 implements a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiplication. Its clock system integrates high-speed (32 MHz ±1%) and sub-clock (32.768 kHz) oscillators, PLL, and CAC for accuracy monitoring.

Peripheral coordination is managed via Event Link Controller (ELC), enabling direct module triggering (e.g., MTU → A/D start) during CPU sleep. The DTC supports four transfer modes with interrupt-source mapping, while MPC enables flexible pin function assignment across 52 I/Os in its 64-pin configuration.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51308ADFM#10, R5F51308ADFP#30 offers higher I/O count and full peripheral complement at larger footprint, while R5F51305ADFM#30 trades memory capacity for lower unit cost - all share identical core architecture, clock system, and peripheral register maps for scalable firmware development.

Availability

R5F51308ADFM#10 is available at Aetrix Electronics and suitable for industrial HMI, appliance control, medical device interfaces, and smart energy metering requiring stable component supply across extended product lifecycles.

Supply support for R5F51308ADFM#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 embedded applications requiring rich analog integration, capacitive touch, low-power operation, and functional safety support - optimized for appliance, industrial control, and medical HMI designs.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51308ADFM#10?

The R5F51308ADFM#10 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its 32-bit RX CPU core features a 5-stage pipeline, variable-length instruction set, and 64-bit accumulator capable of single-cycle 32×32 multiplication. Performance is sustained across the full 1.8–5.5 V supply range, with frequency scaling tied to VCC voltage levels per datasheet Table 1.1.

Does the R5F51308ADFM#10 support capacitive touch sensing, and how many keys can it handle?

Yes, the R5F51308ADFM#10 integrates a Capacitive Touch Sensing Unit (CTSUa) supporting up to 32 keys in mutual capacitance mode using TS0–TS31 pins. It does not support the full 36-key capability of 100-pin variants due to pin count limitations in the PLQP0064KB-C package. Self-capacitance mode is also available but limited to fewer keys in this configuration.

What low-power features does the R5F51308ADFM#10 offer for battery-operated applications?

The R5F51308ADFM#10 provides three low-power 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. Wake-up occurs in 4.8 µs, and peripherals like ELC and MTU retain event-trigger capability without CPU involvement - ideal for intermittent sensing or touch-wake applications.

Is the R5F51308ADFM#10 qualified for functional safety standards such as IEC60730?

Yes, the R5F51308ADFM#10 includes hardware-assisted functions for IEC60730 Class B compliance, including RAM test assistance via DOC, A/D converter self-diagnostic and analog input disconnection detection, clock frequency accuracy measurement (CAC), and independent watchdog timer (IWDT) disconnection monitoring. These features are documented in the R01DS0273EJ0300 datasheet and require proper firmware initialization per Renesas application notes.

What communication interfaces are available on the R5F51308ADFM#10, and which packages support them?

The R5F51308ADFM#10 supports SCI (7 channels, including LIN-capable SCI12), I²C (1 channel, up to 400 kbps), RSPI (1 channel, up to 16 Mbps), and simple SPI/I²C modes on shared pins. All are available in the 64-pin PLQP0064KB-C package. REMC (remote control receiver) and full RTC are omitted in this variant per Table 1.2 - unlike the 100-pin R5F51308ADFP#30 which includes both.