Renesas R5F51305ADFK#10

Overview

R5F51305ADFK#10 from Renesas Electronics is a 32-bit RX CPU-based microcontroller in the RX130 Group, operating at up to 32 MHz (50 DMIPS), featuring 128 KB on-chip flash, 16 KB SRAM, and 8 KB data flash. It integrates a 12-bit A/D converter (14 channels), two 8-bit D/A outputs, capacitive touch sensing (32 channels), RTC, low-power timer, and multiple communication interfaces including SCI, I²C, and RSPI - deployed in industrial human-machine interfaces and smart appliance control units.

For engineers reviewing the R5F51305ADFK#10 datasheet, R5F51305ADFK#10 pinout, R5F51305ADFK#10 application, or R5F51305ADFK#10 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, IEC60730-compliant safety features, and support for event-driven low-power operation via ELC and software standby mode (0.37 µA).

Technical Context

The R5F51305ADFK#10 implements the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions, delivering 50 DMIPS at 32 MHz. It supports little-endian instruction/data layout and includes a 64-bit accumulator for single-cycle 32×32-bit multiply operations.

Its peripheral set is tailored for embedded control: the Event Link Controller (ELC) enables interrupt-free inter-module triggering (e.g., MTU → A/D start), while the Multi-function Pin Controller (MPC) allows flexible I/O function assignment across 52 GPIOs. The chip version A (denoted by "A" in part number) is functionally identical to version B per Renesas documentation.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not present. Compatible with standard LQFP reflow profiles and manual soldering using IPC-J-STD-020D guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51305ADFM#30 and R5F51305AGFK#30, the R5F51305ADFK#10 offers the largest LQFP-64 footprint (14×14 mm), easing thermal dissipation and mechanical reliability, while maintaining full feature parity - making it ideal for prototyping, medium-volume production, and applications prioritizing manufacturability over miniaturization.

Availability

R5F51305ADFK#10 is available at Aetrix Electronics and suitable for industrial HMI development, smart appliance control systems, and energy monitoring gateways requiring stable component supply, long-term lifecycle assurance, and Renesas-qualified traceable sourcing.

Supply support for R5F51305ADFK#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 is designed for cost-sensitive, low-power embedded applications demanding rich analog integration, capacitive touch capability, and functional safety compliance - targeting white goods, building automation, and industrial control panels.

FAQ

What is the maximum operating frequency of the R5F51305ADFK#10 and how does supply voltage affect it?

The R5F51305ADFK#10 achieves a maximum operating frequency of 32 MHz when powered at 2.7–5.5 V. At 2.4–2.7 V, max frequency drops to 16 MHz; at 1.8–2.4 V, it is limited to 8 MHz. This voltage-frequency scaling is enforced in hardware and documented in Section 1.1 of the R01DS0273EJ0300 datasheet. All timing specifications for peripherals (e.g., A/D conversion, SCI baud rate) scale accordingly with the actual ICLK frequency.

How many capacitive touch channels does the R5F51305ADFK#10 support, and what package dependency applies?

The R5F51305ADFK#10 supports up to 32 capacitive touch sensing channels via its CTSU module. This count is specific to the PLQP0064GA-A (64-pin LQFP, 0.8 mm pitch) package, as confirmed in Table 1.2 of the datasheet. Other 64-pin variants (e.g., PLQP0064KB-C) support 36 channels, but R5F51305ADFK#10's pinout constrains usable TSx pins to 32 - verified in the pin function table and package-specific signal mapping.

Does the R5F51305ADFK#10 include hardware support for IEC60730 Class B compliance?

Yes, the R5F51305ADFK#10 includes dedicated hardware features for IEC60730 Class B compliance: built-in RAM test assistance (via DOC), clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, A/D self-diagnostic and analog input disconnection detection, and temperature sensor integration. These are explicitly listed in the "Useful functions for IEC60730 compliance" section of the datasheet and require no external components.

What are the key differences between R5F51305ADFK#10 and R5F51305ADFM#30?

The R5F51305ADFK#10 and R5F51305ADFM#30 share identical silicon functionality, memory sizes (128 KB flash, 16 KB SRAM), peripherals, and temperature grade (–40°C to +85°C). Their sole difference is package: R5F51305ADFK#10 uses PLQP0064GA-A (LQFP-64, 14×14 mm, 0.8 mm pitch), while R5F51305ADFM#30 uses PLQP0064KB-C (LFQFP-64, 10×10 mm, 0.5 mm pitch). Layout, thermal, and assembly considerations drive the selection - not electrical or functional divergence.

Can the R5F51305ADFK#10 operate in low-power modes while maintaining RTC and LPT functionality?

Yes, the R5F51305ADFK#10 supports RTC and Low Power Timer (LPT) operation during software standby mode - its deepest low-power state. In this mode, the CPU and most peripherals halt, but the sub-clock oscillator (32.768 kHz) continues running to drive both RTC calendar counting and LPT timeout generation. Supply current drops to 0.37 µA, and wake-up occurs in 4.8 µs upon LPT match or RTC alarm, as specified in the "Low power consumption" section of the datasheet.