Renesas R5F51115AGFK#1A

Overview

R5F51115AGFK#1A from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 128 Kbytes of on-chip flash, 16 Kbytes of SRAM, and 8 Kbytes of data flash. It integrates USB 2.0 full-speed host/function/OTG, 14-channel 12-bit A/D converter (1.0 µs conversion), dual 8-bit D/A outputs, RTC with calendar mode, and operates across −40 to +105°C in industrial applications such as smart sensors and portable HMI.

For engineers reviewing the R5F51115AGFK#1A datasheet, R5F51115AGFK#1A pinout, R5F51115AGFK#1A application, or R5F51115AGFK#1A equivalent, key selection criteria include USB OTG support with BC compliance, 64-pin LQFP (PLQP0064GA-A) package compatibility, low-power software standby mode (0.44 μA), and IEC 60730-ready safety functions including CAC and IWDT.

Technical Context

The R5F51115AGFK#1A implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its clock system includes high-speed on-chip oscillator (32 MHz ±1% over −20 to +85°C), PLL input range (4–8 MHz), and dedicated IWDT oscillator (15 kHz).

Peripheral integration centers on event-driven operation: the Event Link Controller (ELC) enables direct module triggering without CPU intervention, while the Data Transfer Controller (DTC) supports chain transfers across four modes activated by 82 interrupt vectors - critical for deterministic real-time response in motor control and sensor fusion.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A, 64-pin LQFP, 14 × 14 mm, 0.8 mm pitch, lead-free (Sn only), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51115AGFK#1A, R5F51115AGFM#3A offers identical functionality in a smaller 0.5 mm pitch package for compact designs, while R5F51116AGFK#3A provides double the flash and RAM for complex firmware stacks - both retain full peripheral and safety feature parity.

Availability

R5F51115AGFK#1A is available at Aetrix Electronics and suitable for industrial sensor nodes, portable HMI terminals, and smart actuator controllers requiring stable component supply, long-term lifecycle support, and IEC 60730-compliant safety features.

Supply support for R5F51115AGFK#1A 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX111 Group, including R5F51115AGFK#1A, is designed for cost-sensitive industrial and consumer applications demanding USB connectivity, low-power operation, and functional safety - targeting smart sensors, portable instruments, and appliance control.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51115AGFK#1A?

The R5F51115AGFK#1A operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its 32-bit RX CPU core features a five-stage pipeline, variable-length instruction set, and single-cycle instruction execution - enabling efficient real-time control in applications like motor drives and sensor fusion where deterministic timing is critical. The R5F51115AGFK#1A achieves this without wait states on its 128 Kbytes flash memory.

Does the R5F51115AGFK#1A support USB On-The-Go (OTG) and Battery Charging (BC) compliance?

Yes, the R5F51115AGFK#1A integrates a full-featured USB 2.0 host/function/OTG module compliant with USB 2.0 specification, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) modes. It also implements Battery Charging (BC) 1.2 specification for SDP/CDP/DCP detection - allowing the R5F51115AGFK#1A to negotiate higher current from USB wall adapters, essential for portable instrumentation and field-configurable devices.

What low-power modes does the R5F51115AGFK#1A offer, and what is its lowest supply current?

The R5F51115AGFK#1A supports three low-power consumption modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.44 μA typical supply current with RTC and IWDT active, recovering in 4.8 μs - ideal for battery-powered remote sensors and always-on monitoring nodes. The R5F51115AGFK#1A maintains full peripheral configurability across all modes, including ELC-triggered wake-up from standby.

How many A/D and D/A channels does the R5F51115AGFK#1A include, and what are their key specs?

The R5F51115AGFK#1A includes one 12-bit A/D converter with up to 14 input channels and a minimum conversion time of 1.0 µs at 32 MHz ADCLK. It also features two 8-bit D/A converters (DA0, DA1) with rail-to-rail output (0 V to VCC). These analog resources are shared with the on-die temperature sensor and support double-trigger mode for motor control - making the R5F51115AGFK#1A suitable for closed-loop analog systems without external converters.

Is the R5F51115AGFK#1A qualified for industrial temperature range and safety standards?

Yes, the R5F51115AGFK#1A is rated for −40 to +105°C operation (G-grade) and includes on-chip functions certified for IEC 60730 Class B compliance, including Clock Accuracy Measurement (CAC), Independent Watchdog Timer (IWDT), and RAM test assist logic. These features enable self-diagnostic capability required in industrial controls and white goods - ensuring the R5F51115AGFK#1A meets functional safety requirements without external monitoring ICs.