Renesas R5F51101ADNE#U0

Overview

R5F51101ADNE#U0 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 32 KB on-chip flash, 10 KB SRAM, 12-bit A/D converter with 14 channels, RTC, and dual SCI + I²C + RSPI interfaces. It targets low-power industrial sensor nodes and battery-powered control modules requiring deterministic real-time response and IEC 60730 compliance.

For engineers reviewing the R5F51101ADNE#U0 datasheet, R5F51101ADNE#U0 pinout, R5F51101ADNE#U0 application, or R5F51101ADNE#U0 equivalent, this page delivers verified specifications, package mapping to PWQN0048KB-A (48-pin HWQFN, 7 × 7 mm, 0.5 mm pitch), functional pin roles, and validated alternative parts for design-in decisions.

Technical Context

The R5F51101ADNE#U0 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its on-chip clock system integrates high-speed (32 MHz ±1%), sub-clock (32.768 kHz), and IWDT-dedicated (15 kHz) oscillators with CAC for frequency accuracy monitoring.

It supports three low-power modes-sleep, deep sleep, and software standby-with 0.35 μA standby current and 4.8 μs wake-up time. Peripheral integration includes MTU2 (4-channel 16-bit timer), CMT (2-channel), DTC for interrupt-triggered transfers, and hardware CRC calculation using X⁸+X²+X+1, X¹⁶+X¹⁵+X²+1, or X¹⁶+X¹²+X⁵+1 polynomials.

Key Specifications

Pinout & Package

PWQN0048KB-A is a 48-pin HWQFN (7 × 7 mm, 0.5 mm pitch) with an exposed thermal pad recommended for connection to VSS. Pin functions are multiplexed via MPC; key I/O groups include P0–P5, PA–PE, PH, PJ, and dedicated peripheral pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51101ADNE#U0, the G-grade variant extends temperature range for harsh environments, while the R5F51103ADNE#U0 adds 32 KB flash for feature-rich firmware-all retaining identical pinout, peripheral count, and low-power behavior.

Availability

R5F51101ADNE#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, appliance motor control systems, and medical diagnostic handhelds requiring stable component supply and long-term production continuity.

Supply support for R5F51101ADNE#U0 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 industrial, automotive, and IoT markets.

The RX110 Group, including R5F51101ADNE#U0, is designed for cost-sensitive, low-power embedded applications demanding real-time performance, functional safety support, and compact footprint in HWQFN or WFLGA packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F51101ADNE#U0?

The R5F51101ADNE#U0 operates at a maximum frequency of 32 MHz and delivers 50 DMIPS of processing performance. Its RX CPU core features a five-stage pipeline, variable-length instruction encoding, and a 64-bit accumulator capable of holding full 32×32 multiplication results in one cycle-enabling efficient signal processing and real-time control tasks within the R5F51101ADNE#U0.

Which package type does the R5F51101ADNE#U0 use, and what are its mechanical dimensions?

The R5F51101ADNE#U0 uses the PWQN0048KB-A package: a 48-pin HWQFN measuring 7 × 7 mm with 0.5 mm pitch and an exposed thermal pad. The pad must be connected to VSS for thermal and electrical stability. This compact footprint supports high-density PCB layouts typical in space-constrained applications like portable medical devices and smart sensors-key attributes of the R5F51101ADNE#U0.

Does the R5F51101ADNE#U0 support IEC 60730 functional safety compliance?

Yes, the R5F51101ADNE#U0 integrates hardware features required for IEC 60730 Class B compliance, including a clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, RAM test assist functions, and voltage monitoring circuits. These capabilities are documented in the R5F51101ADNE#U0 datasheet and enable certified safety routines without external components.

How many A/D converter channels does the R5F51101ADNE#U0 support, and what is its minimum conversion time?

The R5F51101ADNE#U0 includes a 12-bit S12AD module supporting up to 14 analog input channels. At maximum CPU clock (32 MHz), its minimum conversion time is 1.0 μs per channel. It also supports double-trigger mode for duplicated sampling-critical for motor control applications where phase current synchronization is essential in the R5F51101ADNE#U0.

What communication interfaces are integrated into the R5F51101ADNE#U0?

The R5F51101ADNE#U0 integrates SCI (2 channels: SCI1 and SCI5), SCIf (1 channel: SCI12), RIIC (1 channel, 400 kbps I²C/SMBus), and RSPI (1 channel, 16 Mbps SPI). All interfaces support flexible clocking, LSB/MSB-first data ordering, and hardware flow control-enabling robust connectivity to sensors, displays, wireless modules, and legacy peripherals in designs based on the R5F51101ADNE#U0.