Renesas R5F101EAANA#U0

Overview

R5F101EAANA#U0 from Renesas is a 40-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 64 KB flash, 4 KB data flash, 2 KB RAM, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode) for battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F101EAANA#U0 datasheet, R5F101EAANA#U0 pinout, R5F101EAANA#U0 application, or R5F101EAANA#U0 equivalent, key selection criteria include its 40-pin 6×6 mm HWQFN package, absence of on-chip data flash (distinguishing it from R5F100x variants), -40°C to +85°C industrial temperature grade, and integrated 10-bit ADC with 26-channel analog input capability.

Technical Context

The R5F101EAANA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). It integrates a 12-bit interval timer, real-time clock with calendar/alarm functions, and watchdog timer with dedicated low-speed oscillator.

Peripheral integration includes up to 26-channel 10-bit A/D converter with internal 1.45 V reference and temperature sensor, 8–16 channels of 16-bit timers, 2–4 channel DMA controller, and serial interfaces comprising 2–8 CSI (SPI-compatible), 2–4 UART/LIN, and 3–10 I²C channels - all operating across 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch), moisture-sensitive level 3, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100EAANA#U0, the R5F101EAANA#U0 removes data flash to reduce die size and cost while retaining identical code flash, RAM, peripherals, and ultra-low-power modes - making it ideal for fixed-function firmware deployments. Against RL78/G14 alternatives, it trades USB and higher performance for lower static power and proven G13 ecosystem compatibility.

Availability

R5F101EAANA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and home appliance control systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F101EAANA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized balance of performance, energy efficiency, and peripheral integration for battery-operated and energy-harvesting systems.

FAQ

What is the maximum operating frequency of the R5F101EAANA#U0?

The R5F101EAANA#U0 supports up to 32 MHz operation using the high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and -20°C to +85°C. Its RL78 CPU core achieves 41 DMIPS at this frequency, enabling responsive real-time control without external clock components.

Does the R5F101EAANA#U0 include on-chip data flash memory?

No, the R5F101EAANA#U0 does not include on-chip data flash memory. Per Renesas part numbering convention, the "101" prefix indicates data flash omission, distinguishing it from "100" variants like R5F100EAANA#U0 which integrate 4 KB of data flash for parameter storage.

What package type and pin count does the R5F101EAANA#U0 use?

The R5F101EAANA#U0 uses a 40-pin HWQFN package measuring 6 mm × 6 mm with 0.5 mm pitch. This compact, thermally efficient package is designated by "NA" in the part number and shipped in trays (#U0) or embossed tape (#W0), meeting IPC/JEDEC J-STD-020 moisture sensitivity level 3.

Which analog-to-digital converter features are supported on the R5F101EAANA#U0?

The R5F101EAANA#U0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor. It supports single- and continuous-conversion modes, hardware-triggered sampling, and background operation during data flash writes.

How does the R5F101EAANA#U0 achieve ultra-low power consumption?

The R5F101EAANA#U0 achieves ultra-low power via multiple hardware states: 66 μA/MHz active current, 0.57 μA STOP mode with RTC + LVD active, and configurable HALT/SNOOZE modes. Its voltage regulator, clock gating, and peripheral stop controls enable granular power management per subsystem without software overhead.