Renesas R5F101EEANA#U0

Overview

R5F101EEANA#U0 from Renesas is a 40-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 48 KB flash, 3 KB RAM, and no data flash memory, operating at 1.6–5.5 V with ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), used in battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F101EEANA#U0 datasheet, R5F101EEANA#U0 pinout, R5F101EEANA#U0 application, or R5F101EEANA#U0 equivalent, key selection criteria include its 40-pin HWQFN-0.5mm pitch package, absence of on-chip data flash, support for 32 MHz max CPU clock via high-accuracy on-chip oscillator (±1.0%), and integrated 10-bit 26-channel ADC with internal temperature sensor.

Technical Context

The R5F101EEANA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a 12-bit interval timer, real-time clock with calendar/alarm functions, and watchdog timer powered by dedicated low-speed oscillator.

Peripheral integration includes up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 8–16 channels of 16-bit timers, 2–4 channel DMA controller, and serial interfaces: CSI (SPI-compatible), UART/LIN, and I²C (3–10 channels), all configurable across 40 I/O pins with N-ch open-drain, TTL input, and pull-up options.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5-mm pitch), moisture sensitivity level MSL3, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100EEANA#U0, the R5F101EEANA#U0 saves BOM cost by omitting data flash while maintaining full code flash and RAM capacity; versus R5F101EDANA#U0, it delivers 50% more flash and 50% more RAM for complex communication stacks or sensor fusion without changing PCB layout.

Availability

R5F101EEANA#U0 is available at Aetrix Electronics and suitable for smart metering interfaces, industrial sensor nodes, home appliance motor controllers, and low-power IoT gateways requiring stable component supply across multi-year production cycles.

Supply support for R5F101EEANA#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose applications - designed to replace legacy 8-bit MCUs with enhanced performance, integrated analog, and robust low-power modes for battery and energy-harvesting systems.

FAQ

What is the maximum operating frequency of the R5F101EEANA#U0?

The R5F101EEANA#U0 supports a maximum CPU clock frequency of 32 MHz, achievable using the high-accuracy on-chip oscillator (±1.0% over –20 to +85°C). This delivers 41 DMIPS performance and enables fast ADC sampling, real-time control loop execution, and responsive serial communication without requiring an external crystal.

Does the R5F101EEANA#U0 include data flash memory?

No, the R5F101EEANA#U0 does not include on-chip data flash memory. It features 48 KB of code flash and 3 KB of RAM only. Data storage must be implemented externally or via code flash emulation techniques. For designs requiring persistent parameter storage, the pin-compatible R5F100EEANA#U0 (with 4 KB data flash) is a documented alternative.

What package type and pin count does the R5F101EEANA#U0 use?

The R5F101EEANA#U0 uses a 40-pin HWQFN package (6 × 6 mm, 0.5-mm pitch), designated by the "NA" suffix and "#U0" tray packaging code. This compact, thermally efficient package supports reflow soldering and is suitable for space-constrained industrial and consumer applications requiring high I/O density.

Which analog peripherals are integrated into the R5F101EEANA#U0?

The R5F101EEANA#U0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and a calibrated on-chip temperature sensor. These features enable direct measurement of analog sensors, supply rails, and ambient temperature without external components - critical for precision in metering and environmental monitoring.

How does the R5F101EEANA#U0 achieve ultra-low power operation?

The R5F101EEANA#U0 achieves ultra-low power via multiple hardware modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (peripheral-triggered wake-up with minimal latency). Its 0.57 μA STOP mode with RTC+LVD active enables decade-long battery life in always-on sensing applications, validated across –40 to +85°C.