Renesas R5F101EHANA#20

Overview

R5F101EHANA#20 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, and 2 KB RAM, operating from 1.6 V to 5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), integrated 10-bit ADC (26 channels), real-time clock, and UART/I²C/CSI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F101EHANA#20 datasheet, R5F101EHANA#20 pinout, R5F101EHANA#20 application, or R5F101EHANA#20 equivalent, key selection criteria include its 40-pin 6×6 mm HWQFN-0.5mm-pitch package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for background data flash rewriting during program execution.

Technical Context

The R5F101EHANA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It integrates a 12-bit interval timer, calendar-based real-time clock with alarm and correction, and watchdog timer powered by dedicated low-speed oscillator.

Its peripheral set 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 timer, 2–4 UART/LIN channels, 3–10 I²C/Simplified I²C channels, and 2–8 CSI (SPI-compatible) channels - all configurable via register-based control without external glue logic.

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 R5F100EHANA#20 and R5F101EGANA#20, the R5F101EHANA#20 offers optimal cost/performance balance for resource-constrained industrial controls where 2 KB RAM and 4 KB data flash suffice - avoiding over-provisioned memory that increases BOM cost without functional benefit.

Availability

R5F101EHANA#20 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across extended production lifecycles.

Supply support for R5F101EHANA#20 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 automotive, industrial, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial and consumer equipment requiring long service life and robust peripheral integration.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101EHANA#20?

The R5F101EHANA#20 operates at up to 32 MHz with a performance rating of 41 DMIPS. Its high-accuracy on-chip oscillator maintains ±1.0% stability across 1.8 V to 5.5 V supply and -40°C to +85°C ambient temperature, eliminating need for external crystal in many timing-critical applications. This frequency enables real-time control loops with sub-microsecond response in motor drive or power conversion systems using the R5F101EHANA#20.

Does the R5F101EHANA#20 include on-chip data flash memory, and what is its endurance specification?

Yes, the R5F101EHANA#20 includes 4 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 1.8 V to 5.5 V. It supports background operation (BGO), allowing program execution from code flash while data flash is rewritten - critical for maintaining system responsiveness during firmware parameter updates or sensor data logging. This capability is fully implemented in the R5F101EHANA#20 without external components.

What low-power modes does the R5F101EHANA#20 support, and what is the lowest achievable current draw?

The R5F101EHANA#20 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it achieves 0.57 μA typical current consumption - verified per R01DS0131EJ0380 datasheet. This ultra-low quiescent current enables multi-year battery operation in wireless sensor nodes. The R5F101EHANA#20 enters and exits these modes via software-controlled register writes without external circuitry.

Can the R5F101EHANA#20 perform analog-to-digital conversion, and what are its key ADC specifications?

Yes, the R5F101EHANA#20 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 operates across the full 1.6 V to 5.5 V supply range and supports scan mode with automatic channel sequencing. These ADC capabilities are natively supported in the R5F101EHANA#20 silicon and require no external calibration components.

What is the package type and pin count of the R5F101EHANA#20, and is it RoHS compliant?

The R5F101EHANA#20 uses a 40-pin HWQFN package measuring 6 mm × 6 mm with 0.5 mm pitch, as confirmed in Table 1-1 of the R01DS0131EJ0380 datasheet. It is lead-free and RoHS compliant, with moisture sensitivity level MSL3. This compact, thermally efficient package supports high-density PCB layouts in space-constrained industrial modules - a defining physical characteristic of the R5F101EHANA#20.