Renesas R5F101BAANA#20

Overview

R5F101BAANA#20 from Renesas is a 32-bit RL78/G13 microcontroller with 16 KB flash memory, 2 KB RAM, and no data flash, packaged in a 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch). It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes including STOP (0.57 μA) and HALT, targeting battery-powered sensor nodes and industrial control interfaces.

For engineers reviewing the R5F101BAANA#20 datasheet, R5F101BAANA#20 pinout, R5F101BAANA#20 application, or R5F101BAANA#20 equivalent, key selection criteria include its 32-pin HWQFN footprint, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (A-suffix), and integrated 10-bit ADC with 16 analog inputs - critical for cost-sensitive embedded sensing designs requiring minimal external components.

Technical Context

The R5F101BAANA#20 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz low-speed mode). Its memory map spans 1 MB, with dedicated SFR space and banked 8-bit general-purpose registers.

Peripherals include eight 16-bit timers, one real-time clock with calendar/alarm, one watchdog timer, up to four UART/LIN channels, three to ten I²C interfaces, two to eight CSI (SPI-compatible) channels, and a 10-bit A/D converter with internal 1.45 V reference and temperature sensor - all configurable without external support circuitry.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BAANA#20, the R5F101BAANA#20 removes data flash to lower unit cost and simplify firmware update logic, while retaining full code flash, RAM, and peripheral functionality; versus R5F101BAFNA#20, it offers superior thermal dissipation and board-space efficiency in compact designs.

Availability

R5F101BAANA#20 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, and energy meter interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F101BAANA#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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power embedded applications - designed to replace legacy 8/16-bit MCUs with enhanced performance, integrated peripherals, and simplified power architecture.

FAQ

What is the maximum operating frequency and performance rating of the R5F101BAANA#20?

The R5F101BAANA#20 operates at up to 32 MHz and delivers 41 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, enabling deterministic real-time response in control loops and sensor fusion algorithms. The R5F101BAANA#20 maintains this performance across its full 1.6 V to 5.5 V supply range.

Does the R5F101BAANA#20 include on-chip data flash memory?

No, the R5F101BAANA#20 does not include on-chip data flash memory. It provides 16 KB of code flash and 2 KB of RAM only. Data storage must be implemented externally or via emulated EEPROM in code flash. The R5F100BAANA#20 variant includes 4 KB of dedicated data flash and shares the same pinout and package as the R5F101BAANA#20.

What package type and dimensions does the R5F101BAANA#20 use?

The R5F101BAANA#20 uses a 32-pin HWQFN package measuring 5 mm × 5 mm with 0.5-mm pitch and an exposed thermal pad. This compact, surface-mount package supports high-density PCB layouts and efficient thermal conduction when the pad is properly soldered to a thermal plane. It is distinct from the LQFP variant R5F101BAFNA#20.

What are the supported low-power modes and their typical current consumption for the R5F101BAANA#20?

The R5F101BAANA#20 supports HALT, STOP, and SNOOZE modes. In STOP mode with RTC and LVD active, typical current is 0.57 μA; in HALT mode, it draws 66 μA/MHz during active operation. These modes are hardware-controlled and retain RAM content, enabling rapid wake-up for event-driven applications like sensor polling or button interrupts.

Which communication interfaces are integrated into the R5F101BAANA#20?

The R5F101BAANA#20 integrates multiple serial interfaces: up to four UART/LIN channels (supporting LIN 2.2), three to ten I²C/Simplified I²C channels, and two to eight CSI (SPI-compatible) channels. All are independently configurable and share no fixed pin conflicts, allowing concurrent use - for example, UART for host communication, I²C for sensor reading, and CSI for display driver control.