Renesas R5F11BBCANA#20

Overview

R5F11BBCANA#20 from Renesas Electronics is a 32-pin HWQFN-packaged 16-bit RL78/G1F microcontroller with 32 KB flash, 4 KB data flash, 5.5 KB RAM, 13-channel 8/10-bit ADC, and dual 8-bit DAC outputs. It operates from 1.6 V to 5.5 V at up to 32 MHz and delivers ultra-low power consumption (66 μA/MHz active, 0.57 μA in RTC+LVD mode), targeting battery-powered sensor nodes and smart home control units.

For engineers reviewing the R5F11BBCANA#20 datasheet, R5F11BBCANA#20 pinout, R5F11BBCANA#20 application, or R5F11BBCANA#20 equivalent, this page provides verified package mapping (HWQFN-32, 5×5 mm, 0.5 mm pitch), confirmed peripheral count (9×16-bit timers, 3×UART/LIN, 3×I²C, 1×IrDA), real-time clock calendar support, and validated alternative part selection for industrial-grade embedded designs.

Technical Context

The R5F11BBCANA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–32 MHz), low-speed 15 kHz internal RC, and hardware event link controller (ELC) supporting 21 event inputs and 10 trigger outputs for deterministic peripheral coordination.

Its analog subsystem includes two comparators with selectable internal/external reference, one programmable gain amplifier (PGA), and a 12-bit interval timer with RTC calendar function (99-year range, alarm, clock correction). Power management features HALT, STOP, and SNOOZE modes, on-chip POR/LVD (14-level selectable reset/interrupt), and voltage detector operation down to 1.6 V.

Key Specifications

Pinout & Package

Package: HWQFN-32, 5 × 5 mm body, 0.5 mm pitch, exposed die pad (recommended connected to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11BBCANA#20, R5F11BBEANA#20 offers double flash capacity with zero hardware change, while R5F11B7CANA#20 reduces pin count and analog resources to lower system cost - both retain identical low-power operation and RL78/G1F peripheral compatibility.

Availability

R5F11BBCANA#20 is available at Aetrix Electronics and suitable for smart thermostat control, industrial sensor nodes, home appliance motor control, and medical wearable monitors requiring stable component supply across automotive-qualified temperature ranges (−40°C to +85°C).

Supply support for R5F11BBCANA#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/G1F product line targets general-purpose ultra-low-power applications, integrating enhanced analog functions (dual DAC, PGA, 13-channel ADC) and robust timing (RTC calendar, ELC) for intelligent edge devices.

FAQ

What is the operating voltage range of the R5F11BBCANA#20?

The R5F11BBCANA#20 operates from 1.6 V to 5.5 V over its full industrial temperature range (−40°C to +85°C). This wide supply range enables direct integration with single-cell Li-ion, 3.3 V logic, and legacy 5 V systems without level-shifting. The on-chip voltage detector supports 14 programmable threshold levels for precise brownout monitoring.

Does the R5F11BBCANA#20 support real-time clock functionality with calendar features?

Yes, the R5F11BBCANA#20 includes a full-featured real-time clock (RTC) with calendar support for 99 years, alarm interrupt, and automatic clock correction. It operates independently in STOP mode using the 32.768 kHz subsystem clock, consuming only 0.57 μA total with LVD enabled - making it ideal for time-stamped data logging and scheduled wake-up tasks.

How many analog-to-digital converter channels does the R5F11BBCANA#20 have, and what is their resolution?

The R5F11BBCANA#20 features a 13-channel 8/10-bit successive approximation register (SAR) ADC. Resolution is selectable per channel, with input range referenced to VDD (1.6–5.5 V). It includes internal 1.45 V reference and temperature sensor, enabling accurate sensor measurements without external components.

Can the R5F11BBCANA#20 perform background data flash rewriting while executing code from main flash?

Yes, the R5F11BBCANA#20 supports background operation (BGO) for data flash. Code execution continues uninterrupted from program memory while 4 KB of data flash is rewritten - critical for firmware-over-the-air updates and persistent parameter storage in mission-critical systems.

What package type and pin count does the R5F11BBCANA#20 use?

The R5F11BBCANA#20 uses a 32-pin HWQFN package (5 × 5 mm body, 0.5 mm pitch) with an exposed die pad. This compact, thermally efficient package is optimized for space-constrained consumer and industrial applications and requires the REGC pin to be decoupled to VSS with a 0.47–1 μF capacitor.