Renesas R5F11BBEANA#20

Overview

R5F11BBEANA#20 from Renesas is a 32-pin HWQFN-packaged RL78/G1F 16-bit microcontroller with 64 KB flash, 5.5 KB RAM, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 13-channel 8/10-bit ADC, dual 8-bit DAC, two comparators, PGA, nine 16-bit timers (including PWMOPA), RTC, and multiple serial interfaces (CSI, UART/LIN, I²C, IrDA) for embedded control in battery-powered consumer devices.

For engineers reviewing the R5F11BBEANA#20 datasheet, R5F11BBEANA#20 pinout, R5F11BBEANA#20 application, or R5F11BBEANA#20 equivalent, key selection considerations include its 32-pin 5×5 mm HWQFN package, 64 KB code flash with self-programming and boot swap, 4 KB data flash with background operation (1M rewrite cycles), and support for 1.6–5.5 V single-supply operation across −40 to +85°C ambient.

Technical Context

The R5F11BBEANA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.03125 μs at 32 MHz high-speed on-chip oscillator up to 30.5 μs at 32.768 kHz subsystem clock). It supports true low-power modes including HALT, STOP, and SNOOZE, with on-chip voltage detector (14-level LVD) and power-on-reset circuit.

Peripheral integration includes Event Link Controller (ELC) linking 22 event signals to peripherals, Data Transfer Controller (DTC) with 32 activation sources and chain transfer, and programmable I/O redirection via PIOR0–PIOR3 registers. The device uses separate EVDD0/EVSS0 domains for noise-sensitive analog sections and supports different-potential interface (1.8/2.5/3 V).

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed die pad (recommended connection to VSS), REGC capacitor (0.47–1 μF to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11BBCANA#20 and R5F11BLEANA#20, the R5F11BBEANA#20 uniquely balances 64 KB flash capacity, 32-pin compactness, and full RL78/G1F peripheral set - making it optimal for space-constrained, firmware-upgradable consumer electronics where pin count and code size are both critical.

Availability

R5F11BBEANA#20 is available at Aetrix Electronics and suitable for smart home sensors, portable medical monitors, industrial remote I/O modules, and appliance control panels requiring stable component supply and long-term production continuity.

Supply support for R5F11BBEANA#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 automotive, industrial, and IoT markets.

The RL78/G1F product line delivers true low-power embedded control with integrated analog peripherals and robust flash reliability - designed specifically for battery-operated and energy-conscious applications demanding long service life and field firmware updates.

FAQ

What is the maximum operating frequency of the R5F11BBEANA#20?

The R5F11BBEANA#20 supports a maximum CPU operation frequency of 32 MHz using the high-speed on-chip oscillator. This is achievable across the full 1.6–5.5 V supply range and −40 to +85°C temperature range, with oscillator accuracy of ±1.0% under those conditions. The device also supports lower-frequency modes including 32.768 kHz for RTC and ultra-low-power operation.

Does the R5F11BBEANA#20 support in-system programming and secure firmware updates?

Yes, the R5F11BBEANA#20 supports full in-system programming via its on-chip debug interface and includes flash shield window functionality to protect designated memory regions. It enables secure firmware updates through self-programming with boot swap capability, allowing validated new firmware to be loaded into inactive flash banks and activated atomically upon reset - preventing corruption during power loss.

How many analog input channels does the R5F11BBEANA#20 support, and what is their resolution?

The R5F11BBEANA#20 supports 13 analog input channels with configurable 8-bit or 10-bit resolution. These channels operate across the full 1.6–5.5 V supply range and include internal reference voltage (1.45 V) and integrated temperature sensor. Input channels map to pins P00–P01, P10–P17, P20–P27, and P120–P147 as defined in the pin configuration table.

What serial communication interfaces are integrated into the R5F11BBEANA#20?

The R5F11BBEANA#20 integrates three simplified SPI (CSI) channels, three UART channels (with LIN-bus support), three I²C/simplified I²C channels, and one IrDA channel. All interfaces support peripheral I/O redirection via PIOR registers, enabling flexible pin assignment without PCB redesign. UART0 includes dedicated TOOLRxD/TOOLTxD pins for debug connectivity.

Is the R5F11BBEANA#20 pin-compatible with other RL78/G1F variants in the same package?

Yes, the R5F11BBEANA#20 shares identical pinout and electrical characteristics with other 32-pin HWQFN RL78/G1F devices including R5F11BBCANA#20, R5F11BBEGNA#20, and R5F11BBEAFP#10. Pin functions are consistent across these variants; differences are limited to flash size (32 KB vs. 64 KB), temperature grade (A vs. G), and packaging (tray vs. tape), not pin mapping or I/O behavior.