Renesas R5F11AGGDNB#20

Overview

R5F11AGGDNB#20 from Renesas Electronics is a Bluetooth Low Energy 4.2 single-mode SoC MCU integrating the 16-bit RL78-S2 CPU core, on-chip 2.4 GHz RF transceiver, 192 KB flash, 16 KB RAM, and 8 KB data flash. It operates from 1.6 V to 3.6 V across –40°C to +85°C and targets battery-powered BLE peripherals such as wireless sensors and wearable health monitors.

For engineers reviewing the R5F11AGGDNB#20 datasheet, R5F11AGGDNB#20 pinout, R5F11AGGDNB#20 application, or R5F11AGGDNB#20 equivalent, key selection criteria include its integrated RF transceiver with AES encryption, ultra-low-power STOP mode (0.3 μA RF sleep), 48-pin HWQFN package, and support for Bluetooth SIG qualification-ready firmware stacks.

Technical Context

The R5F11AGGDNB#20 implements a dual-domain architecture: an RL78-S2 CPU subsystem with Harvard CISC pipeline and configurable clocking (32 MHz max), and a dedicated RF unit with GFSK modulation, frequency hopping, and hardware AES-128. The RF block uses separate analog/digital power domains (VDD_RF/AVDD_RF/VSS_RF/AVSS_RF) and requires external matching network connection via ANT pin.

Its timing architecture includes three independent clock sources: high-speed on-chip oscillator (1–32 MHz), crystal-based main system clock (1–20 MHz), and 32.768 kHz subsystem/RF slow clock - enabling precise RTC operation and low-jitter BLE advertising intervals while maintaining sub-μA standby current in POWER_DOWN mode.

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (6 × 6 mm, 0.4 mm pitch), exposed die pad (GND1) requiring solder connection to PCB ground plane per datasheet layout guidance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F11AGGDNB#20, R5F11AGHDNB#20 offers headroom for feature-rich firmware growth without changing PCB layout, while nRF52833-QDAA delivers superior compute performance and protocol flexibility at the cost of higher power and design complexity.

Availability

R5F11AGGDNB#20 is available at Aetrix Electronics and suitable for wireless health monitors, smart home sensors, industrial asset trackers, and BLE beacon transmitters requiring stable component supply and long-term industrial temperature support.

Supply support for R5F11AGGDNB#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.

The RL78/G1D product line was designed specifically for ultra-low-power Bluetooth Low Energy endpoints, integrating RF, security, and mixed-signal peripherals into a single chip to accelerate development of certified BLE products.

FAQ

What Bluetooth specification does the R5F11AGGDNB#20 support?

The R5F11AGGDNB#20 supports Bluetooth v4.2 Low Energy Single Mode, including GFSK modulation, TDMA/TDD frequency hopping, and mandatory AES-128 encryption circuitry. It is not compatible with Bluetooth Classic, BR/EDR, or Bluetooth 5.x features such as LE Long Range or LE Advertising Extensions. Full SIG qualification requires Renesas-provided BLE stack and test firmware.

Does the R5F11AGGDNB#20 require external crystals?

Yes - the R5F11AGGDNB#20 requires two external crystals: a 32.768 kHz crystal on XT1/XT2 for subsystem timing and RTC, and a 32 MHz crystal on XTAL1_RF/XTAL2_RF dedicated to the RF transceiver. The high-speed on-chip oscillator can serve as main system clock, but RF operation mandates the external 32 MHz crystal.

What is the maximum allowed supply voltage for the RF section of the R5F11AGGDNB#20?

The absolute maximum rating for VDD_RF and AVDD_RF pins of the R5F11AGGDNB#20 is +4.0 V. Operating above this voltage risks permanent damage to the RF transceiver block. Recommended operating range is 1.6 V to 3.6 V, matching the MCU's VDD range, with strict decoupling (0.1 µF + 1 µF) required per Renesas layout guidelines.

How many general-purpose I/O pins does the R5F11AGGDNB#20 provide?

The R5F11AGGDNB#20 provides 32 total I/O pins, including 20 CMOS I/O, 5 CMOS inputs, 1 CMOS output, 2 N-ch open-drain I/O (6 V tolerant), and 4 dedicated RF GPIOs (GPIO0–GPIO3). Pin functions are configurable via Peripheral I/O Redirection Register (PIOR), allowing multiplexing of serial interfaces, timers, and analog inputs across shared pins.

Can the R5F11AGGDNB#20 operate in standalone mode without external memory?

Yes - the R5F11AGGDNB#20 contains 192 KB on-chip flash, 16 KB RAM, and 8 KB data flash, eliminating the need for external memory in most BLE peripheral applications. Its self-programming capability supports secure boot swap and flash shield window protection, enabling field firmware updates without external programming hardware.