Renesas R5F11AGJDNB#20

Overview

R5F11AGJDNB#20 from Renesas Electronics is a Bluetooth Low Energy 4.2 single-mode system-on-chip MCU integrating a 16-bit RL78-S2 CPU core, on-chip 2.4 GHz RF transceiver, 256 KB flash, 20 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 ultra-low-power wearable sensors and BLE peripheral nodes.

For engineers reviewing the R5F11AGJDNB#20 datasheet, R5F11AGJDNB#20 pinout, R5F11AGJDNB#20 application, or R5F11AGJDNB#20 equivalent, key selection criteria include its integrated BLE RF transceiver with AES encryption, 0.3 μA RF sleep current, 48-pin HWQFN package, and support for self-programming with secure boot swap.

Technical Context

The R5F11AGJDNB#20 implements a Harvard-architecture RL78-S2 CPU with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz HS mode) to 30.5 μs (32.768 kHz subsystem clock). Its RF unit operates in the 2.4 GHz ISM band using GFSK modulation and TDMA/TDD frequency hopping, with dedicated GPIO pins (GPIO0–GPIO3) for external PA/LNA control and antenna interface via ANT pin.

Power management includes multiple low-power modes: STOP (MCU), SNOOZE, and six-level RF power-saving modes down to 0.1 μA. The device integrates a 32.768 kHz on-chip oscillator for RF slow clock, separate AVDD_RF/VSS_RF analog supply domains, and DC-DC converter support with DCLIN/DCLOUT pins - all validated for IEC60730 and IEC61508 functional safety compliance.

Key Specifications

Pinout & Package

48-pin HWQFN (6 × 6 mm, 0.4 mm pitch) with exposed thermal pad (GND1) on underside. Requires 0.47–1 µF capacitor between REGC and VSS. RF analog domain uses separate AVDD_RF/AVSS_RF supplies; digital VDD/VSS must be decoupled independently.

Key Features

Applications

Equivalent & Alternatives

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

Compared with nRF52833 DK and CC2642R1F, the R5F11AGJDNB#20 delivers tighter integration of safety-certified MCU + BLE RF + data flash in a compact QFN, optimized for cost-sensitive, certified industrial BLE peripherals where deterministic low-power operation and secure firmware updates are prioritized over multi-protocol agility.

Availability

R5F11AGJDNB#20 is available at Aetrix Electronics and suitable for industrial asset tracking, wireless health monitors, smart home sensor nodes, and BLE beacon transmitters requiring stable component supply and long-term lifecycle support.

Supply support for R5F11AGJDNB#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 connectivity solutions for automotive, industrial, and IoT markets.

The RL78/G1D product line was designed specifically for ultra-low-power Bluetooth Low Energy applications, integrating RF transceiver, security engines, and robust analog peripherals into a single chip to simplify certified wireless design.

FAQ

What is the maximum operating frequency of the R5F11AGJDNB#20 CPU core?

The R5F11AGJDNB#20 features a 16-bit RL78-S2 CPU core with minimum instruction execution time of 0.03125 μs at 32 MHz (high-speed on-chip oscillator mode). It supports configurable clock sources including external crystals up to 20 MHz and internal oscillators from 15 kHz to 32 MHz, with voltage-dependent frequency limits per operating mode (HS/LS/LV).

Does the R5F11AGJDNB#20 support over-the-air (OTA) firmware updates?

Yes, the R5F11AGJDNB#20 supports secure OTA updates via its self-programming capability and flash shield window function. The secure boot swap mechanism allows dual-bank firmware storage, enabling verified rollback and atomic update switching without interrupting BLE operation or compromising flash integrity.

How is the RF section powered and isolated on the R5F11AGJDNB#20?

The R5F11AGJDNB#20 uses dedicated power domains: AVDD_RF and VDD_RF supply the RF analog and digital sections, while AVSS_RF and VSS_RF serve as their respective grounds. These must be decoupled separately from the main VDD/VSS rails. The REGC pin requires a 0.47–1 µF capacitor to VSS to stabilize the internal RF regulator.

What BLE protocol features are hardware-accelerated in the R5F11AGJDNB#20?

The R5F11AGJDNB#20 includes a hardware AES encryption engine dedicated to BLE link-layer security, accelerating pairing, encryption, and decryption operations. It also implements Bluetooth v4.2 Low Energy Single Mode with adaptive frequency hopping and GFSK modulation entirely in hardware, offloading these tasks from the CPU.

Can the R5F11AGJDNB#20 operate without an external crystal?

Yes - the R5F11AGJDNB#20 can operate using its high-speed on-chip oscillator (1–32 MHz) for the main system clock and its 32.768 kHz on-chip oscillator for the RF slow clock. However, for Bluetooth specification compliance (±20 ppm accuracy), an external 32 MHz crystal (XTAL1_RF/XTAL2_RF) is required for the RF base clock; the on-chip RF oscillator is not specified for BLE use.