Renesas R5F11AGJANB#20

Overview

R5F11AGJANB#20 from Renesas Electronics is a Bluetooth Low Energy 4.2 single-mode SoC 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 devices.

For engineers reviewing the R5F11AGJANB#20 datasheet, R5F11AGJANB#20 pinout, R5F11AGJANB#20 application, or R5F11AGJANB#20 equivalent, key selection criteria include integrated BLE v4.2 compliance, RF sleep current of 0.3 μA, 48-pin HWQFN package with RF-specific GPIOs (GPIO0–GPIO3), and support for AES-encrypted over-the-air updates in embedded BLE node designs.

Technical Context

The R5F11AGJANB#20 implements a Harvard-architecture RL78-S2 CPU with 3-stage pipeline, supporting instruction execution times from 0.03125 μs (@32 MHz) to 30.5 μs (@32.768 kHz). Its RF subsystem includes GFSK modulation, TDMA/TDD frequency hopping, and an integrated AES encryption circuit - all dedicated to slave-mode operation per Bluetooth v4.2 LE specifications.

It features dual-clock domains: a main system clock (up to 32 MHz via high-speed on-chip oscillator or external crystal) and a dedicated 32.768 kHz RF slow clock. The RF unit uses separate analog power rails (AVDD_RF/VSS_RF) and provides four GPIOs (GPIO0–GPIO3) for external PA/LNA control and clock output (CLKOUT_RF/EXSLK_RF).

Key Specifications

Pinout & Package

48-pin HWQFN (6 × 6 mm, 0.4 mm pitch) with exposed thermal pad (GND1). RF section uses dedicated power/ground pins (VDD_RF, AVDD_RF, VSS_RF, AVSS_RF) and crystal connections (XTAL1_RF/XTAL2_RF). Antenna interface is single-ended via ANT pin.

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 R5F11AGJANB#20 delivers superior ultra-low-power performance in BLE slave roles, simpler RF integration via dedicated GPIOs and DC-DC support, and hardware-accelerated security - making it optimal for cost-sensitive, long-life, sensor-edge applications.

Availability

R5F11AGJANB#20 is available at Aetrix Electronics and suitable for smart wearables, industrial wireless sensors, and medical diagnostic patches requiring stable component supply, extended lifecycle support, and consistent RF performance across production batches.

Supply support for R5F11AGJANB#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G1D product line integrates BLE 4.2 radio and RL78 CPU in a single chip to simplify development of ultra-low-power wireless sensor nodes and consumer BLE peripherals.

FAQ

What is the maximum operating frequency of the R5F11AGJANB#20 CPU core?

The R5F11AGJANB#20 features a 16-bit RL78-S2 CPU core with a maximum operating frequency of 32 MHz, achievable using the high-speed on-chip oscillator in HS mode at VDD ≥ 2.7 V. At lower voltages (1.6–2.4 V), the max frequency scales down to 4–16 MHz depending on operating mode, ensuring robust timing across wide voltage ranges.

Does the R5F11AGJANB#20 support Bluetooth 5.x features such as long-range or higher data rates?

No, the R5F11AGJANB#20 implements Bluetooth v4.2 Low Energy Single Mode only. It does not support Bluetooth 5.x features including coded PHY (long range), 2 Mbps PHY, or advertising extensions. Its RF subsystem is strictly compliant with v4.2 LE specifications and operates exclusively in slave role with adaptive frequency hopping.

How much user-accessible RAM is available on the R5F11AGJANB#20?

The R5F11AGJANB#20 provides 20 KB of on-chip RAM, fully accessible to firmware for variables, stack, heap, and BLE protocol stack buffers. When self-programming functionality is enabled, usable RAM reduces to approximately 19 KB due to reserved space for flash write operations.

Can the R5F11AGJANB#20 operate without an external crystal?

Yes, the R5F11AGJANB#20 can operate without external crystals using its internal oscillators: a high-speed on-chip oscillator (1–32 MHz) for the main system clock and a 32.768 kHz on-chip oscillator for the RF slow clock. External crystals (X1, XT1, XTAL1_RF) are optional and used only when higher frequency accuracy or stability is required.

What RF-related GPIOs are available on the R5F11AGJANB#20 and what are their functions?

The R5F11AGJANB#20 provides four dedicated RF GPIOs: GPIO0/TXSELH_RF and GPIO1/TXSELL_RF control external high-side/low-side PA/LNA enable lines; GPIO2/CLKOUT_RF outputs 16/8/4 MHz RF clocks; GPIO3/EXSLK_RF accepts 32.768 kHz external slow clock input for RF block synchronization - all electrically isolated from main MCU I/O.