Renesas R5F10JBCANA#20

Overview

R5F10JBCANA#20 from Renesas Electronics is a 32-pin, 24 MHz RL78/G1C 16-bit microcontroller with integrated USB host/function controller, 32 KB flash, 5.5 KB RAM, and ultra-low-power operation down to 0.57 µA in Halt mode (RTC + LVD). It features an on-chip 24 MHz oscillator (±1% accuracy), 9-channel 10-bit ADC, and operates from 2.4 V to 5.5 V for USB-powered consumer devices.

For engineers reviewing the R5F10JBCANA#20 datasheet, R5F10JBCANA#20 pinout, R5F10JBCANA#20 application, or R5F10JBCANA#20 equivalent, key selection criteria include USB 2.0 full-speed support, 32-pin HWQFN (5 × 5 mm) package compatibility, low-voltage detection with 9 settings, and integrated RTC with calendar/alarm function for battery-backed timing.

Technical Context

The R5F10JBCANA#20 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It integrates dual USB transceivers (UDP0/UDM0 and UDP1/UDM1), dedicated USB voltage regulator (UVDD/UVBUS), and overvoltage/current protection pins (UOVRCUR0/1, UVBUSEN0/1).

Its peripheral set includes two I²C interfaces (IICA0 and IIC00/IIC01), two CSI/SPI channels, one UART, four 16-bit timer channels (TAU), and DMA with two programmable channels - all managed via the Peripheral I/O Redirection Register (PIOR) for flexible pin assignment.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10JGCANA#20, the R5F10JBCANA#20 trades I/O and ADC scalability for smaller footprint and lower system cost; versus R5F10KBCANA#20, it retains full USB host capability and dual-port protection-critical for USB OTG and charger emulation designs.

Availability

R5F10JBCANA#20 is available at Aetrix Electronics and suitable for USB HID peripherals, smart charging adapters, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F10JBCANA#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G1C product line targets cost-sensitive, USB-integrated consumer and industrial applications demanding ultra-low power, robust USB 2.0 compliance, and rapid time-to-market with minimal external components.

FAQ

What USB speed modes does the R5F10JBCANA#20 support?

The R5F10JBCANA#20 supports both full-speed (12 Mbps) and low-speed (1.5 Mbps) USB 2.0 operation. Its dual transceiver architecture (UDP0/UDM0 and UDP1/UDM1) enables simultaneous host and function roles, and it complies with Battery Charging Specification 1.2-including Apple MFi 2.1A/1.0A charging modes-making R5F10JBCANA#20 ideal for adaptive USB power delivery designs.

Does the R5F10JBCANA#20 include hardware-based safety features for industrial use?

Yes, the R5F10JBCANA#20 includes multiple IEC 60730 Class B–compliant safety features: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test. These are implemented in hardware and require no software overhead, ensuring R5F10JBCANA#20 meets functional safety requirements for industrial control and appliance applications.

What is the minimum supply voltage for the R5F10JBCANA#20, and how does it affect USB operation?

The R5F10JBCANA#20 operates from 2.4 V to 5.5 V. At 2.4 V, USB full-speed operation remains functional but requires careful layout of UVDD decoupling (1 µF to VSS) and strict control of USB signal integrity. The on-chip USB regulator maintains stable 3.3 V for the PHY across this range, and LVD can be configured down to 2.45 V to prevent brownout during USB enumeration-ensuring reliable R5F10JBCANA#20 operation in battery-powered USB devices.

Can the R5F10JBCANA#20's ADC measure internal temperature, and what is its accuracy?

Yes, the R5F10JBCANA#20 integrates an on-chip temperature sensor accessible via ANI19 (P120). When used with the internal 1.45 V reference and calibrated at room temperature, it achieves ±3°C typical accuracy across −40°C to +85°C. The 10-bit resolution and 2.1 µs conversion time allow R5F10JBCANA#20 to perform real-time thermal monitoring in USB peripherals without external sensors.

How is pin remapping implemented on the R5F10JBCANA#20, and which peripherals support it?

Pin remapping on the R5F10JBCANA#20 is controlled by the Peripheral I/O Redirection Register (PIOR), allowing dynamic assignment of serial interfaces (I²C, CSI), timers (TI0x/TO0x), and analog inputs (ANIxx) to alternate pins without hardware changes. Supported peripherals include IICA0, IIC00/IIC01, CSI00/CSI01, UART0, TAU channels, and ADC inputs-enabling R5F10JBCANA#20 design flexibility and layout optimization in space-constrained HWQFN layouts.