Renesas R5F100LJABG#U0

Overview

R5F100LJABG#U0 from Renesas is a 64-pin VFBGA-packaged RL78/G13 16-bit microcontroller with 256 KB flash, 8 KB data flash, 16 KB RAM, and industrial-grade operation up to +105°C. It delivers 41 DMIPS at 32 MHz, supports ultra-low-power modes (0.57 μA RTC+LVD), and integrates 12-bit ADC, RTC, UART, I²C, SPI, and DMA for embedded control in space-constrained applications.

For engineers reviewing the R5F100LJABG#U0 datasheet, R5F100LJABG#U0 pinout, R5F100LJABG#U0 application, or R5F100LJABG#U0 equivalent, key selection criteria include its VFBGA-64 (4 × 4 mm, 0.4 mm pitch) footprint, -40°C to +105°C temperature rating, integrated data flash rewrite capability, and RL78 CPU core's 3-stage pipeline with sub-μs instruction timing.

Technical Context

The R5F100LJABG#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It features dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog/RTC.

Peripherals include 12-bit interval timer, calendar-based real-time clock with alarm/correction, 10-bit 26-channel ADC with internal 1.45 V reference and temperature sensor, and three serial interface types-CSI (SPI-compatible), UART/LIN, and I²C-each configurable across multiple channels.

Key Specifications

Pinout & Package

VFBGA-64 package (4 × 4 mm, 0.4 mm pitch, BG suffix), 64-terminal ball grid array optimized for high-density PCB layouts and thermal performance in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LJABG#U0, R5F100LJAFB#V0 trades miniaturization for assembly flexibility, while R5F101LJABG#U0 removes data flash to lower unit cost - both retain full peripheral compatibility and industrial temperature support.

Availability

R5F100LJABG#U0 is available at Aetrix Electronics and suitable for smart metering, industrial motor drives, HVAC controllers, and white goods requiring stable component supply across extended product lifecycles.

Supply support for R5F100LJABG#U0 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/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for industrial control and consumer appliances.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100LJABG#U0?

The R5F100LJABG#U0 operates at up to 32 MHz, delivering 41 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator. The instruction timing is configurable down to 0.03125 μs per instruction, enabling deterministic real-time response in motor control and sensor fusion applications - all while maintaining ultra-low power consumption.

Does the R5F100LJABG#U0 support in-system programming and secure firmware updates?

Yes, the R5F100LJABG#U0 supports full on-chip debug via the FINE interface and includes robust self-programming capabilities. It features flash shield window protection, boot swap functionality, and block-level erase/write prohibition - enabling secure over-the-air (OTA) updates and preventing unauthorized code modification. These features are fully operational in the R5F100LJABG#U0 without external hardware.

What are the power management modes supported by the R5F100LJABG#U0, and what is the lowest current draw?

The R5F100LJABG#U0 supports HALT, STOP, and SNOOZE low-power modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA (typical) - critical for battery-powered meters and wireless sensors. Its 1.6–5.5 V supply range and on-chip POR/LVD with 14 selectable voltage thresholds further enhance reliability in fluctuating power environments.

How many analog input channels and what ADC resolution does the R5F100LJABG#U0 provide?

The R5F100LJABG#U0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It includes an internal 1.45 V reference voltage and a calibrated temperature sensor - both usable simultaneously with external channel sampling. This eliminates need for external references or thermal ICs in applications like motor temperature monitoring and environmental sensing.

Is the R5F100LJABG#U0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100LJABG#U0 shares identical pinout and electrical characteristics with other RL78/G13 devices in the VFBGA-64 package (BG suffix), including R5F100LCABG#U0 through R5F100LJABG#U0 and their G-grade counterparts. Memory size and peripheral enablement vary by part number, but I/O mapping, power, reset, and clock pins are functionally and physically consistent across this package group.