Renesas R5F100LJGBG#U0

Overview

R5F100LJGBG#U0 from Renesas is a 64-pin VFBGA-packaged RL78/G13 16-bit microcontroller with 256 KB flash, 8 KB data flash, and 16 KB RAM, operating from 1.6–5.5 V at -40°C to +105°C. It delivers 41 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD), and integrates 16-bit timers, 10-bit ADC (26 channels), UART/SPI/I²C interfaces, and real-time clock for industrial control and sensor node applications.

For engineers reviewing the R5F100LJGBG#U0 datasheet, R5F100LJGBG#U0 pinout, R5F100LJGBG#U0 application, or R5F100LJGBG#U0 equivalent, key selection criteria include its industrial-grade temperature range, VFBGA-64 (4×4 mm, 0.4-mm pitch) footprint, integrated data flash with 1M rewrite cycles, background operation capability, and support for SNOOZE mode in battery-powered systems.

Technical Context

The R5F100LJGBG#U0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 256 KB code flash (1 KB block size), 8 KB data flash with background operation (BGO), and 16 KB on-chip RAM.

Peripheral integration includes up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 16-bit timer array (16 channels), real-time clock with calendar/alarm/correction, watchdog timer, DMA controller (4 channels), and multi-protocol serial interfaces: CSI (SPI-compatible), UART/LIN (4 channels), and I²C (10 channels).

Key Specifications

Pinout & Package

VFBGA-64 package (4 × 4 mm, 0.4-mm pitch), 64-terminal ball grid array with standard I/O, analog, power, and clock functions distributed across perimeter rows. Ball pitch and land pattern conform to JEDEC MO-220 VFBGA specifications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LJGBG#U0, R5F101LJGBG#U0 removes data flash to lower unit cost but retains full functional compatibility for code-only use cases, while R5F100LJFAFA#V0 offers identical feature set in a more manufacturable LQFP package-enabling drop-in substitution only in mechanically adaptable designs.

Availability

R5F100LJGBG#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, PLC I/O modules, and home appliance control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F100LJGBG#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 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications demanding robust operation from -40°C to +105°C with integrated analog and communication peripherals.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100LJGBG#U0?

The R5F100LJGBG#U0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its minimum instruction execution time is 0.03125 μs under this condition, and it supports dynamic clock switching down to 32.768 kHz for ultra-low-power RTC operation. This dual-speed capability enables both high-throughput control tasks and energy-efficient background monitoring within the same R5F100LJGBG#U0 device.

Does the R5F100LJGBG#U0 include an integrated temperature sensor, and how is it used?

Yes, the R5F100LJGBG#U0 includes a factory-calibrated on-chip temperature sensor usable only in HS (high-speed main) mode. It connects to the 10-bit ADC and provides system-level thermal monitoring without external components. The sensor output is digitized alongside other analog inputs, enabling closed-loop thermal management or ambient condition logging directly in firmware-no additional ICs or calibration effort required for the R5F100LJGBG#U0.

How does the data flash memory in the R5F100LJGBG#U0 support field firmware updates?

The R5F100LJGBG#U0's 8 KB data flash supports background operation (BGO), allowing program execution from code flash while simultaneously rewriting data flash contents. With 1,000,000 write cycles and 1.8–5.5 V programming voltage, it enables safe storage of calibration data, device configuration, or encrypted keys. The R5F100LJGBG#U0 also includes flash shield window and boot swap functions to protect critical firmware during over-the-air or local update sequences.

What packaging and thermal specifications make the R5F100LJGBG#U0 suitable for industrial environments?

The R5F100LJGBG#U0 uses a VFBGA-64 package (4 × 4 mm, 0.4-mm pitch) qualified for operation from -40°C to +105°C (G-grade), meeting industrial reliability requirements. Its on-chip power-on-reset (POR) and 14-level voltage detector (LVD) provide robust brown-out protection across wide supply variations. These features-combined with 6 V-tolerant I/O and AEC-Q100 Class 2 stress qualification-make the R5F100LJGBG#U0 appropriate for harsh industrial control cabinets and outdoor sensor enclosures.

Can the R5F100LJGBG#U0 operate from a single-cell lithium battery, and what low-power modes are available?

Yes, the R5F100LJGBG#U0 supports 1.6 V minimum supply voltage, enabling direct operation from a partially discharged single-cell Li-ion or LiFePO₄ battery. It offers HALT (sub-μA), STOP (0.57 μA with RTC+LVD), and SNOOZE modes that retain RAM and selectively clock peripherals. In STOP mode, the R5F100LJGBG#U0 maintains real-time calendar tracking and voltage monitoring while consuming less than 1 μA-ideal for multi-year battery deployments in remote sensor nodes.