Renesas Electronics America Inc R5F100LCGFB#X0

R5F100LCGFB#X0 RL78/G13 Product Summary

The Renesas R5F100LCGFB#X0 is a 16-bit microcontroller within the RL78/G13 family, engineered for general-purpose applications demanding power efficiency, flexible I/O, and robust connectivity. Housed in a 64 LFQFP package, the device integrates 32KB of flash memory and operates at frequencies up to 32MHz, delivering up to 41 DMIPS in performance. This model caters to a wide range of application environments, including both consumer (−40°C to +85°C) and industrial (up to +105°C) temperature specifications, supporting reliable system design under challenging conditions.

R5F100LCGFB#X0 RL78/G13 System Structure and Core Functions

At the heart of the R5F100LCGFB#X0 is the RL78 CPU core, utilizing a CISC architecture with a 3-stage pipeline for efficient instruction execution. The device handles minimum instruction execution times as fast as 0.03125µs at 32MHz and as slow as 30.5µs at 32.768kHz, enabling dynamic power-performance scaling over its full 1MB address space. With four banks of 8-bit general-purpose registers and up to 32KB of RAM, the architecture is tailored for multifaceted embedded control tasks, from complex signal processing to real-time response scenarios.

R5F100LCGFB#X0 RL78/G13 Power Modes and Energy Efficiency Features

Efficient power management is a cornerstone of the RL78/G13 series, and R5F100LCGFB#X0 features multiple low-power operation modes: HALT, STOP, and SNOOZE. The device achieves as low as 66µA/MHz in active operation, and can drop to 0.57µA when only RTC and LVD subsystems are enabled. It operates across a flexible voltage range (1.6V to 5.5V), supporting both low-voltage and full-range applications. Integrated modules such as the power-on-reset (POR) and low-voltage detector (LVD, with 14 selectable levels) add layers of resilience for safe startup and operating watchdog coverage.

R5F100LCGFB#X0 RL78/G13 Storage Capabilities and Security Mechanisms

Flash memory management is central to embedded design efficiency. The R5F100LCGFB#X0 offers 32KB code flash (with block sizes of 1KB), supporting secure rewrite/erase protection and self-programming—critical for systems needing dynamic firmware updates. Accompanying this is a data flash memory (4-8KB) capable of 1,000,000 typical rewrite cycles, ensuring longevity in data logging or settings retention applications. Security functions prohibit unauthorized block modification, and advanced debugging interfaces are available for development but recommended to be disabled in production for maximum reliability.

R5F100LCGFB#X0 RL78/G13 Built-in Modules and Communication Ports

Comprehensive serial and parallel interfaces are provided for broad connectivity. The R5F100LCGFB#X0 incorporates:

Simplified SPI (CSI), UART/LIN (2–4 channels), and I²C (3–10 channels) solutions, supporting both sameand different-potential communications with detailed baud rate controls.

Versatile timers, featuring 16-bit (8–16 channels), interval, real-time calendar clocks (with correction/alarm), and a dedicated watchdog—all managed by flexible hardware clocks.

Direct Memory Access (DMA) channels (2/4) and arithmetic units for fast multiplications/divisions/multiply-accumulate operations, optimizing tasks such as sensor input processing or control loops.

Digital I/O counts scale with package size, offering 16 to 120 lines, configurable for open-drain, TTL, and pull-up arrangements—supporting direct interface with external devices operating at 1.8V, 2.5V, or 3V.

R5F100LCGFB#X0 RL78/G13 Analog Operations and A/D Converter Details

A robust analog subsystem equips engineers with precision conversion capabilities. The on-chip A/D converter supports both 8-bit and 10-bit resolution across 6–26 input channels, usable with supply voltages from 1.6V to 5.5V. Reference input is flexible, supporting external, internal, and temperature sensor voltage for diverse measurement requirements. Key specification parameters, such as overall error, zero-scale/full-scale error, and linearity, are tightly controlled, with options for calibration under varying reference voltages and conversion times optimized for low-latency sensing.

R5F100LCGFB#X0 RL78/G13 Electrical Specifications for Commercial and Industrial Use

Electrical performance in R5F100LCGFB#X0 varies across consumer (A type) and industrial (D/G types) applications, each tailored for specific operational temperatures (up to +85°C for A/D, +105°C for G). Absolute maximum ratings, oscillator characteristics (X1, XT1, and high-speed on-chip oscillators), and pin current capacities are well-defined, ensuring safe operation under varied duty cycles and peripheral loads. The device supports multiple supply voltage domains and pin arrangements, with recommendations for decoupling and noise management in sensitive environments.

R5F100LCGFB#X0 RL78/G13 Package Options and Pin Assignment

Package diversity within the RL78/G13 series accommodates a spectrum of integration needs, with the R5F100LCGFB#X0 specifically provided in a 64-LFQFP (10x10mm) format at 0.5mm pitch. Critical design practices, including proper handling of REGC pins, assignment of ground and supply lines, and use of Peripheral I/O Redirection Registers (PIOR), ensure signal integrity and system robustness. For applications sensitive to noise or requiring multiple supply domains, the device facilitates separate power/ground pathways.

R5F100LCGFB#X0 RL78/G13 Flash Storage Programming and Data Preservation

In-system flash programming is supported, with precise timing and voltage specifications outlined for seamless updates via UART-based protocols. Data retention is guaranteed down to thresholds governed by internal POR detection—impacting both code and RAM contents during voltage sag scenarios. Field update systems benefit particularly from automated programming modes and high data endurance.

R5F100LCGFB#X0 RL78/G13 Environmental Standards and Long-Term Dependability

The R5F100LCGFB#X0 upholds advanced reliability with ROHS3 compliance and a moisture sensitivity level (MSL) of 3 (integrity for 168 hours). The series includes robust derating recommendations for operation above +85°C, and careful guidance for development features such as the debug interface, which should not be used in production due to flash memory rewrite cycle limitations.

R5F100LCGFB#X0 RL78/G13 Comparable and Substitute Device Models

Within the RL78/G13 product series, multiple models with varied flash, RAM, and package configurations are available. For direct replacement or variant selection, refer to the broader RL78/G13 line, such as other R5F100LCGFB models differing in memory sizes or pin counts. Selection should be made considering required I/O, memory, operating temperature range, and package footprint. For further alternatives, review application-specific RL78/G1x devices, and consult Renesas for the most up-to-date model alignment.

Conclusion

The R5F100LCGFB#X0 RL78/G13 microcontroller delivers a versatile blend of low-power, high-performance processing, extensive memory options, and rich integrated peripherals. Its robust architectural foundation and rigorous compliance make it suitable for demanding industrial and consumer applications, while extensive configurability and reliable operation empower engineers and procurement professionals to deploy solutions with confidence across diverse embedded environments. For new designs and maintenance strategies, the R5F100LCGFB#X0 serves as a reference point within the RL78/G13 family for scalable, future-ready system architectures.