Renesas Electronics America Inc R5F100JCGFA#X0

R5F100JCGFA#X0 RL78/G13 Series Product Summary

The R5F100JCGFA#X0 microcontroller, part of the Renesas RL78/G13 family, is a 16-bit MCU suited for energy-efficient and general-purpose embedded applications. Packaged in a 52-pin LQFP (10x10 mm), it features 32 KB of flash memory, 32 MHz maximum operating frequency, and a host of integrated peripherals. Designed for broad voltage ranges (1.6–5.5 V), the RL78/G13 series addresses both consumer and industrial requirements, with extended temperature operation from –40°C up to +85°C for this part. Its flexible pinout and powerful platform cater to control, sensing, connectivity, and low-power needs in diverse sectors, including appliances, industrial control, and small IoT nodes.

R5F100JCGFA#X0 RL78/G13 Core Design and Processing Capabilities

At its core, the R5F100JCGFA#X0 employs the RL78 CISC architecture with a three-stage pipeline, executing instructions efficiently for a balance of speed and power. Capable of delivering up to 41 DMIPS at 32 MHz, the chip supports variable instruction execution times, from high-speed processing (0.03125 μs per instruction) down to ultra-low speed (30.5 μs, leveraging a 32.768 kHz subsystem clock). This configurability enables engineers to optimize processing for fast control loops or for ultra-low-power standby states, vital in battery-powered or always-on systems. Its address space spans up to 1 MB, supporting code scalability.

R5F100JCGFA#X0 RL78/G13 Memory Specifications and Data Management

Memory flexibility is a hallmark of the RL78/G13. The R5F100JCGFA#X0 integrates 32 KB code flash and 4–8 KB data flash, with on-chip RAM up to 32 KB, allowing efficient firmware storage and runtime data management. Flash features include security functions, block protection against unauthorized erase/rewrite, support for self-programming (enabling in-field updates), and robust reliability with up to 1,000,000 typical rewrite cycles (1.8–5.5 V voltage range). The data flash is accessible for background operation, so code can execute while flash is being rewritten, enabling robust logging or fail-safe operations in mission-critical designs.

R5F100JCGFA#X0 RL78/G13 Peripheral Options and System Integration

Comprehensive system integration is provided through abundant peripherals. The MCU offers:

DMA controller with up to four channels for efficient memory and peripheral data transfer.

Timer units: up to 16 channels 16-bit timers, real-time clock with calendar (99 years), interval and watchdog timers to enable event scheduling, accurate timekeeping, or fail-safe system resets.

Serial interfaces: 2–8 channels of Simplified SPI (CSI), 2–4 UART (LIN supported), and 3–10 channels of I²C/simplified I²C for versatile communications, including multi-voltage domain support (1.8/2.5/3 V), key for interfacing with a range of sensors and communication modules.

A/D converter: 8/10-bit resolution, with up to 26 analog input channels, on-chip temperature sensor, and internal reference voltage (1.45 V) facilitating robust mixed-signal designs.

I/O flexibility: 16–120 pins, configurable for open drain (6 V tolerance), TTL input buffer, and on-chip pull-up, with key interrupt and clock output support.

For external connectivity, peripheral I/O function assignment is configurable via the Peripheral I/O Redirection Register (PIOR), maximizing pin utility and layout flexibility in varying PCB designs.

R5F100JCGFA#X0 RL78/G13 Power Efficiency, Modes, and Control Features

The R5F100JCGFA#X0 is engineered for low power: consumption is as low as 66 μA/MHz in active mode, and 0.57 μA with only RTC and LVD circuits operating. Multiple standby and sleep modes—including HALT, STOP, and SNOOZE—empower designers to tune system runtime for energy savings. SNOOZE mode, for example, allows peripheral operation while the CPU is paused, lowering power without losing data acquisition or external event responsiveness. Integrated power-on reset (POR) circuitry and voltage detectors (LVD) with selectable interrupt/reset levels improve safety and simplify power sequencing at system start-up or brownout, especially in unreliable supply scenarios.

R5F100JCGFA#X0 RL78/G13 Electrical Properties and Interface Requirements

Robust electrical specs underpin flexible system design. The device supports both consumer/industrial-grade voltages (1.6–5.5 V, up to 85°C), and industrial extended (2.4–5.5 V, up to 105°C for 'G' models). All pins are tolerant to I/O voltage differences and can be interfaced to lower-voltage domains via open-drain or TTL configurations. Maximum operating currents and logic thresholds are given per duty-cycle, supporting both static and dynamic I/O loads; caution is advised to respect per-pin and total current limits for reliability. On-chip oscillator options (high-speed: 32/24/16/12/8/6/4/3/2/1 MHz; accurate to ±1% over wide voltage and temperature) simplify clock management and reduce BOM component count.

R5F100JCGFA#X0 RL78/G13 Analog Functions and Sensor Capabilities

Analog integration in the R5F100JCGFA#X0 equips engineers for sensor-rich applications. Its multi-channel 8/10-bit A/D converter supports flexible reference voltages, including VDD, dedicated analog pins, or an internal reference. With configurable conversion times and error specifications (+/- several LSB depending on reference and voltage), it is suitable for tasks ranging from simple switch-level sensing to more demanding analog signal monitoring. The built-in temperature sensor and reference voltage generator aid precision measurement and system calibration.

R5F100JCGFA#X0 RL78/G13 Environmental Specifications and Reliability

The MCU meets modern environmental and compliance standards. It is RoHS3 compliant and rated MSL 3, supporting reflow soldering and extended floor-life requirements. Its operating temperature grades span –40°C to +85°C for standard models and up to +105°C for industrial variants, with reliability supported by derating recommendations above +85°C. Flash and RAM retention mechanisms ensure dependable operation over years, with built-in protection for voltage dips (POR/LVD) and multi-mode data retention strategies.

R5F100JCGFA#X0 RL78/G13 Package Type, Pin Configuration, and Physical Characteristics

The 52-pin LQFP package (10x10 mm, 0.65-mm pitch) makes the R5F100JCGFA#X0 easy to integrate into standard PCB footprints. Careful attention to ground and power supply pin layout is necessary, with recommendations including dedicated Vss and EVss, as well as decoupling the REGC pin with 0.47–1 µF capacitance for stability. For EMI-sensitive applications, separate supply and ground domains are suggested. Complete pinout, packaging tolerances, and mechanical data are provided to support both design and manufacturing engineering processes.

R5F100JCGFA#X0 RL78/G13 Comparable or Substitute Models

Within the RL78/G13 family, engineers may consider the following equivalent or alternative models, selected based on required memory size, package type, or industrial temperature grade:

R5F100JCGFA#X0: 32 KB flash, 52-pin LQFP, –40°C to +85°C.

Other RL78/G13 series MCUs (e.g., R5F100xxAxx, R5F100xxDxx, R5F100xxGxx) are available with different flash/RAM sizes (16–512 KB), pin counts (20–128), and packages (TSSOP, QFN, WFLGA, LSSOP, VFBGA).

For applications requiring wider temperature support (+105°C), consider the R5F100xxGxx variants.

When higher memory requirements are present, models up to 512 KB flash in larger packages (up to 128 pins) are available.

Reference should be made to Renesas’s RL78/G13 product selector for compatibility and pin/package matching to ensure seamless migration or design modification.

Conclusion

The Renesas R5F100JCGFA#X0 RL78/G13 microcontroller is a robust, energy-efficient solution for embedded designs demanding low power, broad voltage flexibility, and abundant system integration. With its scalable memory, rich peripherals, configurable sleep modes, and comprehensive analog/digital I/O capabilities, it enables engineers to address diverse control, sensing, and connectivity challenges. Attention to electrical and mechanical specifics, alongside the family’s broad selection of compatible models, makes the RL78/G13 series an excellent platform for scalable, efficient product design in today’s competitive market.