Renesas Electronics America Inc R5F100GKDFB#10

R5F100GKDFB#10 RL78/G13 Microcontroller Product Summary

The R5F100GKDFB#10, a member of the RL78/G13 series from Renesas Electronics Corporation, is a highly integrated 16-bit microcontroller (MCU) platform tailored for demanding but cost-sensitive embedded applications. Notable for its ultra-low-power operation, wide voltage range, and extensive peripheral integration, this MCU is suited for use in consumer, industrial, and battery-powered designs. It operates at up to 32 MHz, features 384 KB of flash memory, and is housed in a compact 48-pin LFQFP (7x7 mm) package.

The R5F100GKDFB#10 RL78/G13 Architecture and Core Capabilities

At the heart of the R5F100GKDFB#10 is Renesas’s RL78 CPU core. This core employs a CISC architecture with a three-stage pipeline and delivers an efficient blend of performance (up to 41 DMIPS at 32 MHz) and power savings. The RL78/G13 supports a single-supply voltage operation (1.6–5.5 V) and integrates a high-speed, on-chip oscillator selectable from 1–32 MHz with ±1% accuracy across the recommended voltage and temperature range.

Key architectural highlights include:

Flexible instruction timing: execution ranges from 0.03125 µs (@32 MHz) to 30.5 µs (@32.768 kHz) for highly adaptive power/performance scaling.

1 MB address space and multiple general-purpose register banks (8-bit registers, 4 banks).

On-chip RAM ranging from 2 KB up to 32 KB, facilitating efficient real-time multitasking.

Multiple low-power modes (HALT/STOP/SNOOZE) enable finely-grained management of power consumption aligned to application workloads and sleep needs.

Memory Layout and Firmware Development for R5F100GKDFB#10 RL78/G13

The R5F100GKDFB#10 delivers a robust embedded memory subsystem. Its 384 KB of code flash (organized in 1 KB blocks) supports both application storage and secure update operations. Security features include prohibition of block erase/rewrite and a flash shield window to limit access. Additionally, 4–8 KB of data flash is present for non-volatile data, with up to 1,000,000 rewrites typical, supporting reliable parameter or event logging.

Notable features for developers:

Self-programming and boot swap functionality for robust field upgrades.

Fast, accurate in-system programming, with specific timings and voltage ranges.

On-chip debug capability for accelerated development (note: not intended for use in mass-production due to flash endurance).

Reliable RAM data retention down to POR (Power-On Reset) voltage thresholds, critical for power-fail safe storage.

Energy Control and Power Saving Features in R5F100GKDFB#10 RL78/G13

Ultra-low-power operation is a key differentiator for the RL78/G13 family and the R5F100GKDFB#10. The MCU achieves active mode consumption as low as 66 µA/MHz, and in standby (STOP mode with only RTC/LVD active) current drops to just 0.57 µA. Its design features:

Wide operating range (1.6–5.5 V) supporting both legacy and modern low-voltage system designs.

Integrated system-wide power-on-reset (POR) and voltage detection (LVD) circuits programmable across 14 levels, ensuring reliable startup and brownout protection.

Advanced standby and wakeup strategies, with HALT/STOP/SNOOZE modes, enabling system-level battery lifetime maximization and fast wake times for interrupt-driven scenarios.

Built-in Interfaces and Analog Capabilities of R5F100GKDFB#10 RL78/G13

The R5F100GKDFB#10 RL78/G13 offers an impressive suite of peripherals tailored for mixed-signal and complex real-time applications:

Timers: Up to 16 channels of 16-bit timers, 1 x 12-bit interval timer, real-time clock (99-year calendar), and dedicated watchdog timer.

Communication interfaces: Up to 10 channels of I2C/simplified I2C, 8 channels of simplified SPI (CSI), and up to 4 UART (with LIN bus support) channels for versatile connectivity.

Analog functions: 8/10-bit A/D converters, up to 26 analog inputs, plus temperature sensor and 1.45V internal voltage reference for accurate analog measurement.

DMA controller: Supports 2/4 channels of direct memory access for high efficiency data movement with minimal CPU intervention.

Enhanced I/O: Up to 120 programmable I/O lines across package variants, with support for different voltage tolerant open drain, TTL input buffers, on-chip pull-ups, and flexible peripheral I/O redirection.

Additional features: On-chip BCD correction, hardware multiplier/divider and accumulate, key/buzzer output, and multi-potential interfacing (1.8/2.5/3 V devices).

Electrical and Heat Specifications R5F100GKDFB#10 RL78/G13 Performance in Diverse Conditions

R5F100GKDFB#10 RL78/G13 is engineered for robust performance across both consumer and industrial operating conditions:

Standard variants: –40°C to +85°C (A: consumer, D: industrial)

Extended industrial variants: up to +105°C (G: industrial)

It maintains stable function across a 1.6–5.5 V range, with specified derating and reliability guidance for higher temperature operation. Power supply and I/O pin current limits, as well as absolute maximum ratings, guide robust design for system longevity.

Electromagnetic compatibility and analog accuracy are further enhanced by recommended pin connection schemes (e.g., separate analog/digital supplies for noise-sensitive applications, careful use of Vss, EVss, and REGC pins).

Available Package Types and Pin Configurations for R5F100GKDFB#10 RL78/G13

The RL78/G13 family—and the R5F100GKDFB#10 model—offers a diverse range of package and pinout options to suit various board-level constraints and I/O requirements. The specific R5F100GKDFB#10 configuration described is a 48-pin LFQFP (7x7 mm) package. Other series members range from 20-pin (TSSOP/LSSOP), through 24/25/30/32/36/40/44/52/64/80/100/128-pin configurations—including space-saving QFN, LGA, and VFBGA choices.

Each pinout variant is precisely defined, with guidance for optimal supply routing, pin assignment, REGC external capacitor requirements, and the use of peripheral I/O redirection (PIOR) for maximizing flexibility.

Alternative and Substitute Options for R5F100GKDFB#10 RL78/G13

For engineers tasked with lifecycle management, cost optimization, or second-sourcing, understanding equivalent or replacement parts within the RL78/G13 series is crucial. Depending on system requirements, models are available with varying flash/RAM sizes (from 16 KB to 512 KB), alternative package types (QFP, QFN, LSSOP, LQFP, VFBGA, LGA), and maximum operating temperature extensions (“G” variants for up to 105°C). Within Renesas’s RL78/G13 product line, direct replacements can often be made by matching code and data memory sizes and maintaining pin compatibility, subject to supply voltage range and package constraints.

For applications requiring even broader portfolio coverage, considering the wider RL78 family or alternative series within Renesas's MCU offerings may be appropriate, with attention to migration support and software ecosystem compatibility. Always consult the manufacturer’s latest documentation for verified, up-to-date part numbers and supported variants.

Conclusion

: Selecting R5F100GKDFB#10 RL78/G13 for embedded system designs

The R5F100GKDFB#10 RL78/G13 microcontroller stands out as a reliable, efficient, and highly integrated platform for modern embedded systems—where low power consumption, rich connectivity, analog capability, and flexibility across application domains are required. The combination of configurable peripherals, robust memory and security features, extended temperature performance, and broad packaging options enables engineers and procurement specialists to confidently match the R5F100GKDFB#10 RL78/G13 to a wide range of use cases, from portable consumer products to industrial automation equipment. Careful attention to the device’s detailed specifications and part selection guide ensures optimal system-level outcomes throughout the product lifecycle.