Renesas Electronics America Inc R5F101GKAFB#50

Mfr. Part

R5F101GKAFB#50

Manufacturer

Renesas Electronics Corporation

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Detailed Description

RL78/G13 16-bit microcontroller with 384KB Flash and 24KB RAM

32MHz CPU speed, internal oscillator, wide supply 1.6V to 5.5V

48-LQFP (LFQFP) 7x7mm package for surface mount

34 user I/O pins, industrial temperature -40°C to +85°C (TA)

Peripherals: DMA, LVD, POR, PWM, WDT; 10-channel ADC with 8/10-bit modes

Connectivity: CSI (SPI-like), I2C, LIN bus, UART/USART

Program memory type FLASH; series RL78/G13; base product number R5F101

RoHS3 compliant; supplied in Tape & Reel

Category: Integrated Circuits (ICs) / Embedded Microcontrollers

Key Features

RL78 16-bit CPU up to 32MHz for fast, efficient control

384KB Flash for complex firmware and OTA-style updates

24KB RAM to handle buffers, stacks, and real-time tasks

10-channel ADC with selectable 8/10-bit conversion for flexible sensing

Timers and PWM for precise control of motors, LEDs, and power stages

DMA for fast data moves without CPU overhead

Safety and reliability: watchdog timer, power-on reset, low-voltage detector

Serial interfaces: CSI (SPI), I2C, LIN, UART/USART for broad connectivity

Internal oscillator with option for external crystal/resonator

34 programmable GPIO in a compact 48-pin footprint

Wide voltage 1.6V to 5.5V supports 3.3V and 5V systems

Industrial temperature -40°C to +85°C

RoHS3 compliance for modern environmental standards

Key Advantages

Low power design and deep sleep modes extend battery life

Big Flash and RAM enable feature-rich applications and secure updates

Wide voltage range simplifies mixed-voltage system design

Rich integrated peripherals reduce external components and total BOM cost

Proven RL78 platform with strong toolchain and long-term availability

Flexible pin multiplexing and 34 I/O ease board layout and expansion

Robust operation with built-in LVD, POR, and WDT protection

Packaging

Type: 48-LQFP (also listed as 48-LFQFP), plastic, gullwing leads, low-profile

Body size: 7mm x 7mm; typical thickness ~1.4mm; lead pitch typically 0.5mm

Pin configuration: 48 pins total; around 34 GPIO; dedicated VDD/VSS; reset; oscillator pins; multiplexed serial, timer, and ADC inputs

Supplier device package: 48-LFQFP (7x7)

Tape & Reel: TR per EIA-481 standard for automated pick-and-place

Mounting: surface mount; compatible with leaded-reflow soldering profiles; follow JEDEC MSL handling (see datasheet for exact MSL)

Thermal characteristics: rated -40°C to +85°C ambient; thermal resistance depends on PCB stackup and copper area; use ground planes and thermal vias for better heat spreading; consult datasheet for θJA/θJC

Electrical properties: VDD 1.6V to 5.5V; CPU up to 32MHz; internal oscillator; ADC 8/10-bit; serial interfaces as listed; refer to datasheet for precise limits, ESD ratings, and timing

Lifecycle

Current status: Active, widely deployed RL78 family device, not near discontinuation based on publicly available information

Same-brand alternatives:

- RL78/G13 family variants with different Flash/RAM sizes and packages for cost and footprint optimization

- RL78/G14 for more advanced timers and features if higher control performance is needed

- RL78/G12 for smaller, cost-optimized designs

- Renesas RA2E1 (Arm Cortex-M23) or RX130 (32-bit) if you prefer modern 32-bit cores and advanced features

Cross-vendor functional alternatives (not pin-compatible):

- Microchip PIC24F/PIC24E series

- NXP S12/S12X 16-bit MCUs

- TI MSP430 low-power MCUs

- ST STM8 for simple 8-bit needs

Exact pin-compatible and feature-matched substitutes within the 48-LQFP footprint depend on your board and firmware. Contact Y-IC sales via our website for a detailed, project-specific cross-reference and availability check

Key Application Areas

Automotive body electronics, LIN bus nodes, window/seat controllers

Industrial control, sensors, HMI panels, PLC add-on modules

Home appliances and white goods control boards

Motor control for fans, pumps, and small drives via PWM and timers

Power management, chargers, and 5V/3.3V mixed systems

Smart meters, data loggers, instrumentation with ADC sensing

Consumer electronics, remote controllers, gaming accessories

IoT edge devices needing ultra-low power and robust serial connectivity

Datasheet

Our website hosts the most authoritative datasheet and documentation for this model. Download it from this page for complete electrical specifications, pin maps, timing diagrams, programming details, and design guidelines

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