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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Renesas R5F100GEGNA#20

Name: R5F100GEGNA#20
Brand: Renesas
SKU: R5F100GEGNA#20
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R5F100GEGNA#20

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 48-WFQFN Exposed Pad

Datasheet:: R5F100GEGNA#20.pdf

Description:: IC MCU 16BIT 64KB FLASH 48HWQFN

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Product details

Overview

R5F100GEGNA#20 from Renesas is a 48-pin, 128 KB flash, 8 KB data flash, 12 KB RAM RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), 1.6–5.5 V supply, and industrial-grade −40°C to +105°C operation. It integrates 16-bit timer (12 channels), 10-bit ADC (26 channels), UART/SPI/I²C interfaces, RTC, and hardware multiplier for smart sensor, motor control, and industrial HMI applications.

For engineers reviewing the R5F100GEGNA#20 datasheet, R5F100GEGNA#20 pinout, R5F100GEGNA#20 application, or R5F100GEGNA#20 equivalent, key selection criteria include its HWQFN-48 package with 0.5-mm pitch, G-grade temperature rating, integrated data flash with 1M rewrite cycles, background operation during program execution, and support for SNOOZE mode for low-latency wake-up in battery-powered systems.

Technical Context

The R5F100GEGNA#20 implements the RL78 CPU core with 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 128 KB on-chip code flash (1 KB block size), 8 KB data flash with background operation (BGO), and 12 KB RAM - all accessible under single 1.6–5.5 V supply.

Peripherals are tightly coupled to power management: DMA controller (4 channels), 12-bit interval timer, real-time clock with calendar/alarm/correction, watchdog timer with dedicated low-speed oscillator, and 10-bit A/D converter with internal 1.45 V reference and temperature sensor. All operate within −40°C to +105°C ambient range without derating.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing and low-energy per instruction.
Max Operating Frequency	32 MHz using high-accuracy on-chip oscillator (±1.0% over −20 to +85°C); eliminates external crystal for cost-sensitive designs.
Flash Memory	128 KB code flash with 1 KB erase blocks and security lock; supports self-programming with boot swap and flash shield window.
Data Flash	8 KB with background operation (BGO); allows concurrent code execution while rewriting - critical for firmware updates and data logging.
Power Consumption	66 μA/MHz active current; 0.57 μA in STOP mode with RTC + LVD active - enables >10-year battery life in metering applications.
ADC Resolution & Channels	10-bit SAR ADC with up to 26 analog inputs and internal 1.45 V reference; supports direct temperature sensing and precision sensor interfacing.
Operating Temperature	−40°C to +105°C (G-grade); qualified for industrial motor drives, HVAC controllers, and automotive cabin modules.

Pinout & Package

R5F100GEGNA#20 uses a 48-pin HWQFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad (PWQN0048KE-A / PWQN0048KG-A), optimized for compact industrial PCB layouts and thermal dissipation in sealed enclosures.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports single 1.6–5.5 V supply without external regulators.
P00–P07, P10–P17, P20–P27, P30–P37	General-purpose I/O ports	48 total I/O pins; configurable as N-ch open drain (6 V tolerant), TTL input, or with on-chip pull-up - enables mixed-voltage interface (1.8/2.5/3.3 V).
P10/P11/P12/P13	CSI0/SI00/SO00/SCK00	Hardware SPI interface with independent clock/data lines; supports daisy-chain sensor networks and fast peripheral control.
P14/P15	SCL00/SDA00	Dedicated I²C bus pins with slew-rate control; compatible with standard 100/400 kHz protocols for EEPROM, PMIC, and sensor communication.
P30/P31	RxD0/TxD0	Full-duplex UART with LIN-bus support; enables diagnostics, firmware updates, and host MCU communication in automotive and industrial gateways.
P20/P21	ANI0/ANI1 (AVREFP/AVREFM)	Differential analog reference inputs for 10-bit ADC; improves noise immunity and measurement accuracy in noisy industrial environments.

Key Features

Feature	Design Value
Ultra-low-power STOP mode	0.57 μA with RTC + LVD active - enables decade-long operation on coin-cell batteries in remote sensors.
Background Data Flash Operation (BGO)	Execute code from flash while rewriting data flash; eliminates interrupt latency during firmware parameter updates or event logging.
Hardware Multiply-Accumulate (MAC)	16×16→32-bit signed/unsigned multiply + 32-bit add in single cycle; accelerates PID control loops and digital filtering in motor drives.
Real-time Clock with Calendar	99-year calendar, alarm, and auto-correction; provides time-stamped data logging and scheduled wake-up without external RTC IC.
On-chip Voltage Detector (LVD)	14-level programmable reset/interrupt threshold; protects against brown-out in wide-input industrial power supplies (e.g., 12–24 V DC-DC outputs).
SNOOZE mode	Low-latency wake-up from STOP mode via serial interface or timer - ideal for responsive human-machine interfaces and touch-button controllers.

Applications

Smart Energy Metering	Industrial Motor Control
Use Scenario: Residential and commercial electricity meters requiring long-life battery backup, tamper detection, and time-of-use billing. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, RTC-based tariff switching, secure flash storage of consumption logs, and optical/IR communication. Use Value: 0.57 μA STOP mode extends CR2032 battery life beyond 12 years; integrated 10-bit ADC with internal reference eliminates external precision references.	Use Scenario: Brushless DC (BLDC) motor drives in HVAC blowers, pumps, and compressors operating in harsh industrial environments. IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithms, reading hall sensors/encoders, driving 3-phase gate drivers, and monitoring thermal/voltage faults. Use Value: Hardware MAC unit computes PID and Clarke/Park transforms in <1 μs; −40°C to +105°C rating ensures reliability inside sealed motor housings.
Programmable Logic Controllers (PLC) I/O Modules	Medical Patient Monitoring Devices
Use Scenario: DIN-rail mounted digital I/O expansion modules with isolated inputs/outputs and fieldbus connectivity. IC Role / Device Role / Timing Role: Local intelligence node handling opto-isolated input debouncing, PWM output generation, CAN/LIN communication, and diagnostic LED control. Use Value: 48 GPIOs with 6 V tolerance simplify interface to 24 V industrial logic; SNOOZE mode enables sub-100 μs response to field input changes.	Use Scenario: Portable ECG, SpO₂, and temperature monitors requiring FDA-compliant low-power design and clinical-grade signal integrity. IC Role / Device Role / Timing Role: Signal acquisition hub digitizing analog biosignals, performing baseline correction, storing waveform snippets, and transmitting via BLE or USB. Use Value: On-chip 1.45 V reference and temperature sensor enable calibrated measurements without external components; BGO allows continuous data streaming during flash writes.

Smart Energy Metering

Industrial Motor Control

Use Scenario: Residential and commercial electricity meters requiring long-life battery backup, tamper detection, and time-of-use billing.

IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, RTC-based tariff switching, secure flash storage of consumption logs, and optical/IR communication.

Use Value: 0.57 μA STOP mode extends CR2032 battery life beyond 12 years; integrated 10-bit ADC with internal reference eliminates external precision references.

Use Scenario: Brushless DC (BLDC) motor drives in HVAC blowers, pumps, and compressors operating in harsh industrial environments.

IC Role / Device Role / Timing Role: Real-time motion controller executing FOC algorithms, reading hall sensors/encoders, driving 3-phase gate drivers, and monitoring thermal/voltage faults.

Use Value: Hardware MAC unit computes PID and Clarke/Park transforms in <1 μs; −40°C to +105°C rating ensures reliability inside sealed motor housings.

Programmable Logic Controllers (PLC) I/O Modules

Medical Patient Monitoring Devices

Use Scenario: DIN-rail mounted digital I/O expansion modules with isolated inputs/outputs and fieldbus connectivity.

IC Role / Device Role / Timing Role: Local intelligence node handling opto-isolated input debouncing, PWM output generation, CAN/LIN communication, and diagnostic LED control.

Use Value: 48 GPIOs with 6 V tolerance simplify interface to 24 V industrial logic; SNOOZE mode enables sub-100 μs response to field input changes.

Use Scenario: Portable ECG, SpO₂, and temperature monitors requiring FDA-compliant low-power design and clinical-grade signal integrity.

IC Role / Device Role / Timing Role: Signal acquisition hub digitizing analog biosignals, performing baseline correction, storing waveform snippets, and transmitting via BLE or USB.

Use Value: On-chip 1.45 V reference and temperature sensor enable calibrated measurements without external components; BGO allows continuous data streaming during flash writes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F100GFGNA#20	Same package and pinout; 96 KB code flash, 8 KB data flash, 8 KB RAM - reduced memory footprint.	Suitable for cost-optimized designs where firmware size <96 KB and RAM usage ≤8 KB.	Select when full 128 KB flash is unnecessary and BOM cost reduction is prioritized over future firmware headroom.
R5F100GHGNA#20	Same package and pinout; 192 KB code flash, 8 KB data flash, 16 KB RAM - higher memory capacity.	Required for complex protocol stacks (e.g., Modbus TCP + web server) or multi-sensor fusion firmware.	Choose when firmware growth projection exceeds 128 KB or additional RAM is needed for real-time buffering and analytics.

Compared with R5F100GEGNA#20, R5F100GFGNA#20 offers lower memory cost but limits future firmware scalability, while R5F100GHGNA#20 provides headroom for feature-rich industrial firmware at higher silicon cost - both share identical peripheral sets, power profiles, and thermal ratings.

Availability

R5F100GEGNA#20 is available at Aetrix Electronics and suitable for smart energy metering, industrial motor control, and medical patient monitoring applications requiring stable component supply across extended product lifecycles.

Supply support for R5F100GEGNA#20 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 family is engineered for ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and integration for cost-sensitive industrial and consumer applications.

FAQ

What is the maximum operating frequency and clock source configuration for R5F100GEGNA#20?

R5F100GEGNA#20 operates up to 32 MHz using its high-accuracy on-chip oscillator (±1.0% over −20°C to +85°C), eliminating need for external crystals. It also supports external clock input (1–20 MHz) or resonator-based configurations. The core dynamically switches between high-speed (32 MHz) and ultra-low-speed (32.768 kHz) modes to optimize power versus performance - a key capability used by R5F100GEGNA#20 in battery-backed RTC applications.

Does R5F100GEGNA#20 support in-system programming and secure firmware updates?

Yes, R5F100GEGNA#20 supports full in-system programming via on-chip debug interface (FINE) and includes flash security features: block erase/write prohibition, flash shield window, and boot swap functionality. These capabilities allow safe field firmware updates and protect intellectual property - essential for R5F100GEGNA#20 deployments in networked industrial devices where remote update integrity is mandatory.

What are the analog capabilities of R5F100GEGNA#20, and how many channels can be used simultaneously?

R5F100GEGNA#20 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels, internal 1.45 V reference voltage, and on-chip temperature sensor. It supports simultaneous sampling on multiple channels using scan mode, with conversion times as low as 1.6 μs per channel. This makes R5F100GEGNA#20 well-suited for multi-sensor industrial monitoring where synchronized voltage, current, and thermal readings are required.

How does the SNOOZE mode function in R5F100GEGNA#20, and which peripherals can wake it from STOP mode?

R5F100GEGNA#20's SNOOZE mode enables low-latency wake-up from STOP mode (0.57 μA) using selected peripherals - including UART, CSI, I²C, and 16-bit timers - without full CPU restart. Upon wake-up, the CPU resumes execution within 4–6 μs. This behavior is critical for R5F100GEGNA#20 in human-interface applications like touch-key panels or IR receivers, where responsiveness must meet real-time UX requirements while preserving battery life.

Is R5F100GEGNA#20 pin-compatible with other RL78/G13 variants in the same package?

Yes, R5F100GEGNA#20 is fully pin-compatible with all RL78/G13 devices in the 48-pin HWQFN package (e.g., R5F100GFGNA#20, R5F100GHGNA#20), sharing identical pin functions, electrical characteristics, and thermal pad layout. This allows drop-in replacement during design iteration or volume procurement - a verified compatibility confirmed by Renesas' package-specific datasheet tables and footprint documentation for R5F100GEGNA#20.

R5F100GEGNA#20 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 48-WFQFN Exposed Pad

Series:: RL78/G13

Packaging:: Tray

Product Status:: Last Time Buy

Programmable:: Not Verified

Core Processor:: RL78

Core Size:: 16-Bit

Speed:: 32MHz

Connectivity:: CSI, I2C, LINbus, UART/USART

Peripherals:: DMA, LVD, POR, PWM, WDT

Number of I/O:: 34

Program Memory Size:: 64KB (64K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 4K x 8

RAM Size:: 4K x 8

Voltage - Supply (Vcc/Vdd):: 2.4V ~ 5.5V

Data Converters:: A/D 10x8/10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F100GEGNA#20 FAQ

1.How can I place an order for R5F100GEGNA#20 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F100GEGNA#20 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for R5F100GEGNA#20 reliable?

The price and inventory of R5F100GEGNA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100GEGNA#20 is usually 5 days.

3.What payment methods are accepted for R5F100GEGNA#20?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100GEGNA#20 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F100GEGNA#20?

R5F100GEGNA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F100GEGNA#20 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for R5F100GEGNA#20?

For technical support, including R5F100GEGNA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100GEGNA#20 requirements.

6.How does Aetrix verify that R5F100GEGNA#20 is sourced from the original manufacturer or authorized distributors?

All R5F100GEGNA#20 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F100GEGNA#20 meets industry standards.

7.What is the process for return or replacement of R5F100GEGNA#20?

All R5F100GEGNA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100GEGNA#20, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The R5F100GEGNA#20 part is unused and in its original packaging.

Return procedure for R5F100GEGNA#20:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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