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

Renesas R5F12008GNS#30

Name: R5F12008GNS#30
Brand: Renesas
SKU: R5F12008GNS#30
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R5F12008GNS#30

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 8-WDFN Exposed Pad

Datasheet:: R5F12008GNS#30.pdf

Description:: IC MCU 16BIT 8KB FLASH 8WDFN

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Product details

Overview

R5F12008GNS#30 from Renesas Electronics is an 8 KB code flash, 1 KB RAM RL78/G15 10-pin LSSOP microcontroller with industrial-grade temperature range (−40°C to +105°C), 2.4–5.5 V operation, and integrated 8/10-bit A/D converter (4 channels), 8-channel 16-bit timer, UART, simplified SPI (2 ch), and simplified I²C (2 ch). It targets low-power sensor interface and motor control in HVAC actuators.

For engineers reviewing the R5F12008GNS#30 datasheet, R5F12008GNS#30 pinout, R5F12008GNS#30 application, or R5F12008GNS#30 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for industrial embedded design and BOM continuity planning.

Technical Context

The R5F12008GNS#30 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline and 1 MB address space - enabling deterministic real-time execution at minimum instruction time of 0.0625 μs (16 MHz high-speed on-chip oscillator) or 1.0 μs (1 MHz). Its power management includes HALT and STOP modes, selectable SPOR reset (2.25/2.68/3.02 V), and dedicated 15 kHz low-speed on-chip oscillator for watchdog operation.

It integrates dual serial interfaces: SAU0 supports two independent CSI (simplified SPI) channels and two simplified I²C channels, plus one full UART channel. Analog subsystem comprises four 8/10-bit A/D input channels (ANI0–ANI3), one comparator (IVCMP0), internal reference (IVREF0), and programmable clock/buzzer output (PCLBUZ0) up to 10 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	RL78 CPU, CISC 3-stage pipeline, 1 MB address space, 8-bit register × 8 × 4 banks
Memory	8 KB code flash (1 KB block erase), 1 KB data flash (512 B blocks, 1M rewrites), 1 KB RAM
Operating Voltage	2.4 V to 5.5 V - enables direct interface with 3.3 V and 5 V logic without level shifters
Temperature Range	−40°C to +105°C (G-grade) - qualified for industrial ambient environments including factory automation controllers
A/D Converter	8/10-bit resolution, 4 analog inputs (ANI0–ANI3), internal 0.815 V reference, VDD-referenced operation
Timers & PWM	8-channel 16-bit timer array (TAU0), 1-channel 12-bit interval timer, 3 timer outputs (2 PWM-capable)
Serial Interfaces	1 UART, 2 simplified SPI (CSI), 2 simplified I²C - no hardware I²C bus master arbitration; supports slave-only or controller mode per channel
Package	10-pin LSSOP (4.4 × 3.6 mm, 0.65 mm pitch), tray packaging (#30 suffix)

Pinout & Package

Package: 10-pin plastic LSSOP (4.4 × 3.6 mm, 0.65-mm pitch), RoHS-compliant, lead-free, moisture sensitivity level (MSL) 3.

Pin/Terminal	Circuit Role	Design Meaning
P40	Debug / Interrupt / Timer	TOOL0 debug I/O; INTP2 interrupt source; TI01/TO01 timer I/O - used for firmware update via Renesas Flash Programmer
P125	Reset / System Control	Active-low RESET̅ input; supports external reset assertion and internal SPOR detection at 2.25/2.68/3.02 V thresholds
P137	Interrupt / Timer	INTP0 interrupt input; TI00 timer input - primary wake-up source from STOP mode
VSS	Ground	Dedicated analog/digital ground pin - must be connected to PCB ground plane with low-impedance path
VDD	Power Supply	Main supply (2.4–5.5 V); powers core, peripherals, and I/O - requires local 100 nF ceramic decoupling
P00	UART / GPIO	TOOLTxD debug output; INTP6 interrupt; SO00/TxD0 UART transmit - default UART TX for host communication
P01	UART / ADC / GPIO	TOOLRxD debug input; ANI0 analog input; SI00/RxD0/SDA00 serial receive - shared UART RX and I²C data line
P02	ADC / Comparator / Clock	ANI1 analog input; IVCMP0 comparator input; VCOUT0 comparator output; PCLBUZ0 clock/buzzer output - supports analog sensing and audible feedback
P03	ADC / Comparator / UART	ANI2 analog input; IVCMP0 comparator reference; INTP4 interrupt; TO00 timer output; SCLA0 simplified I²C clock - dual-role I²C controller clock pin
P04	ADC / Timer / Interface	ANI3 analog input; INTP3 interrupt; TI01/TO01 timer I/O; SCK00/SCL00 serial clock - supports CSI or simplified I²C master clock generation

Key Features

Feature	Design Value
True low-power platform	54 µA/MHz operating current at TA = 125°C - enables battery-powered operation in intermittent-sensing applications
On-chip debug support	Integrated TOOL0/TOOLRxD/TOOLTxD pins enable in-circuit debugging without external JTAG adapter
Self-programming flash	Code/data flash reprogrammable in-system without boot swap - supports field firmware updates via UART
Flexible clock system	High-speed on-chip oscillator (1–16 MHz, ±1.0% accuracy at −20°C to +85°C) eliminates need for external crystal in cost-sensitive designs
Industrial temperature grade	G-grade qualification (−40°C to +105°C) ensures reliable operation in motor drives, PLC I/O modules, and industrial sensors
Peripheral I/O redirection	PIOR registers allow dynamic remapping of CSI/I²C/UART functions to alternate pins - increases PCB layout flexibility

Applications

Smart Thermostat Sensor Node	Brushless DC Motor Driver Feedback
Use Scenario: Compact indoor air quality and temperature monitoring unit with local display and wireless uplink. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling (temperature/humidity), buzzer alerts, UART-based BLE module interface, and low-power STOP mode scheduling. Use Value: Integrated 4-channel ADC, 1 KB data flash for calibration storage, and STOP mode current < 0.5 µA reduce BOM count and extend battery life beyond 2 years.	Use Scenario: Closed-loop commutation control board for 3-phase BLDC fans in HVAC systems. IC Role / Device Role / Timing Role: Real-time motor timing controller using TAU0 16-bit timers for precise PWM generation and INTP0-triggered hall sensor edge capture. Use Value: 8-channel timer array with 3 dedicated outputs (2 PWM-capable) enables simultaneous 3-phase gate drive timing without external timer ICs.
Industrial Solenoid Valve Controller	Programmable Logic Relay Module
Use Scenario: DIN-rail mounted valve actuator with analog pressure feedback and digital I/O isolation. IC Role / Device Role / Timing Role: Analog front-end processor converting 4–20 mA pressure signal (via ANI0–ANI3), driving N-ch open-drain valve outputs, and managing watchdog supervision. Use Value: VDD-referenced 8/10-bit ADC with internal 0.815 V reference eliminates external precision voltage reference, reducing component count by one.	Use Scenario: 8-channel discrete I/O expansion module for legacy PLC systems with RS-485 backhaul. IC Role / Device Role / Timing Role: Protocol bridge translating Modbus RTU over RS-485 (UART) into local GPIO control and status reporting via simplified I²C to local I/O ASICs. Use Value: Dual simplified I²C channels permit concurrent communication with multiple I/O expander ICs (e.g., PCA9555), simplifying multi-port design.

Smart Thermostat Sensor Node

Brushless DC Motor Driver Feedback

Use Scenario: Compact indoor air quality and temperature monitoring unit with local display and wireless uplink.

IC Role / Device Role / Timing Role: Main system controller managing ADC sampling (temperature/humidity), buzzer alerts, UART-based BLE module interface, and low-power STOP mode scheduling.

Use Value: Integrated 4-channel ADC, 1 KB data flash for calibration storage, and STOP mode current < 0.5 µA reduce BOM count and extend battery life beyond 2 years.

Use Scenario: Closed-loop commutation control board for 3-phase BLDC fans in HVAC systems.

IC Role / Device Role / Timing Role: Real-time motor timing controller using TAU0 16-bit timers for precise PWM generation and INTP0-triggered hall sensor edge capture.

Use Value: 8-channel timer array with 3 dedicated outputs (2 PWM-capable) enables simultaneous 3-phase gate drive timing without external timer ICs.

Industrial Solenoid Valve Controller

Programmable Logic Relay Module

Use Scenario: DIN-rail mounted valve actuator with analog pressure feedback and digital I/O isolation.

IC Role / Device Role / Timing Role: Analog front-end processor converting 4–20 mA pressure signal (via ANI0–ANI3), driving N-ch open-drain valve outputs, and managing watchdog supervision.

Use Value: VDD-referenced 8/10-bit ADC with internal 0.815 V reference eliminates external precision voltage reference, reducing component count by one.

Use Scenario: 8-channel discrete I/O expansion module for legacy PLC systems with RS-485 backhaul.

IC Role / Device Role / Timing Role: Protocol bridge translating Modbus RTU over RS-485 (UART) into local GPIO control and status reporting via simplified I²C to local I/O ASICs.

Use Value: Dual simplified I²C channels permit concurrent communication with multiple I/O expander ICs (e.g., PCA9555), simplifying multi-port design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F12018GSP#30	Same 10-pin LSSOP package, identical G-grade temp range, but 4 KB code flash and 4-channel ADC only - no PCLBUZ0 or VCOUT0 on P02	Lower memory footprint suits simpler sensor nodes without firmware update capability or buzzer feedback	Select when BOM cost reduction is critical and 4 KB flash suffices for application logic and bootloader
R5F12048GSP#30	16-pin SSOP package, 8 KB flash, 7-channel ADC, dual CSI/I²C, X1/X2 crystal support - adds external oscillator capability and 3 extra GPIOs	Required for designs needing crystal-based timing stability (±100 ppm) or >4 analog inputs (e.g., multi-sensor fusion)	Choose when long-term clock accuracy or expanded analog I/O is mandatory; requires PCB redesign due to larger footprint

Compared with R5F12008GNS#30, R5F12018GSP#30 reduces flash capacity and removes buzzer output for cost-sensitive volume production, while R5F12048GSP#30 trades pin count and layout complexity for crystal support and higher analog channel density - enabling precision timing or multi-sensor integration where R5F12008GNS#30's integrated oscillator and 4-channel ADC reach limits.

Availability

R5F12008GNS#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, HVAC actuator controllers, and programmable relay modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R5F12008GNS#30 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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.

The RL78/G15 group is designed for ultra-low-power, cost-sensitive industrial control applications - emphasizing integrated analog peripherals, flexible clocking, and robust debug infrastructure in compact packages.

FAQ

What is the maximum operating frequency and instruction execution time of the R5F12008GNS#30?

The R5F12008GNS#30 supports a maximum high-speed on-chip oscillator frequency of 16 MHz, yielding a minimum instruction execution time of 0.0625 μs. This timing assumes operation with the high-speed on-chip oscillator enabled and no wait states. The device also supports lower frequencies (1–8 MHz) for reduced power consumption, extending minimum instruction time up to 1.0 μs at 1 MHz operation.

Does the R5F12008GNS#30 support external crystal oscillation?

No - the R5F12008GNS#30 is a 10-pin variant of the RL78/G15 family and does not include X1/X2 crystal oscillator pins. It relies exclusively on its internal high-speed on-chip oscillator (1–16 MHz) and low-speed 15 kHz oscillator. External crystal support is available only on 16-pin and 20-pin RL78/G15 variants such as R5F12048GSP#30 or R5F12068GSP#30.

How many analog input channels does the R5F12008GNS#30 provide, and what are their design constraints?

The R5F12008GNS#30 provides four analog input channels: ANI0, ANI1, ANI2, and ANI3 - mapped to pins P01, P02, P03, and P04 respectively. These channels support 8/10-bit resolution with VDD as reference or internal 0.815 V reference (IVREF0). Input voltage must remain within 0 V to VDD, and sampling requires proper decoupling and settling time; no dedicated VREF pin is provided - IVREF0 is internal only.

Can the R5F12008GNS#30 perform in-system programming of its flash memory?

Yes - the R5F12008GNS#30 supports self-programming of both code flash and data flash memory without requiring a boot swap mechanism. Programming is performed via the on-chip debug interface or through user firmware using the Flash Control Unit (FCU), with erase operations required before write. Data flash endurance is rated at 1,000,000 rewrites (typical), and rewriting occurs at full VDD (2.4–5.5 V) without background operation support.

What debug interface options are available for the R5F12008GNS#30 during development?

The R5F12008GNS#30 uses Renesas' single-wire debug (SWD)-compatible on-chip debug interface accessed via three dedicated pins: TOOL0 (debug clock), TOOLRxD (debug receive), and TOOLTxD (debug transmit). This allows full breakpoint, step-through, and memory inspection capabilities using Renesas E2 studio and Flash Programmer tools - no external JTAG emulator is needed, reducing development tool cost and board space.

R5F12008GNS#30 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 8-WDFN Exposed Pad

Series:: RL78/G15

Packaging:: Tray

Product Status:: Last Time Buy

Programmable:: -

Core Processor:: RL78

Core Size:: 16-Bit

Speed:: 16MHz

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

Peripherals:: POR, PWM, WDT

Number of I/O:: 5

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

Program Memory Type:: FLASH

EEPROM Size:: 1K x 8

RAM Size:: 1K x 8

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

Data Converters:: A/D 3x8/10b

Oscillator Type:: External

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F12008GNS#30 FAQ

1.How can I place an order for R5F12008GNS#30 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F12008GNS#30 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 R5F12008GNS#30 reliable?

The price and inventory of R5F12008GNS#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F12008GNS#30 is usually 5 days.

3.What payment methods are accepted for R5F12008GNS#30?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F12008GNS#30 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F12008GNS#30?

R5F12008GNS#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F12008GNS#30 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 R5F12008GNS#30?

For technical support, including R5F12008GNS#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F12008GNS#30 requirements.

6.How does Aetrix verify that R5F12008GNS#30 is sourced from the original manufacturer or authorized distributors?

All R5F12008GNS#30 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 R5F12008GNS#30 meets industry standards.

7.What is the process for return or replacement of R5F12008GNS#30?

All R5F12008GNS#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F12008GNS#30, 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 R5F12008GNS#30 part is unused and in its original packaging.

Return procedure for R5F12008GNS#30:

1.Submit a request within 90 days.

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

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