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Renesas R5F100SKAFB#X0
- Part No.:
- R5F100SKAFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
R5F100SKAFB#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLSH 128LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,984
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Product details
Overview
R5F100SKAFB#X0 from Renesas is a 128-pin LFQFP (14 × 20 mm, 0.5-mm pitch), industrial-grade RL78/G13 16-bit MCU with 256 KB flash, 8 KB data flash, 20 KB RAM, 32 MHz max CPU speed, and ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), deployed in smart metering, HVAC controllers, and industrial sensor nodes.
For engineers reviewing the R5F100SKAFB#X0 datasheet, R5F100SKAFB#X0 pinout, R5F100SKAFB#X0 application, or R5F100SKAFB#X0 equivalent, key selection criteria include its integrated real-time clock with calendar/alarm, 10-bit 26-channel ADC with internal temperature sensor, dual UART/LIN support, and hardware DMA for deterministic peripheral-to-memory transfers in battery-constrained embedded systems.
Technical Context
The R5F100SKAFB#X0 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), and features an on-chip high-accuracy ±1.0% oscillator across 1.8–5.5 V and –40 to +105°C.
It integrates a 12-bit interval timer, 16-bit timer array (16 channels), watchdog timer with dedicated low-speed oscillator, and background operation (BGO) for data flash rewriting while executing code - enabling seamless firmware updates without halting real-time control tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Clock Speed | 32 MHz - delivers 41 DMIPS performance for real-time control loops |
| Flash Memory | 256 KB code flash - supports block erase (1 KB), self-programming, and boot swap |
| Data Flash | 8 KB - rated for 1,000,000 rewrites, enables nonvolatile parameter storage with BGO |
| RAM | 20 KB on-chip SRAM - includes dedicated flash library RAM regions (FAF00H start) |
| ADC | 10-bit resolution, 26 input channels, internal 1.45 V reference and temperature sensor |
| Operating Temp | –40°C to +105°C (industrial G-grade) - qualified for harsh ambient environments |
| Supply Voltage | 1.6 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V peripherals without level shifters |
Pinout & Package
Package: 128-pin LFQFP (14 × 20 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | SPI clock / I²C clock | Shared pin supports master/slave SPI or I²C communication with programmable function select |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI input / UART receive / debug RX / I²C data | Multi-function pin enabling serial debug, sensor interface, or LIN bus communication |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Configurable as primary analog channel or precision ADC reference voltage source |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Supports differential ADC measurements or external reference biasing |
| P22/ANI2 | Analog input 2 | Dedicated ADC channel with selectable gain and sampling trigger sources |
| P147/ANI18 | Analog input 18 | High-numbered channel accessible via extended port mapping for flexible sensor routing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | HALT (0.57 μA), STOP, and SNOOZE modes enable multi-year battery life in remote sensors |
| Real-time clock (RTC) | Calendar function (99-year range), alarm interrupt, and auto clock correction reduce host MCU overhead |
| Hardware DMA controller | 4-channel DMA with 2-clock transfer latency between SFR and RAM - offloads CPU during ADC/UART bursts |
| On-chip debug & security | Firmware protection via flash shield window and block erase prohibition prevents unauthorized access |
| LIN bus support | UART peripheral with LIN break detection and sync field generation - eliminates need for external transceiver in automotive body modules |
| Temperature sensor | Integrated calibrated sensor (±2°C accuracy) enables thermal compensation without external components |
Applications
| Smart Energy Metering | HVAC Control Unit |
|---|---|
|
Use Scenario: Residential and commercial electricity meters requiring long-term accuracy, tamper resistance, and zero-maintenance operation over 10+ years. IC Role / Device Role / Timing Role: Primary system controller managing metrology ADC sampling, pulse output generation, RTC-based billing intervals, and secure firmware updates. Use Value: 256 KB flash stores dual firmware images (boot swap), 8 KB data flash retains calibration coefficients and usage logs, and 0.57 μA STOP mode extends battery backup life. |
Use Scenario: Wall-mounted thermostats and zone controllers interfacing with temperature/humidity sensors, relays, and wireless modules. IC Role / Device Role / Timing Role: Central timing and interface hub synchronizing 10-bit ADC readings, driving buzzer outputs, managing UART-based HVAC protocol stacks, and maintaining real-time scheduling. Use Value: Integrated RTC with calendar/alarm replaces external timekeeping ICs; 26-channel ADC supports multi-sensor fusion without external MUX; LIN support enables direct connection to HVAC actuators. |
| Industrial Sensor Node | Factory Automation I/O Module |
|
Use Scenario: Wireless or wired condition-monitoring nodes deployed in manufacturing plants measuring vibration, current, or environmental parameters. IC Role / Device Role / Timing Role: Low-power acquisition engine performing triggered ADC conversions, preprocessing sensor data, and initiating UART or SPI transmission upon threshold events. Use Value: 66 μA/MHz active current and SNOOZE mode allow continuous sensing with minimal energy penalty; hardware DMA moves ADC results to RAM without CPU intervention. |
Use Scenario: DIN-rail mounted digital I/O modules converting PLC-level signals into isolated inputs/outputs with diagnostics and status reporting. IC Role / Device Role / Timing Role: Real-time logic executor handling N-ch open-drain outputs (6 V tolerant), key interrupt scanning, and cyclic redundancy-checked UART communication with master controllers. Use Value: 128-pin package provides 100+ GPIOs with configurable pull-up/pull-down and TTL input buffers; 1.6–5.5 V operation interfaces directly with 3.3 V logic and 24 V field-side circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101SKAFB#X0 | No data flash memory (0 KB); identical core, peripherals, and package | Not suitable for applications requiring nonvolatile parameter storage or firmware update logging | Select when data retention is handled externally or unnecessary; reduces cost and simplifies flash management |
| RA2A1GBM20FB#AC0 | Arm Cortex-M23 core, 256 KB flash, 32 KB SRAM, 12-bit 24-channel ADC, 1.6–5.5 V, –40 to +105°C | Higher performance (64 MHz), TrustZone security, and enhanced analog integration but requires different toolchain and firmware architecture | Choose for new designs needing scalable software ecosystem, functional safety support, or future-proofing beyond RL78 roadmap |
Compared with R5F100SKAFB#X0, R5F101SKAFB#X0 removes data flash to lower cost and simplify programming, while RA2A1GBM20FB#AC0 offers modern Arm architecture with expanded memory and security at the expense of legacy RL78 code compatibility and toolchain continuity.
Availability
R5F100SKAFB#X0 is available at Aetrix Electronics and suitable for smart metering, HVAC control, and industrial sensor node designs requiring stable component supply, long-term industrial temperature qualification, and verified flash reliability.
Supply support for R5F100SKAFB#X0 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 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F100SKAFB#X0?
The R5F100SKAFB#X0 operates at up to 32 MHz and delivers 41 DMIPS performance. This benchmark reflects its RL78 CPU core's 3-stage pipeline efficiency and is measured under standard conditions per Renesas documentation. The R5F100SKAFB#X0 achieves this throughput while maintaining ultra-low active current (66 μA/MHz), making it suitable for compute-intensive yet power-sensitive applications like sensor fusion and real-time control.
Does the R5F100SKAFB#X0 support LIN bus communication, and how is it implemented?
Yes, the R5F100SKAFB#X0 supports LIN bus communication through its UART peripherals, which include dedicated LIN-mode features such as automatic break detection, sync field generation, and checksum calculation. These capabilities are implemented in hardware, eliminating the need for bit-banging or external LIN transceivers in basic implementations. The R5F100SKAFB#X0 uses UART0 or UART1 configured in LIN mode, and its 128-pin package provides sufficient GPIOs for connecting a standard LIN physical layer transceiver.
What are the flash memory configuration options and security features available on the R5F100SKAFB#X0?
The R5F100SKAFB#X0 includes 256 KB of code flash memory organized in 1 KB blocks, supporting self-programming with boot swap and flash shield window functions. Security features include prohibition of block erase and rewriting for protected regions, preventing unauthorized firmware modification. The R5F100SKAFB#X0 also supports on-chip debug lock to restrict access during development and production programming. These mechanisms collectively safeguard intellectual property and ensure firmware integrity in field-deployed devices.
How does the R5F100SKAFB#X0 handle analog-to-digital conversion, and what is the role of the internal temperature sensor?
The R5F100SKAFB#X0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and a factory-calibrated temperature sensor. The sensor provides direct die temperature readings with ±2°C accuracy across the full operating range and is accessible via dedicated ADC channel ANI18. This allows the R5F100SKAFB#X0 to perform thermal compensation of analog measurements or monitor system health without external components - reducing BOM cost and board space.
What industrial temperature grade and packaging does the R5F100SKAFB#X0 use, and how is it marked?
The R5F100SKAFB#X0 is rated for industrial operation from –40°C to +105°C (G-grade), confirmed by Renesas' qualification testing and documented in the RL78/G13 datasheet. It uses a 128-pin LFQFP package (14 × 20 mm, 0.5-mm pitch), identified by the "FB" suffix in the part number and "#X0" indicating embossed tape packaging. The "G" in the ordering code denotes the extended temperature range, distinguishing it from A-grade (–40 to +85°C) variants.
R5F100SKAFB#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 128-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 110
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 26x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F100SKAFB#X0 FAQ
1.How can I place an order for R5F100SKAFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100SKAFB#X0 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 R5F100SKAFB#X0 reliable?
The price and inventory of R5F100SKAFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100SKAFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F100SKAFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100SKAFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F100SKAFB#X0?
R5F100SKAFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100SKAFB#X0 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 R5F100SKAFB#X0?
For technical support, including R5F100SKAFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100SKAFB#X0 requirements.
6.How does Aetrix verify that R5F100SKAFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F100SKAFB#X0 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 R5F100SKAFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F100SKAFB#X0?
All R5F100SKAFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100SKAFB#X0, 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 R5F100SKAFB#X0 part is unused and in its original packaging.
Return procedure for R5F100SKAFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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