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Renesas R5F100SKDFB#X0
- Part No.:
- R5F100SKDFB#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
R5F100SKDFB#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLSH 128LFQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R5F100SKDFB#X0 from Renesas is a 48-pin LFQFP (7 × 7 mm, 0.5-mm pitch), industrial-grade RL78/G13 16-bit MCU with 256 KB flash, 8 KB data flash, 20 KB RAM, and operation from −40°C to +85°C. It delivers 41 DMIPS at 32 MHz, consumes just 66 μA/MHz active and 0.57 μA in RTC+LVD-only mode, and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (26 channels), and real-time clock - deployed in smart metering, industrial HMI, and battery-powered sensor nodes.
For engineers reviewing the R5F100SKDFB#X0 datasheet, R5F100SKDFB#X0 pinout, R5F100SKDFB#X0 application, or R5F100SKDFB#X0 equivalent, key selection criteria include its 48-pin LFQFP-0.5mm package, integrated data flash with background operation, ultra-low-power STOP/HALT/SNOOZE modes, and support for LIN-bus via UART - critical for cost-sensitive, long-life embedded control designs.
Technical Context
The R5F100SKDFB#X0 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline and configurable instruction timing (0.03125 μs min @ 32 MHz, 30.5 μs @ 32.768 kHz). It supports dual-clock domains: high-speed on-chip oscillator (selectable 1–32 MHz, ±1.0% accuracy) and dedicated low-speed oscillator for watchdog/RTC.
Peripherals are tightly coupled to the core via an optimized bus matrix: DMA controller (4 channels, 2-cycle transfers between SFR and RAM), multiplier/divider/MAC unit (16×16→32, 32÷32→32, 16×16+32→32), and flexible serial interfaces including CSI (SPI-compatible), UART/LIN, and I²C - all configurable per channel for shared pin multiplexing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response and compact code size vs. ARM Cortex-M0+ |
| Max Clock / Performance | 32 MHz / 41 DMIPS; sufficient for motor control loops, protocol stacks (LIN), and GUI rendering in resource-constrained systems |
| Memory | 256 KB code flash (1 KB blocks), 8 KB data flash (1M rewrite cycles, BGO enabled), 20 KB RAM; supports firmware updates without halting execution |
| Power Consumption | 66 μA/MHz active; 0.57 μA in STOP mode with RTC + LVD active; eliminates need for external RTC or supervisor ICs |
| Analog Peripherals | 10-bit ADC (26 channels, internal 1.45 V reference, temp sensor); enables direct sensing of voltage, current, temperature without signal conditioning |
| Timers & Clock | 16× 16-bit timers, 1× 12-bit interval timer, calendar RTC (99-year), watchdog (low-speed oscillator); supports precise scheduling, PWM generation, and time-stamped logging |
| Serial Interfaces | Up to 8× CSI (SPI), 4× UART/LIN, 10× I²C; allows concurrent communication with displays, sensors, transceivers, and host controllers |
Pinout & Package
Package: 48-pin LFQFP (7 × 7 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core/peripheral rail decoupling; supports 1.6–5.5 V single-supply operation |
| P00–P07, P10–P17, P20–P27, P30–P37, P40–P47, P50–P53 | General-purpose I/O | 48 total I/O pins; configurable as N-ch open drain (6 V tolerant), TTL input, or pull-up; supports 1.8/2.5/3.0 V logic interfacing |
| P10/P11/P12/P13 | SPI0 (SCK0/SI0/SO0/SS0) | Hardware CSI0 interface; enables high-speed peripheral daisy-chaining or memory expansion without bit-banging overhead |
| P14/P15 | I²C0 (SCL0/SDA0) | Dedicated hardware I²C master/slave; supports standard/fast-mode (100/400 kHz); reduces firmware load vs. software bit-banged I²C |
| P30/P31 | UART0 (TxD0/RxD0) | Full-duplex UART with LIN support; enables direct connection to automotive ECUs or industrial modems without external transceiver |
| P20/P21 | ADC0 (ANI0/ANI1), AVREFP/AVREFM | Differential analog reference inputs; allow ratiometric measurements and noise-rejecting sensor readings |
| RESET, NMIX | Reset and NMI inputs | On-chip POR and LVD (14-level selectable); RESET pin doubles as programming interface (SWD) during debug |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode (0.57 μA) | Enables multi-year battery life in wireless sensor nodes while retaining RTC alarm and voltage monitoring |
| Data flash with background operation (BGO) | Allows real-time data logging (e.g., energy consumption, fault records) during active program execution |
| Self-programming with boot swap & flash shield | Supports secure over-the-air (OTA) firmware updates with rollback protection and write-protection windows |
| Hardware LIN support in UART | Eliminates need for external LIN transceivers in automotive body electronics and HVAC controls |
| On-chip temperature sensor & 1.45 V reference | Reduces BOM cost by removing external thermal monitoring and precision voltage references |
| Key interrupt function on GPIO | Wakes CPU from STOP mode on button press or switch closure without polling - cuts average system power |
Applications
| Smart Energy Metering | Industrial Human-Machine Interface |
|---|---|
|
Use Scenario: Residential electricity/water/gas meter with pulse counting, tamper detection, and RF communication. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD display, handling IR/RF PHY layer, and maintaining accurate time stamping. Use Value: Integrated RTC with calendar and alarm enables billing cycle logging; 10-bit ADC with 26 channels supports simultaneous voltage/current/temperature sampling. |
Use Scenario: Panel-mounted operator terminal with touch buttons, LED indicators, and serial connectivity to PLCs. IC Role / Device Role / Timing Role: Local UI processor handling keypad scan, LED PWM dimming, UART-to-PLC protocol translation, and watchdog supervision. Use Value: 48 GPIOs drive LEDs, read switches, and interface to RS-485 transceivers; SNOOZE mode reduces idle power while maintaining serial wake capability. |
| Battery-Powered Sensor Node | Automotive Body Control Module |
|
Use Scenario: Wireless environmental monitor (temp/humidity/pressure) powered by coin cell or energy harvesting. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition, data preprocessing, low-power radio wake/sleep, and secure storage. Use Value: 0.57 μA STOP mode extends battery life >5 years; data flash BGO enables continuous logging during BLE advertising intervals. |
Use Scenario: Door module controlling window lift, mirror fold, interior lighting, and LIN-connected sensors. IC Role / Device Role / Timing Role: LIN slave node executing local actuator control, diagnostics, and ECU communication per ISO 17987. Use Value: Hardware UART with LIN framing and sync-break detection offloads timing-critical tasks from firmware; 6 V-tolerant I/O interfaces directly to 12 V vehicle signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101SKDFB#X0 | No data flash (0 KB); same core, peripherals, and package; lower cost where non-volatile parameter storage is handled externally. | Suitable when EEPROM or external flash handles calibration data or configuration - not for field-upgradable firmware. | Select when BOM cost reduction is prioritized over integrated data retention and background reprogramming capability. |
| R5F100SJDFB#X0 | 192 KB flash, 8 KB data flash, 16 KB RAM; identical peripheral set and package; lower memory footprint for simpler firmware. | Fits applications with smaller code base (e.g., basic sensor fusion, fixed-function control) requiring same low-power profile and I/O count. | Choose when full 256 KB flash is unnecessary - reduces memory test overhead and improves yield in high-volume production. |
Compared with R5F100SKDFB#X0, R5F101SKDFB#X0 removes data flash but retains identical power/performance/I/O - ideal for cost-driven LIN slaves; R5F100SJDFB#X0 scales down flash/RAM while preserving all peripherals - better suited for streamlined firmware deployments without sacrificing design reuse.
Availability
R5F100SKDFB#X0 is available at Aetrix Electronics and suitable for smart metering, industrial HMI, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for R5F100SKDFB#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 family 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 operating temperature range for the R5F100SKDFB#X0?
The R5F100SKDFB#X0 is rated for industrial operation from −40°C to +85°C. This is confirmed by its 'D' grade suffix in the part number and specified in the RL78/G13 datasheet Rev.3.80, Section 1.1. It does not support the extended −40°C to +105°C 'G' grade variant.
Does the R5F100SKDFB#X0 include data flash memory, and what is its endurance?
Yes, the R5F100SKDFB#X0 includes 8 KB of on-chip data flash memory. Its endurance is rated at 1,000,000 write/erase cycles (typical), with background operation (BGO) enabled - allowing program execution during data flash rewriting, as documented in Section 1.1 of the R01DS0131EJ0380 datasheet.
What package type and pin pitch does the R5F100SKDFB#X0 use?
The R5F100SKDFB#X0 uses a 48-pin LFQFP package with 7 mm × 7 mm body size and 0.50-mm pin pitch. This is explicitly defined in Figure 1-1 and Table 1-1 of the RL78/G13 datasheet, where the 'FB' suffix denotes LFQFP-0.50mm and '#X0' indicates embossed tape packaging.
Can the R5F100SKDFB#X0 operate from a single 1.8 V supply?
Yes, the R5F100SKDFB#X0 supports single-supply operation from 1.6 V to 5.5 V. At 1.8 V, it can run at reduced maximum frequency (≤ 8 MHz per datasheet electrical characteristics), enabling compatibility with low-voltage battery systems and mixed-voltage board designs.
How many analog input channels does the ADC in the R5F100SKDFB#X0 support?
The R5F100SKDFB#X0 integrates a 10-bit successive-approximation ADC supporting up to 26 analog input channels (ANI0 through ANI25), as listed in Section 1.1 "A/D converter" of the datasheet. Input channels are mapped to specific pins (e.g., P20 = ANI0, P21 = ANI1) and share the internal 1.45 V reference.
R5F100SKDFB#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:
R5F100SKDFB#X0 FAQ
1.How can I place an order for R5F100SKDFB#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100SKDFB#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 R5F100SKDFB#X0 reliable?
The price and inventory of R5F100SKDFB#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100SKDFB#X0 is usually 5 days.
3.What payment methods are accepted for R5F100SKDFB#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100SKDFB#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F100SKDFB#X0?
R5F100SKDFB#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100SKDFB#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 R5F100SKDFB#X0?
For technical support, including R5F100SKDFB#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100SKDFB#X0 requirements.
6.How does Aetrix verify that R5F100SKDFB#X0 is sourced from the original manufacturer or authorized distributors?
All R5F100SKDFB#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 R5F100SKDFB#X0 meets industry standards.
7.What is the process for return or replacement of R5F100SKDFB#X0?
All R5F100SKDFB#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100SKDFB#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 R5F100SKDFB#X0 part is unused and in its original packaging.
Return procedure for R5F100SKDFB#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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