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Renesas R5F11W68DSM#50
- Part No.:
- R5F11W68DSM#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F11W68DSM#50.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
R5F11W68DSM#50 from Renesas Electronics is an 8 KB flash, 1 KB RAM RL78/G1M 20-pin TSSOP microcontroller with ultra-low power consumption (0.61 µA in STOP mode), 20 MHz high-speed on-chip oscillator (±2.0% accuracy), and integrated 8-channel 8/10-bit A/D converter - deployed in industrial sensor nodes requiring reliable operation from −40°C to +85°C.
For engineers reviewing the R5F11W68DSM#50 datasheet, R5F11W68DSM#50 pinout, R5F11W68DSM#50 application, or R5F11W68DSM#50 equivalent, this page delivers verified technical context, real-time output capability, UART/CSI serial interfaces, and confirmed industrial-grade temperature and voltage specifications (VDD = 2.25–5.5 V).
Technical Context
The R5F11W68DSM#50 implements the RL78-S1 CPU core with a 3-stage pipeline, supporting instruction execution times from 0.05 µs (20 MHz) to 1.0 µs (1 MHz), and features selectable power-on-reset (SPOR) with four detection thresholds (2.25 V to 4.45 V). It integrates a 12-bit interval timer, watchdog timer, and BCD correction circuit for embedded control tasks.
Its peripheral set includes four 16-bit timer channels (with 4 PWM outputs), one UART channel, one CSI channel, and real-time output (RTIO) functionality across eight pins - all accessible via 18 I/O lines (14 N-ch open-drain, 6 P-ch open-drain) in a 20-pin TSSOP package with 0.65 mm pitch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 8 KB code flash with on-chip debug support - sufficient for compact firmware with bootloader and sensor processing logic. |
| RAM | 1 KB on-chip RAM - supports real-time data buffering and stack depth for interrupt-driven industrial firmware. |
| Operating Voltage | 2.25 V to 5.5 V - compatible with standard 3.3 V and 5 V industrial rails; SPOR threshold ensures robust startup. |
| Temperature Range | −40°C to +85°C - certified for industrial ambient conditions without derating. |
| Supply Current (STOP) | 0.61 µA at VDD = 3.0 V - enables multi-year battery life in low-duty-cycle sensor applications. |
| A/D Converter | 8/10-bit resolution, 8 analog inputs - supports direct measurement of thermistors, potentiometers, and current-sense signals. |
| Real-Time Output | 8 RTIO channels - provides deterministic, jitter-free timing outputs for synchronized actuator control or LED strobing. |
Pinout & Package
Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65 mm pitch), industrial-grade (D-suffix), embossed tape packaging (#50).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 2.25–5.5 V supply input; decoupling required near pin for noise-sensitive analog/digital operation. |
| VSS | Ground | Dedicated digital ground reference; must be connected to system GND plane with low-impedance path. |
| P00–P05 | General-purpose I/O | CMOS I/O with N-ch open-drain (VDD-tolerant) and on-chip pull-up; suitable for switch sensing and bus interfacing. |
| P06, P07, P10–P16, P40 | Multiplexed I/O | Support UART (RxD0/TxD0), CSI (SI00/SO00/SCK00), timers (TI0x/TO0x), and A/D (ANI0–ANI7); configurable via PIOR register. |
| P125 | Reset input | Active-low RESET pin with internal pull-up; accepts external reset assertion or debounced push-button interface. |
| P137 | External interrupt | INTP0 input for wake-up from HALT/STOP modes; supports edge-triggered event capture for low-power monitoring. |
| ANI0–ANI7 | Analog inputs | Eight dedicated analog input pins shared with port pins; require external filtering and proper VDD/VSS decoupling for 10-bit accuracy. |
| RTIO0–RTIO7 | Real-time outputs | Dedicated hardware-controlled outputs with sub-microsecond jitter - used for precise timing-critical waveforms or synchronization pulses. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 0.61 µA at 3.0 V enables >10-year battery life in intermittently active sensor nodes. |
| High-accuracy on-chip oscillator | ±2.0% over −20°C to +85°C eliminates need for external crystal in cost-sensitive industrial controls. |
| Real-time output (RTIO) | 8 independent hardware outputs with deterministic timing - replaces software-timed GPIO toggling in motor/solenoid control. |
| On-chip key interrupt | 8-key return (KR0–KR7) support with built-in debounce reduces BOM count in HMI panels. |
| Selectible SPOR voltage | Four programmable reset thresholds (2.25 V/2.68 V/3.02 V/4.45 V) allow precise brown-out response for varying supply profiles. |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes via UART to gateway. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, ADC conversion, low-power scheduling, and UART transmission. Use Value: STOP mode current of 0.61 µA extends CR2032 battery life beyond 5 years; integrated SPOR prevents erratic behavior during brown-out. |
Use Scenario: Wall-mounted HVAC controller with keypad, display backlight, and relay drivers. IC Role / Device Role / Timing Role: System MCU managing key scan, RTIO-driven PWM for backlight dimming, and relay timing via TO0x outputs. Use Value: 8 RTIO channels enable independent, jitter-free dimming control for multiple LEDs; KR0–KR7 simplify mechanical button interface. |
| Programmable Logic Relay | Industrial Timer Module |
Use Scenario: DIN-rail mounted time-delay relay with user-configurable on/off intervals and status LEDs. IC Role / Device Role / Timing Role: Real-time scheduler using 12-bit interval timer and RTIO outputs to drive relay coils and indicator LEDs. Use Value: Deterministic RTIO timing ensures ±1 µs repeatability in 100 ms–10 s delay ranges; 8 KB flash accommodates configuration storage and firmware updates. |
Use Scenario: Standalone panel-mount timer for machine tool sequencing with pushbutton preset and LED feedback. IC Role / Device Role / Timing Role: Precision timing engine using high-speed oscillator and TAU timer channels for accurate interval generation. Use Value: 20 MHz oscillator with ±2.0% accuracy delivers <1% timing error over full temperature range; UART allows field calibration via PC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F11W67DSM#50 | 4 KB flash, 512 B RAM - 50% less program/data memory than R5F11W68DSM#50. | Suitable for simpler firmware with no OTA update or complex state machines. | Select when application fits within 4 KB flash and requires lower cost; verify RTIO and UART usage remains within reduced RAM headroom. |
| R5F11Y68DSM#50 | RL78/G1N variant: adds high-current P-ch open-drain outputs (−120 mA per COM pin) but removes RTIO functionality. | Targeted at segment LCD driving; lacks real-time output channels needed for precision timing. | Choose only for LCD-based HMI designs; avoid for applications requiring RTIO, such as synchronized actuator control or LED strobing. |
Compared with R5F11W67DSM#50, the R5F11W68DSM#50 provides double flash/RAM for feature-rich firmware, while R5F11Y68DSM#50 trades RTIO for LCD driver capability - making R5F11W68DSM#50 the sole choice for industrial timing-critical embedded control.
Availability
R5F11W68DSM#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, programmable logic relays, and industrial timer modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for R5F11W68DSM#50 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 global semiconductor leader delivering trusted microcontrollers, analog, and power solutions for industrial, automotive, and IoT applications.
The RL78/G1M product line is designed specifically for ultra-low-power industrial control applications - emphasizing robustness, integrated peripherals (RTIO, SPOR, BCD), and seamless migration from legacy 8-bit platforms.
FAQ
What is the maximum operating frequency of the R5F11W68DSM#50?
The R5F11W68DSM#50 supports a maximum main system clock frequency of 20 MHz using its high-speed on-chip oscillator. This yields a minimum instruction execution time of 0.05 µs under 2.7–5.5 V operation. The oscillator is factory-trimmed to ±2.0% accuracy across −20°C to +85°C, eliminating need for external crystal in many industrial applications.
Does the R5F11W68DSM#50 support real-time output functionality?
Yes, the R5F11W68DSM#50 includes eight dedicated real-time output (RTIO0–RTIO7) pins. These are hardware-controlled outputs with deterministic timing and sub-microsecond jitter, distinct from software-toggled GPIO. They are used for precise waveform generation, synchronized actuation, or LED strobing in industrial timing applications.
What is the supply current of the R5F11W68DSM#50 in STOP mode?
The R5F11W68DSM#50 draws 0.61 µA in STOP mode at VDD = 3.0 V and TA = 25°C. This ultra-low quiescent current enables multi-year battery operation in intermittently active sensor nodes. The value increases slightly at higher temperatures but remains below 2.35 µA across the full −40°C to +85°C range.
How many analog input channels does the R5F11W68DSM#50 have?
The R5F11W68DSM#50 integrates an 8/10-bit resolution A/D converter with eight analog input channels (ANI0–ANI7). These share physical pins with port functions (e.g., P07/ANI0) and operate across VDD = 2.4–5.5 V. Conversion is supported in HALT and STOP modes, enabling low-power sensor sampling.
What package type and pin count does the R5F11W68DSM#50 use?
The R5F11W68DSM#50 uses a 20-pin plastic TSSOP package (4.4 × 6.5 mm, 0.65 mm pitch), designated by the "SM" suffix. It is rated for industrial temperature (−40°C to +85°C) and supplied in embossed tape format ("#50"). Pin functions include 18 I/O lines, VDD, VSS, RESET, and TOOL0.
R5F11W68DSM#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G1M
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CSI, UART/USART
- Peripherals:
- POR, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11W68DSM#50 FAQ
1.How can I place an order for R5F11W68DSM#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11W68DSM#50 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 R5F11W68DSM#50 reliable?
The price and inventory of R5F11W68DSM#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11W68DSM#50 is usually 5 days.
3.What payment methods are accepted for R5F11W68DSM#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11W68DSM#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11W68DSM#50?
R5F11W68DSM#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11W68DSM#50 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 R5F11W68DSM#50?
For technical support, including R5F11W68DSM#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11W68DSM#50 requirements.
6.How does Aetrix verify that R5F11W68DSM#50 is sourced from the original manufacturer or authorized distributors?
All R5F11W68DSM#50 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 R5F11W68DSM#50 meets industry standards.
7.What is the process for return or replacement of R5F11W68DSM#50?
All R5F11W68DSM#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11W68DSM#50, 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 R5F11W68DSM#50 part is unused and in its original packaging.
Return procedure for R5F11W68DSM#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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