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Renesas R5F11778GNA#W0
- Part No.:
- R5F11778GNA#W0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F11778GNA#W0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,679
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Product details
Overview
R5F11778GNA#W0 from Renesas Electronics is an RL78/I1D 8-bit microcontroller designed for ultra-low-power industrial applications. It features 8 KB code flash, 2 KB data flash, 0.7 KB RAM, 24-pin HWQFN (4 × 4 mm, 0.5 mm pitch) package, and operates from 1.6 V to 3.6 V across -40°C to +105°C ambient temperature.
For engineers reviewing the R5F11778GNA#W0 datasheet, R5F11778GNA#W0 pinout, R5F11778GNA#W0 application, or R5F11778GNA#W0 equivalent, this device delivers verified low-power operation (58.3 μA/MHz active, 0.64 μA RTC+LVD standby), dual CSI/I²C interfaces, four operational amplifiers, two comparators, and integrated A/D conversion - all critical for battery-powered sensor nodes and industrial control modules.
Technical Context
The R5F11778GNA#W0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (0.04167 μs at 24 MHz high-speed on-chip oscillator). It integrates a 12-bit interval timer, four 16-bit timers, real-time clock with calendar function, and watchdog timer - enabling precise timing and event-driven control in resource-constrained systems.
Its peripheral set includes two simplified SPI (CSI) channels, one UART, two simplified I²C channels, DTC with 20 activation sources, ELC supporting 17 event inputs and 5 trigger outputs, and a 12-bit A/D converter with up to 6 input channels - all mapped to 18 total I/O pins in the 24-pin HWQFN package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 8-bit CISC CPU with 3-stage pipeline and multiply/divide/accumulate instructions |
| Flash Memory | 8 KB code flash (1 KB block size) with self-programming and flash shield window security |
| Data Flash | 2 KB background operation (BGO) data flash rated for 1,000,000 rewrites at 1.8–3.6 V |
| RAM | 0.7 KB on-chip RAM, including dedicated areas for flash library use starting at FF300H |
| Operating Voltage | 1.6 V to 3.6 V supply range, supporting direct interface with 1.8 V/2.5 V external devices |
| Temperature Range | -40°C to +105°C industrial grade operation with derating guidance above +85°C |
| Power Modes | HALT, STOP, and SNOOZE modes; 0.64 μA RTC+LVD-only operation enables multi-year battery life |
Pinout & Package
24-pin HWQFN package (4 × 4 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS. Pin count and I/O count match RL78/I1D 24-pin variant specifications: 18 total I/O pins (including analog, serial, timer, and interrupt functions), plus power, ground, reset, and oscillator connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Power supply / Ground | Dual-domain supply: VDD powers digital logic; VSS serves as reference for both digital and analog sections |
| AVDD / AVSS | Analog power / Analog ground | Must be tied to VDD/VSS respectively; ensures clean analog reference for ADC, op-amps, and comparators |
| REGC | Regulator capacitor terminal | Requires 0.47–1 μF capacitor to VSS; stabilizes internal voltage regulator for low-noise analog operation |
| P121 / P122 | Main system crystal oscillator inputs | Supports 1–20 MHz ceramic/crystal resonators; startup controlled via oscillation stabilization time counter (OSTC) |
| P54 / P55 | UART0 TX/RX | Full-duplex asynchronous communication channel with INTP1/INTP2 interrupt capability and TOOL interface support |
| P51–P53 | CSI01 / I²C01 interface | Second serial interface supporting either simplified SPI (CSI) or simplified I²C protocol via software configuration |
| P12 / P13 / P14 | Analog input / Op-amp inputs | ANI2/ANI3/ANI4 channels with dedicated AMP0+/AMP0−/AMP0O and IVCMP0 functionality for sensor signal conditioning |
| RESET | Active-low reset input | Accepts external reset signal; also triggered internally by POR, LVD, WDT, illegal instruction, or RAM parity error |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 58.3 μA/MHz active current and 0.64 μA RTC+LVD standby enable decade-scale battery operation in sensor endpoints |
| Dual serial interface capability | Two independent CSI/I²C channels (CSI00/CSI01) allow concurrent communication with multiple peripherals without bus contention |
| Integrated analog front-end | Four operational amplifiers, two comparators, and 6-channel 8/12-bit ADC eliminate need for external signal-conditioning ICs |
| Flexible clock system | High-speed (24 MHz ±1.0%), middle-speed (4 MHz), and low-speed (15 kHz) on-chip oscillators reduce BOM cost and board space |
| Robust industrial qualification | Rated for -40°C to +105°C operation with 12-level LVD, POR, and flash write endurance management for mission-critical deployments |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor with wireless telemetry and local display. IC Role / Device Role / Timing Role: Main controller managing ADC sampling, op-amp signal conditioning, RTC-based wake-up scheduling, and UART-to-LoRa bridge. Use Value: 0.64 μA RTC+LVD mode extends battery life beyond 10 years; dual CSI/I²C supports simultaneous sensor and radio interface without external bus switch. |
Use Scenario: Tamper-resistant utility meter with pulse counting, voltage monitoring, and secure firmware updates. IC Role / Device Role / Timing Role: System-on-chip handling metrology ADC, EEPROM-safe data logging, cryptographic key storage, and secure bootloader execution. Use Value: 2 KB data flash with 1M rewrite cycles enables reliable lifetime energy logging; flash shield window prevents unauthorized firmware access during field updates. |
| Programmable Logic Controller (PLC) I/O Module | Factory Automation Edge Controller |
|
Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O manager coordinating GPIO state changes, timer-based PWM generation, and UART Modbus slave protocol stack. Use Value: Event Link Controller (ELC) enables hardware-triggered GPIO toggling with sub-microsecond latency; 18 I/O pins support 16-channel discrete I/O plus diagnostics. |
Use Scenario: Compact edge node aggregating vibration, current, and temperature data from CNC machines before forwarding to cloud gateway. IC Role / Device Role / Timing Role: Multi-sensor fusion hub performing analog front-end amplification, 12-bit ADC acquisition, CRC-protected data packaging, and UART/RS-485 transmission. Use Value: Four integrated op-amps condition piezoelectric and thermocouple signals directly; 12-bit ADC resolution meets ISO 10816-3 vibration monitoring accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1177AGNA#W0 | 16 KB code flash, 2 KB data flash, 2.0 KB RAM - identical package, pinout, and peripheral set | Supports larger firmware images and more complex control algorithms without layout change | Select when firmware size exceeds 8 KB or additional RAM is required for real-time buffering |
| R5F117A8GSP#30 | 30-pin LSSOP package, 8 KB flash, 2 KB data flash, 0.7 KB RAM - same core and feature set but different pin count and package | Offers 24 I/O pins and expanded analog channel count (12-channel ADC) in through-hole-compatible package | Choose for designs requiring higher I/O density or legacy LSSOP assembly compatibility over QFN miniaturization |
Compared with R5F11778GNA#W0, the R5F1177AGNA#W0 provides double flash capacity within identical footprint and power profile, while the R5F117A8GSP#30 trades compactness for greater I/O flexibility and analog channel count - enabling scalable design migration paths without architectural redesign.
Availability
R5F11778GNA#W0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, PLC I/O modules, factory automation edge controllers, and battery-powered telemetry systems requiring stable component supply across extended product lifecycles.
Supply support for R5F11778GNA#W0 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 embedded solutions for automotive, industrial, infrastructure, and IoT applications, with over 40 years of microcontroller innovation.
The RL78/I1D product line targets ultra-low-power industrial control applications, integrating analog peripherals, robust timing, and secure firmware execution in compact packages optimized for harsh environments and long-life deployments.
FAQ
What is the maximum operating frequency and accuracy of the high-speed on-chip oscillator in R5F11778GNA#W0?
The R5F11778GNA#W0 high-speed on-chip oscillator supports up to 24 MHz operation with ±1.0% accuracy across -20°C to +85°C and 1.8–3.6 V supply. At 1.6–1.8 V, accuracy degrades to ±5.0%, and at +85–+105°C, it is ±2.0% under 2.4–3.6 V conditions. This oscillator serves as the default boot clock before switching to external crystal if configured.
How many analog input channels and operational amplifiers does R5F11778GNA#W0 support?
The R5F11778GNA#W0 supports six analog input channels (ANI2–ANI4, ANI11–ANI13) and integrates four operational amplifiers (AMP0–AMP3), each with dedicated +/− inputs and output terminals. These op-amps can be configured in non-inverting, inverting, or differential gain stages and are fully routable to ADC inputs for precision sensor signal conditioning.
Does R5F11778GNA#W0 support background data flash rewriting while executing program code?
Yes, R5F11778GNA#W0 supports background operation (BGO) for data flash memory: instructions can be executed from code flash while simultaneously rewriting the 2 KB data flash. This enables seamless firmware parameter updates or logging without halting real-time control tasks - critical for uninterrupted industrial operation.
What are the key power-saving modes available in R5F11778GNA#W0 and their typical current consumption?
R5F11778GNA#W0 offers HALT (core stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals active during low-power wait). Typical currents are 58.3 μA/MHz active, 0.64 μA in STOP with RTC+LVD enabled, and sub-μA levels in deep SNOOZE - validated across -40°C to +105°C for industrial battery longevity.
Can R5F11778GNA#W0 operate with external 32.768 kHz crystal for real-time clock functionality?
Yes, R5F11778GNA#W0 supports external 32.768 kHz crystal connection via XT1/XT2 pins for high-accuracy RTC operation. The subsystem clock generator uses this crystal to drive the real-time clock with calendar, alarm, and clock correction functions - achieving ±20 ppm stability over temperature, essential for time-stamped industrial logging.
R5F11778GNA#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/I1D
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CSI, I2C, UART/USART
- Peripherals:
- LVD, POR, WDT
- Number of I/O:
- 15
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 3.6V
- Data Converters:
- A/D 6x8/12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F11778GNA#W0 FAQ
1.How can I place an order for R5F11778GNA#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F11778GNA#W0 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 R5F11778GNA#W0 reliable?
The price and inventory of R5F11778GNA#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F11778GNA#W0 is usually 5 days.
3.What payment methods are accepted for R5F11778GNA#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F11778GNA#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F11778GNA#W0?
R5F11778GNA#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F11778GNA#W0 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 R5F11778GNA#W0?
For technical support, including R5F11778GNA#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F11778GNA#W0 requirements.
6.How does Aetrix verify that R5F11778GNA#W0 is sourced from the original manufacturer or authorized distributors?
All R5F11778GNA#W0 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 R5F11778GNA#W0 meets industry standards.
7.What is the process for return or replacement of R5F11778GNA#W0?
All R5F11778GNA#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F11778GNA#W0, 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 R5F11778GNA#W0 part is unused and in its original packaging.
Return procedure for R5F11778GNA#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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