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Renesas R5F10378ANA#W0
- Part No.:
- R5F10378ANA#W0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10378ANA#W0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,939
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Product details
Overview
R5F10378ANA#W0 from Renesas Electronics is a 24-pin HWQFN-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It integrates 8 KB code flash, 512 B RAM, 10-bit 8-channel ADC, 4-channel 16-bit TAU timer, UART0, CSI00, and high-speed on-chip oscillator (1–24 MHz, ±5% accuracy). It targets battery-powered sensor nodes and smart home peripherals requiring deterministic real-time response at <63 μA/MHz.
For engineers reviewing the R5F10378ANA#W0 datasheet, R5F10378ANA#W0 pinout, R5F10378ANA#W0 application, or R5F10378ANA#W0 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts with documented functional trade-offs - all aligned to Renesas' R01DS0193EJ0250 Rev.2.50 specification.
Technical Context
The R5F10378ANA#W0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting 1 MB address space and minimum instruction execution time of 0.04167 μs at 24 MHz (high-speed on-chip oscillator). Its clock system includes dedicated low-speed (15 kHz) and configurable high-speed (1–24 MHz) on-chip oscillators, with no data flash memory and no DMA controller - distinguishing it from R5F102x variants.
Peripheral integration centers on single-channel UART0, single-channel simplified SPI (CSI00), no I²C interface, and 8-channel analog input routed to a 10-bit A/D converter with internal 1.45 V reference. I/O configuration supports N-ch open-drain (VDD-tolerant), TTL input, and on-chip pull-up across 22 total pins, enabling direct interfacing with 1.8/2.5/3.3 V logic without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic 0.04167 μs min instruction cycle at 24 MHz |
| Memory | 8 KB code flash (1 KB block size), 512 B RAM; no data flash - eliminates BGO overhead and simplifies firmware update flow |
| Power Efficiency | 63 μA/MHz active current; HALT/STOP/SNOOZE modes support sub-μA sleep states for multi-year battery life |
| Analog Peripherals | 10-bit 8-channel ADC with internal 1.45 V reference and temperature sensor; supports sensor signal acquisition without external references |
| Digital Interfaces | UART0 (1 channel), CSI00 (1 simplified SPI channel), no I²C - optimized for point-to-point serial control, not multi-drop bus systems |
| Timing & Control | 4-channel 16-bit TAU timer with PWM capability, 12-bit interval timer, watchdog timer - sufficient for motor timing, LED dimming, and system supervision |
| Operating Range | VDD = 1.8–5.5 V; TA = –40°C to +85°C (Consumer grade); enables operation across wide input voltage rails in unregulated power domains |
Pinout & Package
Package: HWQFN-24 (4 × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P03 | Port 0 general-purpose I/O | N-ch open-drain (VDD-tolerant) or CMOS I/O; usable as key return (KR6–KR9) or peripheral function multiplexing |
| P10–P14 | Port 1 general-purpose I/O | Supports UART0 (RxD0/TxD0), CSI00 (SCK00/SI00/SO00), and interrupt inputs (INTP2/INTP3) |
| P20–P23 | Analog input / reference | ANI0–ANI3 with AVREFP/AVREFM; 10-bit ADC input channels with internal reference path |
| P40–P42 | Port 4 general-purpose I/O | Includes TOOL0 (debug interface), ANI21/ANI22 (ADC inputs), and timer I/O (TI02/TI03/TO02/TO03) |
| P60/P61 | I²C interface (SCLA0/SDAA0) | N-ch open-drain, 6 V tolerant; usable as I²C master/slave or remapped to RxD0/TxD0 via PIOR |
| P121/P122 | Crystal oscillator inputs | X1/X2 connection points for external 1–20 MHz crystal; required for precise timing when on-chip oscillator accuracy (±5%) is insufficient |
| P125 | Reset input | Active-low RESET with internal pull-up; accepts standard 3.3 V or 5 V reset signals; supports both external and internal reset sources |
| VDD/VSS | Power supply / ground | Single 1.8–5.5 V supply rail; exposed die pad must be soldered to VSS plane for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current + STOP mode down to 0.52 μA enables >5-year coin-cell battery life in periodic-sense applications |
| On-chip oscillator accuracy | ±5% over –40°C to +85°C eliminates need for external crystal in cost-sensitive timing applications where ±1% is not required |
| Hardware debug interface | On-chip debug circuit supports full-speed tracing and breakpoint debugging without external JTAG emulator hardware |
| Flexible I/O configuration | Per-pin selection of N-ch open-drain, TTL input, or pull-up resistor allows direct interface with legacy 5 V logic or modern 1.8 V sensors |
| Integrated analog subsystem | 10-bit 8-channel ADC with internal 1.45 V reference and temperature sensor reduces BOM count by eliminating external references and sensing ICs |
Applications
| Smart Thermostat Sensor Node | USB-C Power Monitor |
|---|---|
Use Scenario: Battery-powered wall-mounted HVAC sensor collecting ambient temperature, humidity (via I²C), and occupancy (PIR) every 30 seconds. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, local decision logic, and BLE advertisement packet generation using UART0 and internal timers. Use Value: 63 μA/MHz efficiency and STOP-mode current <1 μA extend CR2032 battery life beyond 3 years; 8-channel ADC directly acquires thermistor and humidity sensor outputs. | Use Scenario: Compact inline USB-C cable adapter measuring VBUS voltage/current and reporting via UART to host MCU. IC Role / Device Role / Timing Role: Dedicated analog front-end controller sampling shunt voltage and VBUS with 10-bit precision, managing UART communication and fault detection. Use Value: Single-supply 1.8–5.5 V operation matches USB-C VBUS range; internal 1.45 V reference ensures stable ADC readings across input voltage swings. |
| Wireless Door Lock Actuator | Industrial Panel Indicator |
Use Scenario: Low-cost BLE-enabled door lock actuating solenoid based on authenticated command, with tamper detection and low-battery alert. IC Role / Device Role / Timing Role: Real-time actuation controller handling motor drive timing (PWM), button scan, battery monitoring (ADC), and secure command parsing. Use Value: 4-channel TAU timer provides independent PWM outputs for solenoid drive and LED status indication; N-ch open-drain I/O directly drives 5 V buzzer and LED without external drivers. | Use Scenario: DIN-rail mounted HMI indicator with 4-color LED status, pushbutton input, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: Local UI processor managing LED sequencing, debounced button reads, and UART-to-RS485 translation via discrete transceiver. Use Value: 22 GPIO pins support 4 LEDs + 4 buttons + UART + debug interface on 24-pin HWQFN; 1.8 V min VDD enables operation from industrial 3.3 V LDOs with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10278ANA#W0 | Same pinout, 2 KB data flash, ±1% oscillator accuracy, DMA, CRC, RAM guard - adds BGO-capable data logging but increases cost and power | Required where background data flash writes during active operation are needed (e.g., event logging) | Select R5F10278ANA#W0 only if data flash persistence and tighter oscillator tolerance justify added BOM cost and design complexity |
| R5F103AAASP#V0 | 30-pin LSSOP, 16 KB flash, 2 KB RAM, 8-channel UART/CSI/I²C - larger package, more memory/peripherals, no data flash | Suitable for designs needing expanded I/O or additional serial interfaces without changing core firmware architecture | Choose R5F103AAASP#V0 when migrating to higher pin count is acceptable and extra UART/CSI channels are required for system expansion |
Compared with R5F10278ANA#W0, the R5F10378ANA#W0 trades data flash and oscillator accuracy for lower unit cost and reduced power in simpler control tasks; versus R5F103AAASP#V0, it offers identical functionality in a smaller, lower-cost 24-pin footprint at the expense of I/O count and memory headroom.
Availability
R5F10378ANA#W0 is available at Aetrix Electronics and suitable for smart home sensor nodes, USB-C power monitors, wireless door lock actuators, and industrial panel indicators requiring stable component supply and long-term production continuity.
Supply support for R5F10378ANA#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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.
The RL78/G12 product line delivers true low-power 16-bit MCUs targeting cost-sensitive, battery-operated consumer and industrial control applications where energy efficiency, small footprint, and integrated analog peripherals are critical.
FAQ
What is the maximum operating frequency of the R5F10378ANA#W0's high-speed on-chip oscillator?
The R5F10378ANA#W0 supports a high-speed on-chip oscillator frequency range of 1 MHz to 24 MHz, with ±5% accuracy over the full operating temperature range (–40°C to +85°C). At 24 MHz, it achieves a minimum instruction execution time of 0.04167 μs. External crystal operation up to 20 MHz is also supported via X1/X2 pins for higher precision timing requirements.
Does the R5F10378ANA#W0 include data flash memory?
No, the R5F10378ANA#W0 does not include data flash memory. As confirmed in Renesas documentation (R01DS0193EJ0250 Section 1.3.1), data flash is present only in R5F102x series devices. The R5F10378ANA#W0 relies solely on its 8 KB code flash for program storage and non-volatile parameter retention via software-managed EEPROM emulation.
How many analog input channels does the R5F10378ANA#W0 support, and what is the ADC resolution?
The R5F10378ANA#W0 features an 8-channel, 10-bit successive-approximation ADC with internal 1.45 V reference voltage and integrated temperature sensor. Analog inputs are mapped to pins P20–P23 (ANI0–ANI3) and P41–P42 plus P120 (ANI21–ANI22 and ANI19), totaling eight usable channels per the RL78/G12 datasheet Section 1.7.
What serial communication interfaces are available on the R5F10378ANA#W0?
The R5F10378ANA#W0 provides one UART channel (UART0), one simplified SPI channel (CSI00), and no native I²C interface. Pins P60/P61 (SCLA0/SDAA0) are physically present but function only as I²C in R5F102x variants; on the R5F10378ANA#W0, they are configurable as RxD0/TxD0 via the Peripheral I/O Redirection Register (PIOR), preserving UART functionality.
What is the package type and pin count of the R5F10378ANA#W0?
The R5F10378ANA#W0 is housed in a 24-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad that must be connected to VSS for thermal and electrical performance. This compact, surface-mount package supports high-density PCB layouts and automated assembly, and is designated by the "NA" suffix in the part number per Renesas' ordering guide.
R5F10378ANA#W0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- 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, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10378ANA#W0 FAQ
1.How can I place an order for R5F10378ANA#W0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10378ANA#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 R5F10378ANA#W0 reliable?
The price and inventory of R5F10378ANA#W0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10378ANA#W0 is usually 5 days.
3.What payment methods are accepted for R5F10378ANA#W0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10378ANA#W0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10378ANA#W0?
R5F10378ANA#W0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10378ANA#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 R5F10378ANA#W0?
For technical support, including R5F10378ANA#W0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10378ANA#W0 requirements.
6.How does Aetrix verify that R5F10378ANA#W0 is sourced from the original manufacturer or authorized distributors?
All R5F10378ANA#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 R5F10378ANA#W0 meets industry standards.
7.What is the process for return or replacement of R5F10378ANA#W0?
All R5F10378ANA#W0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10378ANA#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 R5F10378ANA#W0 part is unused and in its original packaging.
Return procedure for R5F10378ANA#W0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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