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Renesas R5F10378ANA#U5
- Part No.:
- R5F10378ANA#U5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10378ANA#U5.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,335
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Product details
Overview
R5F10378ANA#U5 from Renesas Electronics is a 24-pin 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, UART, CSI, and operates at 1.8–5.5 V with 63 μA/MHz active current - used in battery-powered sensor nodes and smart home peripherals.
For engineers reviewing the R5F10378ANA#U5 datasheet, R5F10378ANA#U5 pinout, R5F10378ANA#U5 application, or R5F10378ANA#U5 equivalent, key selection criteria include its HWQFN-24 package, absence of data flash memory, single UART channel, no DMA controller, and ±5.0% high-speed on-chip oscillator accuracy over –40°C to +85°C.
Technical Context
The R5F10378ANA#U5 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and supports HS/LS clock modes using either external crystal (1–20 MHz) or internal oscillator (1–24 MHz). Its peripheral set excludes data flash, DMA, CRC, and safety guards found in R5F102 variants.
It delivers 31 DMIPS at 24 MHz, features 22 I/O pins (including 5 N-ch open-drain), supports background operation only for code flash self-programming (not data flash), and uses dedicated low-speed on-chip oscillator (15 kHz) for watchdog timer operation independent of main clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with 0.04167 µs min instruction time @24 MHz |
| Memory | 8 KB code flash (1 KB block size), 512 B RAM; no data flash - eliminates background rewrite capability and flash shield window function |
| Operating Voltage | 1.8 V to 5.5 V; supports direct interface with 1.8/2.5/3.3 V logic without level shifters |
| Power Consumption | 63 μA/MHz active current; HALT/STOP/SNOOZE modes enable sub-μA sleep for multi-year battery life in sensing applications |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference; suitable for resistive sensor signal acquisition without external reference |
| Oscillator Accuracy | ±5.0% over –40°C to +85°C for high-speed on-chip oscillator; requires external crystal for timing-critical UART or synchronous serial comms |
| Temperature Range | –40°C to +85°C (A-grade); qualified for consumer electronics, white goods, and industrial HMI front-ends |
Pinout & Package
Package: HWQFN-24, 4 mm × 4 mm, 0.5 mm pitch, exposed die pad (to be connected to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/KR1/SI01/RESET | Reset input / SPI slave-in / key return | Active-low reset with internal pull-up; dual-function pin enables shared PCB routing for debug and key matrix |
| P122/KR2/X2/EXCLK | Crystal oscillator input / external clock | Supports 1–20 MHz crystal or buffered clock source; required for precise UART baud rate generation |
| P121/KR3/X1 | Crystal oscillator output | Completes Pierce oscillator circuit; must use load capacitance per crystal spec to meet ±5.0% accuracy target |
| P137/INTP0 | External interrupt input | Dedicated edge-triggered interrupt pin; enables immediate wake-up from STOP mode on event detection |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | GPIO / analog input / buzzer clock / SPI clock / I²C clock | Multiplexed function pin; SCK00 enables master-mode SPI communication with up to 24 MHz clock rate |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | GPIO / analog input / SPI slave-in / UART receive / I²C data / debug RX | Shared UART/I²C/SPI receive path reduces pin count; TOOLRxD allows in-circuit debugging without dedicated debug header |
| P12/ANI18/SO00/TxD0/TOOLTxD | GPIO / analog input / SPI slave-out / UART transmit / debug TX | Enables full-duplex UART or half-duplex SPI with hardware flow control via TOOLTxD handshake |
| P40/KR0/TOOL0 | GPIO / key return / debug I/O | Configurable as general-purpose I/O or debug data line; supports Renesas E1/E20 emulator connection |
| VDD / VSS | Power supply / ground | Single-supply operation; exposed die pad must be soldered to PCB ground plane for thermal and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Reduces active current to 63 μA/MHz and deep-sleep current to sub-μA - extends coin-cell battery life beyond 5 years |
| On-chip high-speed oscillator (1–24 MHz) | Eliminates external crystal for non-timing-critical applications; ±5.0% accuracy sufficient for IR remote control or LED dimming |
| 10-bit 8-channel ADC with internal reference | Enables direct measurement of thermistors, potentiometers, and ambient light sensors without external voltage reference IC |
| Programmable clock/buzzer output (PCLBUZ0) | Generates 2.44 kHz–10 MHz square wave for piezo buzzer drive or clocking external logic without MCU firmware overhead |
| Peripheral I/O redirection register (PIOR) | Allows dynamic remapping of UART, SPI, and timer outputs to alternate pins - simplifies PCB layout and avoids signal congestion |
Applications
| Smart Appliance Control | Wireless Sensor Node |
|---|---|
Use Scenario: Microcontroller in washing machine control panel managing motor sequencing, water valve actuation, and user interface feedback. IC Role / Device Role / Timing Role: Main system controller executing real-time motor PWM, reading rotary encoder inputs, and driving segmented LCD via PCLBUZ0 clock output. Use Value: 63 μA/MHz active current and STOP mode reduce standby power to <10 μA, meeting Energy Star Level VI requirements. |
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module every 5 minutes. IC Role / Device Role / Timing Role: Sensor aggregator sampling ADC channels, formatting UART packets, and entering SNOOZE mode between transmissions. Use Value: Single UART channel and 8-channel ADC provide minimal interface footprint while supporting multi-sensor fusion without external mux. |
| Consumer Remote Control | Industrial HMI Front-End |
Use Scenario: IR remote with capacitive touch keys and LED status indicators for HVAC systems. IC Role / Device Role / Timing Role: Key scan controller using KR0–KR9 inputs, generating 38 kHz carrier via PCLBUZ0, and driving LEDs through GPIO with N-ch open-drain outputs. Use Value: On-chip 15 kHz watchdog and ±5.0% oscillator eliminate need for external timing components, reducing BOM cost by $0.12/unit. |
Use Scenario: Local operator panel for PLC-connected machinery with pushbutton inputs, LED status lights, and RS-485 interface. IC Role / Device Role / Timing Role: Isolated interface controller translating button presses to Modbus ASCII commands via UART, using INTP0–INTP3 for fast response. Use Value: 22 GPIO pins including 5 N-ch open-drain outputs tolerate 6 V transients - enabling direct connection to 24 V industrial I/O without protection diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10278ANA#U5 | Includes 2 KB data flash, DMA, CRC, RAM guard, and ±1.0% oscillator accuracy; same pinout and code flash size | Required for firmware-over-the-air updates, secure checksum validation, and high-accuracy UART timing in medical devices | Select when background data flash writes, safety certification (IEC 61508), or tighter timing tolerance are mandatory |
| R5F103AAASP#V5 | 30-pin LSSOP package, 16 KB code flash, 2 KB RAM, 8-channel ADC, single UART - no data flash or DMA | Needed for designs requiring more GPIO (26 pins), larger program memory, or higher RAM for protocol stacks | Choose for space-constrained industrial panels where 30-pin LSSOP fits existing footprint and extra memory enables future feature expansion |
Compared with R5F10278ANA#U5, the R5F10378ANA#U5 trades data flash, DMA, and oscillator precision for lower cost and reduced complexity; versus R5F103AAASP#V5, it offers smaller footprint and lower power at the expense of I/O count and memory headroom.
Availability
R5F10378ANA#U5 is available at Aetrix Electronics and suitable for smart appliance control, wireless sensor nodes, consumer remote controls, and industrial HMI front-ends requiring stable component supply across multi-year production cycles.
Supply support for R5F10378ANA#U5 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 products for automotive, industrial, infrastructure, and IoT applications.
The RL78/G12 product line targets cost-sensitive, ultra-low-power embedded control applications in consumer electronics and industrial equipment, emphasizing energy efficiency, integrated peripherals, and simplified development.
FAQ
What is the maximum operating frequency of the R5F10378ANA#U5?
The R5F10378ANA#U5 supports a maximum system clock frequency of 24 MHz using the high-speed on-chip oscillator or 20 MHz with an external crystal. At 24 MHz, it delivers 31 DMIPS performance while maintaining 63 μA/MHz active current consumption - verified in the R01DS0193EJ0250 datasheet Rev.2.50.
Does the R5F10378ANA#U5 include data flash memory?
No, the R5F10378ANA#U5 does not include data flash memory. As confirmed in Section 1.3.1 of the RL78/G12 datasheet, R5F103 products omit the 2 KB data flash present in R5F102 variants. This means background operation (BGO) for data rewriting and flash shield window functions are unavailable in the R5F10378ANA#U5.
What package type and pin count does the R5F10378ANA#U5 use?
The R5F10378ANA#U5 uses a 24-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad. This is explicitly defined in Figure 1-1 and Table 1-1 of the R01DS0193EJ0250 datasheet, where "7" denotes 24-pin and "NA" indicates HWQFN packaging.
Can the R5F10378ANA#U5 operate from a 1.8 V supply?
Yes, the R5F10378ANA#U5 supports full functionality from 1.8 V to 5.5 V supply voltage. The datasheet specifies operation down to 1.8 V in LS (low-speed main) mode at up to 8 MHz, enabling compatibility with single-cell Li-ion or alkaline battery systems without voltage regulation.
How many UART interfaces does the R5F10378ANA#U5 support?
The R5F10378ANA#U5 supports exactly one UART interface (UART0), as documented in Section 1.7 Outline of Functions and confirmed in the peripheral comparison table on page 6 of the R01DS0193EJ0250 datasheet. Additional serial communication must use CSI or I²C peripherals.
R5F10378ANA#U5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RL78/G12
- Packaging:
- Tray
- 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#U5 FAQ
1.How can I place an order for R5F10378ANA#U5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10378ANA#U5 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#U5 reliable?
The price and inventory of R5F10378ANA#U5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10378ANA#U5 is usually 5 days.
3.What payment methods are accepted for R5F10378ANA#U5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10378ANA#U5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10378ANA#U5?
R5F10378ANA#U5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10378ANA#U5 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#U5?
For technical support, including R5F10378ANA#U5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10378ANA#U5 requirements.
6.How does Aetrix verify that R5F10378ANA#U5 is sourced from the original manufacturer or authorized distributors?
All R5F10378ANA#U5 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#U5 meets industry standards.
7.What is the process for return or replacement of R5F10378ANA#U5?
All R5F10378ANA#U5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10378ANA#U5, 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#U5 part is unused and in its original packaging.
Return procedure for R5F10378ANA#U5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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