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Renesas R5F10377ANA#U0
- Part No.:
- R5F10377ANA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R5F10377ANA#U0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
R5F10377ANA#U0 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 4 KB code flash, 256 B RAM, 10-bit 8-channel ADC, 1-channel UART, and 4-channel 16-bit TAU timer - enabling compact sensor interface and battery-powered appliance control.
For engineers reviewing the R5F10377ANA#U0 datasheet, R5F10377ANA#U0 pinout, R5F10377ANA#U0 application, or R5F10377ANA#U0 equivalent, key selection criteria include its 1.8–5.5 V operation, STOP/HALT/SNOOZE low-power modes, on-chip high-speed oscillator (±5% accuracy), and absence of data flash memory - distinguishing it from R5F1027x variants.
Technical Context
The R5F10377ANA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz. Its clock system combines a ±5% accurate high-speed on-chip oscillator (1–24 MHz selectable) and a 15 kHz low-speed on-chip oscillator, supporting dynamic mode switching between HS and LS modes for power optimization.
Peripheral integration includes one UART channel, one simplified SPI (CSI) channel, no simplified I²C, and four 16-bit timer channels with PWM capability. Unlike R5F1027x, it omits DMA, CRC, RAM guard, SFR guard, and data flash - confirming its role as a cost-optimized, entry-level variant within the RL78/G12 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline; enables deterministic real-time control with 0.04167 µs min instruction time @24 MHz. |
| Memory | 4 KB code flash (1 KB block size), 256 B RAM; supports self-programming but no data flash - limits field firmware updates without external storage. |
| Operating Voltage | 1.8 V to 5.5 V single supply; allows direct interfacing with 1.8/2.5/3.3/5 V logic and battery-powered operation down to two alkaline cells. |
| Low-Power Modes | HALT (63 μA/MHz), STOP (0.52 μA typ), SNOOZE; enables sub-μA sleep with wake-on-interrupt for energy-constrained IoT endpoints. |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference; sufficient for temperature, voltage, and resistive sensor digitization in home appliances. |
| Timers | 4-channel 16-bit TAU with PWM output capability; provides motor control timing, LED dimming, and pulse generation without external ICs. |
| Serial Interfaces | 1 UART channel, 1 CSI (SPI-like) channel, no I²C; supports basic host communication and simple peripheral bridging only. |
Pinout & Package
Package: HWQFN-24 (4 mm × 4 mm, 0.5 mm pitch), exposed die pad (to be connected to VSS), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P125/KR1/SI01/RESET | Reset input / Serial data input | Active-low reset with internal pull-up; dual-function pin enables hardware reset or SPI slave input - requires external pull-up if used as SI01. |
| P121/KR3/X1 | Ceramic resonator/crystal input | Primary external clock source for main system clock; supports 1–20 MHz crystals/resonators for precise timing-critical applications. |
| P122/KR2/X2/EXCLK | Ceramic resonator/crystal output / External clock input | Completes crystal oscillator circuit or accepts external clock signal up to 20 MHz - enables synchronous system timing. |
| P137/INTP0 | External interrupt input | Dedicated edge-triggered interrupt pin; supports fast wake-from-STOP response for button press or sensor event detection. |
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Primary analog input channel and selectable ADC reference voltage source - simplifies single-supply sensor interface design. |
| P21/ANI1/AVREFM | Analog input / ADC reference negative | Second analog input and optional ADC reference ground - enables differential measurement or ratiometric sensor scaling. |
| P40/KR0/TOOL0 | Key return / Debug tool interface | Supports capacitive touch sensing or on-chip debug communication; shared function reduces pin count in space-constrained layouts. |
| VDD / VSS | Power supply / Ground | Single 1.8–5.5 V supply rail; exposed thermal pad must be soldered to PCB ground plane for thermal stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >1-year battery life in coin-cell-powered remote controls using STOP mode between events. |
| On-chip high-speed oscillator | ±5% accuracy over –40°C to +85°C eliminates need for external crystal in cost-sensitive applications like smart switches. |
| Hardware multiplier/divider | 16×16→32-bit signed/unsigned multiply and 16×16+32→32-bit MAC accelerate PID loop calculations in motor control firmware. |
| Programmable clock/buzzer output | PCLBUZ0 pin generates 2.44 kHz–10 MHz square waves - drives piezo buzzers or clocks external logic without timers or GPIO toggling. |
| On-chip voltage detector (LVD) | 12 programmable threshold levels (1.88–4.06 V) enable graceful shutdown or brown-out recovery in battery-powered systems. |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in cordless vacuum cleaner mainboard managing motor speed, battery gauge, and button inputs. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor commutation and user interface polling via 4-channel TAU and 8-channel ADC. Use Value: 4 KB flash accommodates closed-loop control firmware; 1.8–5.5 V operation matches Li-ion battery discharge curve without regulator. |
Use Scenario: Standalone temperature/humidity node transmitting data via UART to gateway in factory HVAC monitoring. IC Role / Device Role / Timing Role: Data acquisition engine sampling sensors every 10 s, entering STOP mode between readings to extend 2xAA battery life to 3+ years. Use Value: On-chip 10-bit ADC and LVD eliminate external signal conditioning; ±5% oscillator suffices for non-time-critical UART comms. |
| Smart Lighting Dimmer | Consumer Remote Control |
|
Use Scenario: Triac-based AC dimmer module regulating LED brightness based on rotary encoder input and ambient light sensor. IC Role / Device Role / Timing Role: Timing-critical zero-crossing detector and PWM generator using TAU channels synchronized to mains frequency. Use Value: HALT mode reduces active current during idle periods; PCLBUZ0 pin drives status buzzer without extra driver transistor. |
Use Scenario: IR remote control for TV with capacitive touch keys, battery voltage monitoring, and IR carrier generation. IC Role / Device Role / Timing Role: Low-power system manager sampling KR pins, measuring VDD via ADC, and generating 38 kHz IR carrier via PCLBUZ0. Use Value: 256 B RAM holds key state and debounce counters; STOP mode draws <1 µA - extends CR2032 battery life beyond 24 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10277ANA#U0 | Includes 2 KB data flash, DMA, CRC, RAM/SFR guard; ±1% oscillator accuracy; same pinout and package. | Required for field firmware updates, safety-critical checksums, or high-accuracy timing (e.g., metering). | Select when data logging, secure boot, or tighter timing tolerance is mandatory - adds cost and complexity. |
| R5F10378ANA#U0 | Same R5F1037x series but with 8 KB code flash and 512 B RAM; identical peripherals and low-power features. | Suitable for larger firmware images (e.g., BLE stack integration or multi-sensor fusion algorithms). | Choose when firmware growth exceeds 4 KB or additional RAM is needed for buffering - no hardware redesign required. |
Compared with R5F10277ANA#U0, the R5F10377ANA#U0 trades data flash and enhanced accuracy for lower BOM cost and simpler certification; versus R5F10378ANA#U0, it offers a pin-compatible path to firmware scalability while maintaining identical power and interface behavior.
Availability
R5F10377ANA#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart lighting dimmers, and consumer remote controls requiring stable component supply across long production lifecycles.
Supply support for R5F10377ANA#U0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - emphasizing energy efficiency, small footprint, and rapid development with integrated peripherals and toolchain support.
FAQ
What is the maximum operating frequency of the R5F10377ANA#U0?
The R5F10377ANA#U0 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When driven by an external crystal (X1/X2), the maximum main system clock is 20 MHz under 2.7–5.5 V operation, or 8 MHz under 1.8–2.7 V. Instruction execution time ranges from 0.04167 µs (24 MHz) to 1 µs (1 MHz), configurable per application power/performance needs.
Does the R5F10377ANA#U0 include data flash memory?
No, the R5F10377ANA#U0 does not include data flash memory. As confirmed in the RL78/G12 datasheet Section 1.3.1, R5F103 products (including R5F10377ANA#U0) omit the 2 KB data flash present in R5F102 variants. Firmware updates must use code flash reprogramming or external EEPROM/Flash, and runtime parameter storage requires RAM or external non-volatile memory.
What are the low-power modes supported by the R5F10377ANA#U0?
The R5F10377ANA#U0 supports HALT, STOP, and SNOOZE modes. HALT stops the CPU clock while preserving RAM and register contents (63 μA/MHz typical). STOP halts all clocks except the low-speed oscillator (0.52 μA typical). SNOOZE allows selected peripherals (e.g., UART, ADC) to operate while CPU sleeps - enabling background data acquisition with minimal power.
Can the R5F10377ANA#U0 drive a piezoelectric buzzer directly?
Yes, the R5F10377ANA#U0 can drive a piezoelectric buzzer directly using the PCLBUZ0 pin. This dedicated hardware output generates square waves from 2.44 kHz to 10 MHz without CPU intervention, eliminating software-timed GPIO toggling. The output is compatible with common 3–5 V buzzers and requires only a current-limiting resistor for protection.
What is the oscillator accuracy specification for the R5F10377ANA#U0?
The high-speed on-chip oscillator of the R5F10377ANA#U0 has a frequency accuracy of ±5.0% over the full operating temperature range of –40°C to +85°C, as specified in Section 1.3.2(2) of the RL78/G12 datasheet. This tolerance is sufficient for UART communication at standard baud rates (e.g., 9600 or 115200) but not for precision timing applications such as USB or real-time clocks.
R5F10377ANA#U0 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
R5F10377ANA#U0 FAQ
1.How can I place an order for R5F10377ANA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10377ANA#U0 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 R5F10377ANA#U0 reliable?
The price and inventory of R5F10377ANA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10377ANA#U0 is usually 5 days.
3.What payment methods are accepted for R5F10377ANA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10377ANA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10377ANA#U0?
R5F10377ANA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10377ANA#U0 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 R5F10377ANA#U0?
For technical support, including R5F10377ANA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10377ANA#U0 requirements.
6.How does Aetrix verify that R5F10377ANA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F10377ANA#U0 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 R5F10377ANA#U0 meets industry standards.
7.What is the process for return or replacement of R5F10377ANA#U0?
All R5F10377ANA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10377ANA#U0, 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 R5F10377ANA#U0 part is unused and in its original packaging.
Return procedure for R5F10377ANA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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