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Renesas R5F103AAASP#10
- Part No.:
- R5F103AAASP#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103AAASP#10.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,530
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Product details
Overview
R5F103AAASP#10 from Renesas Electronics is a 30-pin LSSOP packaged 16-bit RL78/G12 microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It features 16 KB code flash, 2 KB RAM, 8-channel 10-bit A/D converter, 1 UART, 1 simplified SPI (CSI), and operates from 1.8 V to 5.5 V with 63 μA/MHz active current. It targets battery-powered sensor nodes and smart home peripherals requiring deterministic real-time response.
For engineers reviewing the R5F103AAASP#10 datasheet, R5F103AAASP#10 pinout, R5F103AAASP#10 application, or R5F103AAASP#10 equivalent, key selection considerations include its lack of data flash memory, absence of DMA and CRC hardware, reduced serial interface count versus R5F102 variants, and ±5.0% high-speed on-chip oscillator accuracy over –40°C to +85°C.
Technical Context
The R5F103AAASP#10 implements the RL78 CISC CPU core with 3-stage pipeline, 1 MB address space, and configurable instruction execution time (0.04167 μs at 24 MHz). Its peripheral set is optimized for minimal footprint: single UART channel, one CSI interface, no I²C support, and TAU timer with 8 output channels-configured via PIOR register for flexible PWM or capture/compare functions.
Power management includes HALT, STOP, and SNOOZE modes, POR/LVD reset circuitry, and a 15 kHz low-speed on-chip oscillator for watchdog operation. The device lacks data flash, DMA, and safety features (CRC, RAM/SFR guard) present in R5F102 counterparts-making it suitable for cost-sensitive, non-safety-critical control tasks where firmware updates occur infrequently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control at up to 24 MHz |
| Flash Memory | 16 KB code flash only; no data flash-firmware storage only, no runtime parameter logging |
| RAM | 2 KB internal RAM; sufficient for stack, variables, and small buffers in sensor/control firmware |
| A/D Converter | 10-bit resolution, 8 input channels; supports analog sensing with internal 1.45 V reference |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI); no I²C-suitable for basic host communication and sensor interfacing |
| Operating Voltage | 1.8 V to 5.5 V; enables direct battery operation (e.g., 2×AA, Li-ion, or USB-supplied systems) |
| Temperature Range | –40°C to +85°C (Consumer grade A); validated for indoor consumer electronics environments |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), PLSP0030JB-B footprint. Pinout conforms to RL78/G12 30-pin top-view configuration with dedicated analog inputs (ANI0–ANI3, ANI16–ANI19), dual timer I/O (TI00–TI07/TO00–TO07), UART (RxD0/TxD0), CSI (SCK00/SI00/SO00), RESET, and power (VDD/VSS/REGC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / positive reference | Primary analog input with selectable AVREFP as A/D reference voltage source |
| P21/ANI1/AVREFM | Analog input / negative reference | Differential analog input or AVREFM for ratiometric measurements |
| P10/SCK00/SCL00 | Clock output for CSI or I²C | Configurable as SPI clock or I²C clock-only CSI function enabled on R5F103AA |
| P11/SI00/RxD0/TOOLRxD | Data input / UART receive / debug RX | Shared UART receive and tool interface; supports bootloader and debug communication |
| P12/SO00/TxD0/TOOLTxD | Data output / UART transmit / debug TX | Shared UART transmit and tool interface; enables firmware update via serial |
| RESET | Active-low reset input | Hardware reset initiation; also supports internal reset sources (POR, LVD, WDT) |
| REGC | Voltage regulator capacitor terminal | Must connect 0.47–1 µF capacitor to VSS for stable internal regulator operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables multi-year battery life in intermittent-sensing applications |
| Flexible clock system | High-speed on-chip oscillator (1–24 MHz, ±5.0%) eliminates external crystal for cost-sensitive designs |
| Peripheral I/O redirection | PIOR register allows dynamic remapping of UART/CSI pins to alternate port pins-reducing PCB routing complexity |
| On-chip debug support | Integrated debug interface enables in-circuit programming and real-time trace without external JTAG adapter |
| Robust reset architecture | POR, LVD (12-level selectable), watchdog, and illegal-instruction detection ensure reliable startup and fault recovery |
Applications
| Smart Thermostat Sensor Node | USB-Powered Industrial Controller |
|---|---|
Use Scenario: Battery-operated wall-mounted temperature/humidity sensor transmitting data via UART to gateway MCU. IC Role / Device Role / Timing Role: Primary controller executing sensor acquisition, local calibration, and serial protocol framing at 24 MHz. Use Value: 16 KB flash stores full sensor driver + BLE-serial bridge firmware; 63 μA/MHz extends AA-battery life beyond 3 years in 10-second wake cycles. | Use Scenario: DIN-rail mounted PLC module receiving commands via USB-to-UART bridge and driving relays via GPIO. IC Role / Device Role / Timing Role: Real-time I/O coordinator managing 8-channel relay timing, analog monitoring, and UART command parsing. Use Value: 8-channel TAU timer provides independent PWM outputs for precise relay coil pre-charge control; 1.8–5.5 V range accommodates unregulated 5 V USB supply. |
| White Goods Motor Control | IoT Smoke Detector |
Use Scenario: Fan speed controller in refrigerator compressor subsystem using hall-effect feedback and PWM drive. IC Role / Device Role / Timing Role: Dedicated motor timing engine generating synchronized 3-phase PWM with dead-time insertion. Use Value: 8-channel TAU supports 3-phase complementary outputs with programmable dead time; 10-bit A/D monitors current sense resistor for closed-loop regulation. | Use Scenario: Standalone photoelectric smoke alarm with self-test, low-battery warning, and audible alert. IC Role / Device Role / Timing Role: System supervisor managing CO/temperature sensing, buzzer tone generation, and LED status signaling. Use Value: Integrated PCLBUZ0/PCLBUZ1 outputs generate precise 2.44–10 MHz tones for alarm siren; SNOOZE mode reduces average current to <1 μA during standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102AAASP#10 | Includes 2 KB data flash, DMA, CRC, RAM/SFR guard; ±1.0% oscillator accuracy | Required for field-updatable firmware or safety-certified designs (IEC 60730) | Select when runtime parameter storage or functional safety compliance is mandatory |
| R5F103AAFSB#30 | Same core/peripherals but in 30-pin HWQFN (4×4 mm) package; identical electrical specs | Preferred for space-constrained PCBs needing smaller footprint and thermal performance | Choose for high-density layouts where LSSOP height or thermal dissipation is limiting |
Compared with R5F102AAASP#10, the R5F103AAASP#10 trades data flash, DMA, and tighter oscillator tolerance for lower BOM cost and reduced firmware complexity; versus R5F103AAFSB#30, it offers identical functionality in a larger, easier-to-solder LSSOP package suited for prototyping and low-volume assembly.
Availability
R5F103AAASP#10 is available at Aetrix Electronics and suitable for smart home sensors, white goods controllers, and IoT smoke detectors requiring stable component supply, long-term industrial availability, and Renesas-qualified manufacturing traceability.
Supply support for R5F103AAASP#10 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 markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated consumer and industrial control applications requiring high integration and robust real-time performance.
FAQ
What is the maximum operating frequency of the R5F103AAASP#10?
The R5F103AAASP#10 supports a maximum system clock frequency of 24 MHz using the high-speed on-chip oscillator. This enables 31 DMIPS performance while maintaining 63 μA/MHz efficiency. External crystal operation is limited to 20 MHz in HS mode (VDD ≥ 2.7 V) or 16 MHz (VDD ≥ 2.4 V), per the RL78/G12 electrical specifications. The R5F103AAASP#10 achieves this timing without requiring external clock components.
Does the R5F103AAASP#10 include data flash memory?
No, the R5F103AAASP#10 does not include data flash memory. As confirmed in Section 1.3.1 of the RL78/G12 datasheet, R5F103-series devices omit the 2 KB data flash present in R5F102 variants. Firmware must store runtime parameters in RAM or external EEPROM. This design choice reduces cost and simplifies qualification for applications where infrequent field updates are acceptable.
What are the key differences between R5F103AAASP#10 and R5F102AAASP#10?
The R5F103AAASP#10 omits data flash, DMA controller, CRC calculation unit, and RAM/SFR guard features found in the R5F102AAASP#10. Its high-speed on-chip oscillator has ±5.0% accuracy (vs. ±1.0% in R5F102), and it supports fewer serial interfaces (no I²C, only 1 UART and 1 CSI). These differences make the R5F103AAASP#10 lower-cost and simpler for non-safety-critical applications.
Which development tools support the R5F103AAASP#10?
The R5F103AAASP#10 is supported by Renesas' e² studio IDE, CS+ (formerly CubeSuite+), and the Renesas Flash Programmer. Hardware debugging requires the E2 emulator Lite or E2 emulator, both compatible with the on-chip debug interface. Evaluation is possible using the RL78/G12 Starter Kit (YRDKRL78G12), which includes sample code and peripheral drivers specifically validated for R5F103AA-series devices.
What is the purpose of the REGC pin on the R5F103AAASP#10?
The REGC pin on the R5F103AAASP#10 connects to the internal voltage regulator's stabilization capacitor. Per datasheet Page 9 and Absolute Maximum Ratings Table, a 0.47–1 µF capacitor must be placed between REGC and VSS to ensure stable operation of the on-chip regulator. Failure to install this capacitor may cause erratic behavior, especially during low-voltage or high-temperature operation, and violates the device's absolute maximum rating for REGC terminal voltage.
R5F103AAASP#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 23
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 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:
R5F103AAASP#10 FAQ
1.How can I place an order for R5F103AAASP#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103AAASP#10 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 R5F103AAASP#10 reliable?
The price and inventory of R5F103AAASP#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103AAASP#10 is usually 5 days.
3.What payment methods are accepted for R5F103AAASP#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103AAASP#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103AAASP#10?
R5F103AAASP#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103AAASP#10 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 R5F103AAASP#10?
For technical support, including R5F103AAASP#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103AAASP#10 requirements.
6.How does Aetrix verify that R5F103AAASP#10 is sourced from the original manufacturer or authorized distributors?
All R5F103AAASP#10 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 R5F103AAASP#10 meets industry standards.
7.What is the process for return or replacement of R5F103AAASP#10?
All R5F103AAASP#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103AAASP#10, 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 R5F103AAASP#10 part is unused and in its original packaging.
Return procedure for R5F103AAASP#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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