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Renesas R5F103A9ASP#10
- Part No.:
- R5F103A9ASP#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103A9ASP#10.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,680
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Product details
Overview
R5F103A9ASP#10 from Renesas Electronics is a 30-pin LSSOP-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, 768 B RAM, 10-bit 8-channel ADC, UART0, CSI00, and TAU0 with 8 timer channels - enabling compact sensor interface and motor control in battery-powered appliances.
For engineers reviewing the R5F103A9ASP#10 datasheet, R5F103A9ASP#10 pinout, R5F103A9ASP#10 application, or R5F103A9ASP#10 equivalent, key selection criteria include its 1.8–5.5 V operation, STOP/HALT/SNOOZE low-power modes, absence of data flash memory, and lack of DMA or safety functions compared to R5F102 variants - critical for cost-sensitive, non-safety-critical timing and I/O consolidation tasks.
Technical Context
The R5F103A9ASP#10 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.04167 µs at 24 MHz using the high-speed on-chip oscillator. Its clock system includes selectable 1–24 MHz internal oscillator (±5% accuracy over –40°C to +85°C) and external crystal support up to 20 MHz via X1/X2 pins.
Peripheral integration centers on single-channel UART0, single-channel simplified SPI (CSI00), no simplified I²C, and TAU0 timer array configured for 8 independent channels - with dedicated TI/TO pins mapped across Ports 0, 1, 2, 3, 5, and 14. No CRC, RAM guard, or SFR guard functions are implemented, distinguishing it from R5F102A-series counterparts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - enables direct Li-ion or dual-cell alkaline battery operation without regulator overhead |
| Code Flash / RAM | 8 KB flash (1 KB block size) / 768 B RAM - sufficient for firmware with moderate peripheral drivers and state machines |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference - supports analog sensing without external voltage reference |
| Timers | TAU0 with 8 channels, 12-bit interval timer, window watchdog - provides flexible PWM, capture, and timeout functions |
| Serial Interfaces | UART0 (1 channel), CSI00 (1 simplified SPI), no I²C - suitable for point-to-point sensor or display communication only |
| Power Modes | Halt (63 μA/MHz), Stop (0.52 μA), Snooze - extends battery life in intermittently active devices like remote controls |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Primary analog input or precision ADC reference source; requires clean decoupling |
| P21/ANI1/AVREFM | Analog input / ADC reference negative | Differential ADC reference pair with P20; enables ratiometric measurements |
| P10/SCK00/SCL00 | Clock output for CSI00 or I²C00 | Configurable as SPI clock or I²C clock - but I²C function disabled per R5F103 spec |
| P11/SI00/RxD0/SDA00 | Data input for CSI00 or UART0 receive | Shared serial input; UART mode selected by peripheral configuration, not pinmux hardware |
| P12/SO00/TxD0/TOOLTxD | Data output for CSI00 or UART0 transmit | Active-high UART TX or SPI SO; TOOLTxD enables debug communication during programming |
| P31/TI03/TO03/INTP4/PCLBUZ0 | Timer input/output with interrupt and buzzer | Multi-function pin supporting edge-triggered capture, PWM output, external interrupt, or programmable tone generation |
| RESET | Active-low reset input | Asynchronous reset assertion; internal pull-up ensures defined startup without external resistor |
| VDD / VSS | Power supply / ground | Dual power pins support low-noise analog/digital partitioning; REGC pin requires 0.47–1 µF capacitor to VSS |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >1-year operation on CR2032 in duty-cycled sensor nodes |
| On-chip high-speed oscillator | 24 MHz option with ±5% accuracy eliminates need for external crystal in non-precision timing apps |
| Hardware multiplier/divider | 16×16→32-bit signed/unsigned multiply supports real-time scaling and filtering without software overhead |
| Programmable clock/buzzer output | PCLBUZ0/PCLBUZ1 generate precise audio tones or clock signals (2.44 kHz–10 MHz) directly from timer hardware |
| Temperature sensor & BCD correction | Integrated die temperature sensor and BCD adjust circuit reduce BOM count in metering and display applications |
Applications
| Home Appliance Control | Wireless Remote Control |
|---|---|
Use Scenario: MCU in battery-powered air conditioner remote with LCD, IR LED, and button matrix. IC Role / Device Role / Timing Role: Central controller managing key scan, IR modulation, display refresh, and low-power wake-on-button. Use Value: STOP mode (0.52 μA) and key-interrupt wake eliminate always-on logic; 8 KB flash hosts IR protocol stack and UI logic. |
Use Scenario: Sub-1 GHz RF remote with integrated transceiver and tactile feedback. IC Role / Device Role / Timing Role: Baseband processor handling packet assembly, CRC-free payload framing, and buzzer confirmation. Use Value: UART0 interfaces directly with RF IC; PCLBUZ0 drives piezo element without driver transistor; 10-bit ADC reads battery voltage. |
| Smart Lighting Dimmer | Industrial Sensor Node |
Use Scenario: DALI-compatible LED driver with thermal foldback and user-set dimming curve. IC Role / Device Role / Timing Role: DALI physical layer controller with isolated UART, PWM dimming generator, and thermal monitoring. Use Value: TAU0's 8-channel timer supports simultaneous multi-channel PWM; 8-channel ADC reads thermistor and current sense. |
Use Scenario: Battery-powered vibration sensor node transmitting FFT coefficients via BLE gateway. IC Role / Device Role / Timing Role: Preprocessing engine performing RMS calculation, peak detection, and sleep/wake scheduling. Use Value: 16-bit multiply-accumulate unit accelerates fixed-point FFT kernels; HALT mode minimizes idle power between samples. |
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; same 30-pin LSSOP package | Required for firmware-over-the-air updates or safety-certified designs needing memory protection | Select when field firmware updates or functional safety compliance (IEC 61508 SIL-2) are mandatory |
| R5F103AAASP#10 | 16 KB code flash, same peripherals and power specs; differs only in flash capacity | Suitable for larger protocol stacks (e.g., Modbus RTU + diagnostics) without changing PCB layout | Choose for future-proofing firmware growth while retaining identical pinout and timing behavior |
Compared with R5F103A9ASP#10, R5F102AAASP#10 adds data retention and safety features at higher cost and power, while R5F103AAASP#10 trades flash headroom for identical peripheral compatibility - making both viable alternatives depending on firmware size and certification needs.
Availability
R5F103A9ASP#10 is available at Aetrix Electronics and suitable for home appliance control, wireless remote systems, smart lighting dimmers, and industrial sensor nodes requiring stable component supply across production lifecycles.
Supply support for R5F103A9ASP#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 electronics and general-purpose control applications - emphasizing energy efficiency over raw performance.
FAQ
What is the maximum operating frequency of the R5F103A9ASP#10?
The R5F103A9ASP#10 supports up to 24 MHz operation using its high-speed on-chip oscillator, with minimum instruction execution time of 0.04167 µs. External crystal operation is limited to 20 MHz in HS mode (VDD ≥ 2.7 V) or 8 MHz in LS mode (VDD ≥ 1.8 V), as specified in the RL78/G12 datasheet Rev.2.50.
Does the R5F103A9ASP#10 include data flash memory?
No, the R5F103A9ASP#10 does not include data flash memory. Per Renesas documentation, data flash (2 KB) is present only in R5F102-series variants. The R5F103A9ASP#10 relies solely on its 8 KB code flash for both program storage and non-volatile parameter retention via wear-leveling software techniques.
Which serial interfaces are available on the R5F103A9ASP#10?
The R5F103A9ASP#10 provides UART0 (1 channel), simplified SPI (CSI00, 1 channel), and no simplified I²C functionality. While pin labels include SDA00/SCL00, the R5F103 variant disables I²C peripheral logic - confirmed in Section 1.3.3 of the RL78/G12 datasheet.
What is the operating temperature range for the R5F103A9ASP#10?
The R5F103A9ASP#10 is rated for TA = –40°C to +85°C, designated for consumer applications ('A' suffix). It is not qualified for industrial-grade operation up to +105°C - that capability is reserved for 'G'-suffixed variants such as R5F103A9GSP#10.
Is the R5F103A9ASP#10 pin-compatible with other RL78/G12 30-pin LSSOP variants?
Yes, the R5F103A9ASP#10 shares identical 30-pin LSSOP (PLSP0030JB-B) packaging and pin mapping with all other 30-pin RL78/G12 devices including R5F102AAASP#10 and R5F103AAASP#10. However, peripheral enablement (e.g., DMA, data flash, I²C) varies by part number and must be verified in software initialization.
R5F103A9ASP#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:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
R5F103A9ASP#10 FAQ
1.How can I place an order for R5F103A9ASP#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103A9ASP#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 R5F103A9ASP#10 reliable?
The price and inventory of R5F103A9ASP#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103A9ASP#10 is usually 5 days.
3.What payment methods are accepted for R5F103A9ASP#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103A9ASP#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103A9ASP#10?
R5F103A9ASP#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103A9ASP#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 R5F103A9ASP#10?
For technical support, including R5F103A9ASP#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103A9ASP#10 requirements.
6.How does Aetrix verify that R5F103A9ASP#10 is sourced from the original manufacturer or authorized distributors?
All R5F103A9ASP#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 R5F103A9ASP#10 meets industry standards.
7.What is the process for return or replacement of R5F103A9ASP#10?
All R5F103A9ASP#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103A9ASP#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 R5F103A9ASP#10 part is unused and in its original packaging.
Return procedure for R5F103A9ASP#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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