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Renesas R5F103A9DSP#X0
- Part No.:
- R5F103A9DSP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103A9DSP#X0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,832
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Product details
Overview
R5F103A9DSP#X0 from Renesas Electronics is a 30-pin LSSOP packaged 16-bit RL78/G12 microcontroller designed for industrial embedded control. It features 8 KB code flash, 768 B RAM, 8-channel 10-bit A/D converter, 8-channel 16-bit timer, and operates from 1.8 V to 5.5 V across –40°C to +85°C ambient range - deployed in smart sensor nodes requiring ultra-low power and deterministic real-time response.
For engineers reviewing the R5F103A9DSP#X0 datasheet, R5F103A9DSP#X0 pinout, R5F103A9DSP#X0 application, or R5F103A9DSP#X0 equivalent, key selection criteria include its industrial-grade temperature rating (–40°C to +85°C), absence of data flash memory, UART/CSI-only serial interface configuration, and lack of DMA controller - distinguishing it from R5F102-series variants.
Technical Context
The R5F103A9DSP#X0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports high-speed on-chip oscillator operation at 24 MHz (±5% accuracy over –40°C to +85°C) and low-power STOP/HALT/SNOOZE modes enabling sub-63 μA/MHz active current consumption.
Peripheral integration includes one I²C channel, up to three UART channels, up to three CSI channels, and programmable clock/buzzer output. Unlike R5F102A9DSP#X0, this part omits data flash, DMA, CRC, RAM guard, and SFR guard functions - confirming its role as a cost-optimized industrial MCU 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 and 1 MB address space |
| Flash / RAM | 8 KB code flash memory; 768 B on-chip RAM - sufficient for compact firmware with real-time ISR handling |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8 V, 3.3 V, and 5 V logic domains |
| Temperature Range | –40°C to +85°C (Industrial grade D-class) - qualified for factory automation and motor control environments |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference - supports analog sensing without external voltage reference |
| Timers | 8-channel 16-bit timer array (TAU) plus 12-bit interval timer and watchdog - enables multi-channel PWM and precise timing intervals |
| Serial Interfaces | 1 × I²C, up to 3 × UART, up to 3 × CSI - provides flexible communication for sensor fusion and host connectivity |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65 mm pitch), RoHS-compliant, surface-mountable with exposed pad not required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / positive reference | Primary analog reference input; accepts 0–VDD range for A/D conversion |
| P21/ANI1/AVREFM | Analog input / negative reference | Differential reference input; used with AVREFP for ratiometric measurements |
| P10/SCK00/SCL00 | Serial clock I/O | Shared SPI clock or I²C clock; configurable via peripheral I/O redirection register (PIOR) |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive | Primary UART0 RX line; also serves as SPI data-in or I²C data line |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit | Primary UART0 TX line; supports tool communication and host interface |
| P13/TxD2/SO20 | Secondary UART transmit / SPI output | Enables dual-UART or SPI slave operation without external level-shifting |
| P14/RxD2/SI20/SDA20 | Secondary UART receive / SPI input | Supports concurrent UART2 and I²C/SPI peripherals on shared pins |
| RESET | Active-low reset input | Asynchronous reset pin; accepts standard push-pull or open-drain reset sources |
| X1/X2 | Crystal oscillator inputs | Supports external crystal (1–20 MHz) for precise timing-critical applications |
| VDD/VSS | Power supply / ground | Dual power pins ensure stable core and I/O rail decoupling; requires local 0.1 µF ceramic capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 63 μA/MHz active current enables battery-powered operation for >5 years in duty-cycled sensor nodes |
| On-chip high-speed oscillator | 24 MHz ±5% accuracy eliminates need for external crystal in cost-sensitive designs |
| Hardware-peripheral flexibility | Peripheral I/O redirection register (PIOR) allows dynamic remapping of UART/CSI/I²C pins to optimize PCB layout |
| Industrial-grade reliability | –40°C to +85°C operation with on-chip POR, LVD (12-level selectable), and watchdog timer ensures robust field deployment |
| Integrated analog front-end | 8-channel 10-bit A/D with internal 1.45 V reference and temperature sensor reduces BOM count for environmental monitoring |
Applications
| Smart Thermostats | Industrial Motor Controllers |
|---|---|
Use Scenario: Residential HVAC systems requiring precise temperature/humidity sensing and relay-driven actuation. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, PID computation, and triac/relay timing via 16-bit TAU channels. Use Value: Integrated 10-bit A/D and 8-channel timer enable closed-loop control without external ADC or timer ICs - reducing component count by ≥3. | Use Scenario: Brushless DC motor drives in packaging machinery with position feedback and current sensing. IC Role / Device Role / Timing Role: Real-time motion controller executing commutation logic and fault detection using hardware timers and interrupt prioritization. Use Value: Sub-63 μA/MHz active power and STOP mode support extend runtime in energy-conscious factory equipment with intermittent operation. |
| Programmable Logic Relays | IoT Edge Gateways |
Use Scenario: DIN-rail mounted PLC modules interfacing with 24 V digital I/O and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler and I/O scheduler managing UART-based Modbus framing and GPIO state scanning. Use Value: Three UART channels allow simultaneous RS-485 master/slave, debug console, and BLE module interface - eliminating UART multiplexing complexity. | Use Scenario: Low-power edge node aggregating data from multiple sensors before forwarding via Wi-Fi or cellular modem. IC Role / Device Role / Timing Role: Sensor hub coordinating time-synchronized sampling across 8 A/D channels and buffering data in 768 B RAM. Use Value: 1.8 V minimum operating voltage permits direct connection to LiSOCl₂ batteries (3.6 V nominal), avoiding buck-boost conversion losses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A9DSP#X0 | Includes 2 KB data flash, DMA, CRC, RAM/SFR guard; same package and pinout | Required where background data logging or safety-critical checksum validation is needed | Select when firmware update resilience or functional safety compliance (IEC 61508 SIL-2) is mandated |
| R5F103AAASP#X0 | Same RL78/G12 core but 20-pin LSSOP package; 16 KB flash, 256 B RAM, 11-channel A/D | Suitable for space-constrained designs with lower peripheral count requirements | Choose for compact footprint and higher flash density where fewer I/O and timers suffice |
Compared with R5F103A9DSP#X0, R5F102A9DSP#X0 adds data flash and safety features at higher cost and power, while R5F103AAASP#X0 trades I/O count and RAM for smaller size and greater code storage - making each optimal for distinct industrial subsystem roles.
Availability
R5F103A9DSP#X0 is available at Aetrix Electronics and suitable for industrial motor controllers, smart thermostats, and programmable logic relays requiring stable component supply and long-term production continuity.
Supply support for R5F103A9DSP#X0 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 delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control applications - emphasizing minimal BOM count, integrated analog peripherals, and robust operation across extended temperature ranges.
FAQ
What is the maximum operating frequency of the R5F103A9DSP#X0?
The R5F103A9DSP#X0 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, with ±5% accuracy over the full –40°C to +85°C industrial temperature range. External crystal operation is rated up to 20 MHz. At 24 MHz, the RL78 core achieves 31 DMIPS performance, enabling real-time execution of control algorithms and protocol stacks without external acceleration.
Does the R5F103A9DSP#X0 include data flash memory?
No, the R5F103A9DSP#X0 does not include data flash memory. Per Renesas documentation, data flash (2 KB) is present only in R5F102-series variants. The R5F103A9DSP#X0 relies solely on its 8 KB code flash for program storage and non-volatile parameter retention via EEPROM emulation techniques in application firmware.
What package type and pin count does the R5F103A9DSP#X0 use?
The R5F103A9DSP#X0 uses a 30-pin plastic LSSOP package with 0.65 mm pitch and 7.62 mm body width. This package is RoHS-compliant, surface-mountable, and compatible with standard reflow profiles. Pin assignments match the RL78/G12 30-pin outline, including dedicated analog reference inputs (AVREFP/AVREFM), multiple UART/CSI/I²C-capable pins, and X1/X2 crystal connections.
How many A/D converter channels does the R5F103A9DSP#X0 support?
The R5F103A9DSP#X0 integrates an 8-channel, 10-bit successive-approximation A/D converter with internal 1.45 V reference voltage and temperature sensor. Input channels include ANI0–ANI3 and ANI16–ANI19. The A/D module supports single-ended and differential measurement modes, and conversion results are accessible via dedicated SFRs with interrupt capability upon completion.
Is the R5F103A9DSP#X0 pin-compatible with other RL78/G12 variants?
The R5F103A9DSP#X0 shares identical pinout and package with other 30-pin RL78/G12 variants including R5F102A9DSP#X0 and R5F103AAASP#X0. However, functional differences exist: R5F102A9DSP#X0 adds data flash, DMA, and safety features; R5F103AAASP#X0 uses a 20-pin LSSOP package. PCB layout must account for missing peripherals when substituting R5F103A9DSP#X0 into R5F102A9DSP#X0 designs.
R5F103A9DSP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- 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:
- 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:
R5F103A9DSP#X0 FAQ
1.How can I place an order for R5F103A9DSP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103A9DSP#X0 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 R5F103A9DSP#X0 reliable?
The price and inventory of R5F103A9DSP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103A9DSP#X0 is usually 5 days.
3.What payment methods are accepted for R5F103A9DSP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103A9DSP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103A9DSP#X0?
R5F103A9DSP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103A9DSP#X0 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 R5F103A9DSP#X0?
For technical support, including R5F103A9DSP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103A9DSP#X0 requirements.
6.How does Aetrix verify that R5F103A9DSP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F103A9DSP#X0 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 R5F103A9DSP#X0 meets industry standards.
7.What is the process for return or replacement of R5F103A9DSP#X0?
All R5F103A9DSP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103A9DSP#X0, 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 R5F103A9DSP#X0 part is unused and in its original packaging.
Return procedure for R5F103A9DSP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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