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Renesas R5F103A8DSP#V0
- Part No.:
- R5F103A8DSP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F103A8DSP#V0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,369
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Product details
Overview
R5F103A8DSP#V0 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 integrates 8 KB code flash, 512 B RAM, 10-bit 8-channel ADC, 8-channel 16-bit TAU timer, and single UART/CSI/I²C serial interfaces - enabling compact sensor node and appliance control designs.
For engineers reviewing the R5F103A8DSP#V0 datasheet, R5F103A8DSP#V0 pinout, R5F103A8DSP#V0 application, or R5F103A8DSP#V0 equivalent, key selection criteria include its 8 KB flash / 512 B RAM configuration, absence of data flash memory, 1-channel UART-only serial capability, and LSSOP-30 package with 26 I/O pins - all critical for cost-sensitive, low-power MCU replacement or new design validation.
Technical Context
The R5F103A8DSP#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 1 µs (1 MHz), and operates across 1.8–5.5 V supply. Its peripheral set excludes DMA, CRC, RAM/SFR guard, and data flash - distinguishing it from R5F102-series variants.
It features a high-speed on-chip oscillator (±5.0% accuracy at –40°C to +85°C), 12-bit interval timer, window watchdog timer, on-chip power-on-reset and voltage detector (12-level LVD), and supports key interrupt, buzzer/clock output, and programmable I/O redirection via PIOR register - optimized for deterministic real-time control without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables efficient code density and deterministic interrupt latency |
| Operating Voltage | 1.8 V to 5.5 V; supports direct battery operation (e.g., 2×AA, Li-ion, or USB-powered systems) |
| Flash / RAM | 8 KB code flash + 512 B RAM; sufficient for firmware with moderate peripherals and state management |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference; suitable for analog sensor interfacing without external references |
| Timers | 8-channel 16-bit TAU + 12-bit interval timer + window watchdog; enables multi-task PWM, timing, and safety monitoring |
| Serial Interfaces | 1 UART, 1 CSI (SPI-compatible), 0 I²C channels; meets basic host communication and peripheral daisy-chaining needs |
| Package & Pins | LSSOP-30 (7.62 mm, 0.65 mm pitch); provides 26 GPIO including 8 analog inputs and 2 N-ch open-drain outputs |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm × 10.16 mm, 0.65 mm pitch), RoHS-compliant, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Primary analog reference input; must be decoupled for stable 10-bit conversion accuracy |
| P01/ANI16/TO00/RxD1 | Multi-function port / UART1 receive | Shared UART1 RX and timer output; requires PIOR configuration to assign function |
| P00/ANI17/TI00/TxD1 | Multi-function port / UART1 transmit | Enables full-duplex UART1 when paired with P01; TI00 allows external event capture |
| P120/ANI19 | Analog input channel 19 | One of eight dedicated ADC inputs; supports differential or single-ended sampling |
| P40/TOOL0 | Debug interface I/O | Used for on-chip debug communication; not intended for production signal routing |
| RESET | Active-low reset input | Asynchronous hardware reset; internal POR/LVD also asserts RESET internally |
| P137/INTP0 | External interrupt input 0 | Edge-triggered interrupt source; supports wake-up from STOP/HALT modes |
| VDD / VSS | Power supply / ground | Single 1.8–5.5 V supply; requires local 0.1 µF ceramic decoupling per VDD pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 63 µA/MHz active current; HALT/STOP/SNOOZE modes enable sub-µA sleep for battery longevity |
| On-chip clock system | Configurable high-speed oscillator (1–24 MHz, ±5%) eliminates need for external crystal in many applications |
| Hardware safety functions | Window watchdog timer and voltage detector (12-level LVD) provide fail-safe reset under brown-out or software hang |
| Flexible I/O configuration | Programmable pull-up, TTL input buffer, and N-ch open-drain (VDD-tolerant) on 9 pins enable mixed-voltage interfacing |
| Integrated peripherals | 8-channel 16-bit timer (TAU), 10-bit 8-channel ADC, and buzzer/clock output controller reduce BOM count |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in smart thermostat housing temperature/humidity sensing, display driving, and HVAC relay control. IC Role / Device Role / Timing Role: Primary system controller executing closed-loop PID logic, managing 10-bit ADC readings, and generating PWM fan speed signals. Use Value: 8 KB flash accommodates calibration tables and UI logic; 512 B RAM supports real-time sensor fusion; LSSOP-30 fits compact PCB layouts. |
Use Scenario: Battery-powered environmental monitor deployed in factory floor for vibration, temperature, and humidity logging. IC Role / Device Role / Timing Role: Low-power data acquisition engine using STOP mode between 10-second sensor reads and UART transmission bursts. Use Value: 63 µA/MHz active current and sub-µA STOP mode extend 2×AA battery life beyond 2 years; integrated ADC eliminates external signal conditioning. |
| Consumer IoT Gateway | White Goods Motor Control |
Use Scenario: Edge coordinator in smart home hub aggregating Zigbee/Z-Wave sensor data and forwarding via UART to Wi-Fi module. IC Role / Device Role / Timing Role: Protocol bridge handling UART framing, checksum validation, and GPIO-based status signaling to host MCU. Use Value: Single UART + 26 GPIO enables clean separation of radio interface and local control; 1.8 V operation supports energy-harvesting auxiliary power rails. |
Use Scenario: Mainboard MCU in washing machine controlling water valve sequencing, motor phase timing, and door lock actuation. IC Role / Device Role / Timing Role: Real-time motion controller generating precise 8-channel PWM outputs for BLDC commutation and feedback loop sampling. Use Value: 8-channel 16-bit TAU timer supports independent motor phase timing; on-chip LVD prevents erratic behavior during line dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A8DSP#V0 | Includes 2 KB data flash, DMA, CRC, RAM/SFR guard; same 8 KB flash, 512 B RAM, LSSOP-30 package | Required for firmware field updates or secure data logging; adds ~$0.15 BOM cost | Select when non-volatile parameter storage or enhanced safety certification (IEC 61508) is mandated |
| R5F103AAASP#V0 | 16 KB flash, 2 KB RAM, same peripheral set and package; no data flash or DMA | Suitable for larger firmware images (e.g., BLE stack integration) or complex state machines requiring >512 B RAM | Choose when future firmware expansion headroom or additional RAM for buffering is needed without changing layout |
Compared with R5F103A8DSP#V0, R5F102A8DSP#V0 adds data flash and safety peripherals at higher cost and complexity, while R5F103AAASP#V0 trades flash/RAM capacity for identical peripheral functionality - making R5F103A8DSP#V0 optimal for cost-constrained, fixed-feature embedded control.
Availability
R5F103A8DSP#V0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, consumer IoT gateways, and white goods motor control requiring stable component supply and long-term production support.
Supply support for R5F103A8DSP#V0 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 targeting cost-sensitive, battery-operated, and general-purpose embedded control applications - emphasizing energy efficiency, integrated peripherals, and simplified system design.
FAQ
What is the maximum operating frequency of the R5F103A8DSP#V0?
The R5F103A8DSP#V0 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When driven by an external crystal (X1), the maximum permissible frequency is 20 MHz for VDD ≥ 2.7 V or 8 MHz for VDD ≥ 1.8 V. Instruction execution time ranges from 0.04167 µs (24 MHz) to 1 µs (1 MHz), confirmed in the RL78/G12 datasheet Rev.2.50.
Does the R5F103A8DSP#V0 include data flash memory?
No, the R5F103A8DSP#V0 does not include data flash memory. This is a defining distinction from the R5F102-series variants (e.g., R5F102A8DSP#V0), which integrate 2 KB of data flash. The R5F103A8DSP#V0 relies solely on its 8 KB code flash for program and constant storage, with no dedicated non-volatile data retention area.
How many serial communication interfaces does the R5F103A8DSP#V0 support?
The R5F103A8DSP#V0 supports exactly one UART channel, one CSI (SPI-compatible) channel, and zero I²C channels. This configuration is fixed for all R5F103Ax 30-pin variants per the RL78/G12 datasheet Section 1.7. Unlike R5F102Ax parts, it lacks simplified I²C and second CSI channels - limiting multi-peripheral daisy-chaining capability.
What is the I/O count and analog input capability of the R5F103A8DSP#V0?
The R5F103A8DSP#V0 provides 26 total I/O pins in its LSSOP-30 package, including 8 dedicated analog input channels (ANI0–ANI3, ANI16–ANI19). Two pins (P20, P21) serve dual roles as AVREFP/AVREFM for the 10-bit ADC, and nine pins support N-ch open-drain outputs with VDD-tolerant voltage rating - enabling direct interfacing with 3.3 V or 5 V peripherals.
Is the R5F103A8DSP#V0 pin-compatible with other RL78/G12 30-pin variants?
Yes, the R5F103A8DSP#V0 shares identical pinout and package (LSSOP-30) with all other RL78/G12 30-pin variants including R5F102Ax, R5F103Ax, and R5F102A9/R5F103A9 series. Pin functions are consistent across the family, though peripheral availability (e.g., data flash, DMA, I²C) varies - requiring firmware adaptation but no PCB redesign when migrating within the 30-pin footprint.
R5F103A8DSP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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:
- 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 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F103A8DSP#V0 FAQ
1.How can I place an order for R5F103A8DSP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F103A8DSP#V0 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 R5F103A8DSP#V0 reliable?
The price and inventory of R5F103A8DSP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F103A8DSP#V0 is usually 5 days.
3.What payment methods are accepted for R5F103A8DSP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F103A8DSP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F103A8DSP#V0?
R5F103A8DSP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F103A8DSP#V0 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 R5F103A8DSP#V0?
For technical support, including R5F103A8DSP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F103A8DSP#V0 requirements.
6.How does Aetrix verify that R5F103A8DSP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F103A8DSP#V0 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 R5F103A8DSP#V0 meets industry standards.
7.What is the process for return or replacement of R5F103A8DSP#V0?
All R5F103A8DSP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F103A8DSP#V0, 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 R5F103A8DSP#V0 part is unused and in its original packaging.
Return procedure for R5F103A8DSP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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