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Renesas R5F102A9DSP#V0
- Part No.:
- R5F102A9DSP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A9DSP#V0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,577
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Product details
Overview
R5F102A9DSP#V0 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 16 KB code flash, 2 KB data flash, 2 KB RAM, a 24 MHz high-accuracy on-chip oscillator (±1.0% over –20°C to +85°C), and an 8-channel 10-bit A/D converter - enabling battery-powered sensor nodes and smart home controllers requiring deterministic real-time response.
For engineers reviewing the R5F102A9DSP#V0 datasheet, R5F102A9DSP#V0 pinout, R5F102A9DSP#V0 application, or R5F102A9DSP#V0 equivalent, key selection considerations include its 2-channel DMA support, CRC hardware acceleration, 8-channel TAU timer with PWM capability, integrated voltage detector with 12-level interrupt/reset selection, and dual buzzer/clock output functionality - all operating across 1.8 V to 5.5 V supply range.
Technical Context
The R5F102A9DSP#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, delivering 31 DMIPS at 24 MHz while maintaining true low-power operation (63 μA/MHz). Its memory subsystem includes 16 KB code flash with 1 KB block erase granularity, 2 KB data flash supporting background operation (BGO) and 1M write cycles, and 2 KB RAM with RAM guard protection.
Peripherals are optimized for mixed-signal control: it features one UART channel, one simplified SPI (CSI), one simplified I²C interface, 8-channel 16-bit TAU timer with interval/compare/PWM modes, watchdog and 12-bit interval timers, and a 10-bit A/D converter with internal reference (1.45 V) and temperature sensor - all accessible via 26 I/O pins including 9 N-ch open-drain outputs with VDD tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic 0.04167 µs min instruction time at 24 MHz |
| Memory | 16 KB code flash (1 KB blocks), 2 KB data flash (BGO enabled), 2 KB RAM with RAM guard |
| Operating Voltage | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 2.5 V, and 3.3 V peripherals without level shifters |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA typical), SNOOZE - enables sub-μA sleep with wake-on-peripheral event |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference, and integrated temperature sensor for self-calibration |
| Timers & PWM | 8-channel 16-bit TAU with PWM output capability; 12-bit interval timer and windowed watchdog timer |
| Oscillator Accuracy | High-speed on-chip oscillator ±1.0% (–20°C to +85°C); eliminates external crystal for cost-sensitive designs |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, tray packaging (#V0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial clock I/O | Shared CSI00 clock or I²C00 clock; configurable via PIOR register for flexible peripheral routing |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive / I²C data | Multi-function pin supporting full-duplex UART, slave-mode I²C, or master/slave CSI - reduces external component count |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit / debug TX | Simultaneous UART transmission and on-chip debug communication; enables real-time logging without dedicated debug port |
| P13/TxD2/SO20/SDAA0 | UART2 TX / CSI20 output / I²C00 data | Enables concurrent UART2 and I²C00 operation when configured as SDAA0 - supports dual-protocol sensor interfaces |
| P14/RxD2/SI20/SDA20 | UART2 RX / CSI20 input / I²C20 data | Hardware-assisted UART2 with framing error detection and simultaneous I²C20 slave mode - ideal for multi-sensor hubs |
| P20/ANI0/AVREFP | Analog input / A/D reference positive | Dual-role pin provides precise A/D reference voltage source while serving as primary analog input - improves measurement stability |
| P21/ANI1/AVREFM | Analog input / A/D reference negative | Completes differential A/D reference pair; enables ratiometric measurements immune to supply rail variation |
| REGC | Voltage regulator capacitor terminal | Must connect to VSS via 0.47–1 µF capacitor; stabilizes internal LDO for noise-immune analog performance |
Key Features
| Feature | Design Value |
|---|---|
| True low-power platform | 63 μA/MHz active current enables >1-year battery life in coin-cell-powered IoT endpoints |
| Data flash with BGO | Background operation allows firmware updates or parameter logging without halting real-time control tasks |
| Hardware CRC accelerator | Reduces firmware validation overhead by >90% vs. software CRC - critical for secure OTA updates |
| Multi-voltage I/O interface | Supports direct connection to 1.8 V, 2.5 V, and 3.3 V logic families without external level translators |
| On-chip voltage detector | 12 programmable threshold levels enable precise brown-out detection and graceful shutdown sequencing |
| Programmable clock/buzzer output | Dual PCLBUZ0/PCLBUZ1 outputs generate precise audio tones or system clocks up to 10 MHz - replaces external oscillators |
Applications
| Smart Thermostat Controller | Wireless Sensor Node |
|---|---|
Use Scenario: Local temperature/humidity sensing with HVAC actuation and BLE/Wi-Fi gateway interface. IC Role / Device Role / Timing Role: Primary system controller managing A/D sampling, PID loop execution, serial comms, and power state transitions. Use Value: Integrated 10-bit A/D with temperature sensor and 2 KB data flash enable local calibration storage and drift compensation without external components. |
Use Scenario: Battery-powered environmental monitor transmitting data every 5 minutes via LPWAN. IC Role / Device Role / Timing Role: Ultra-low-power system-on-chip handling sensor readout, data aggregation, and scheduled radio wake-up. Use Value: HALT mode (63 μA/MHz) and STOP mode (0.52 μA) extend CR2032 battery life beyond 2 years under typical duty cycle. |
| Appliance Motor Control | Industrial Panel Meter |
Use Scenario: Fan speed regulation and fault monitoring in white goods using hall-effect or back-EMF sensing. IC Role / Device Role / Timing Role: Real-time motor commutation controller with PWM generation, current sensing, and thermal protection. Use Value: 8-channel TAU timer with complementary PWM outputs supports 3-phase BLDC drive with dead-time insertion in firmware. |
Use Scenario: DIN-rail mounted meter reading analog inputs (voltage/current) and driving 4-digit LED display. IC Role / Device Role / Timing Role: Mixed-signal front-end processor performing precision A/D conversion, digital filtering, and display timing. Use Value: Internal 1.45 V reference and AVREFP/AVREFM pins provide stable ratiometric measurement baseline independent of VDD fluctuations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F103A9DSP#V0 | No data flash (0 KB), no DMA, no CRC, reduced oscillator accuracy (±5.0%), fewer serial interfaces | Suitable for cost-sensitive, non-data-logging applications where firmware update persistence is handled externally | Select when BGO-based parameter storage and hardware CRC are unnecessary and bill-of-materials cost is primary constraint |
| R5F102AAASP#V0 | Same package and memory (16 KB/2 KB/2 KB), but rated for consumer temp range only (–40°C to +85°C) | Identical peripheral set and pinout; differs only in temperature grade certification and test screening | Choose for identical functionality in commercial environments where industrial-grade qualification is not required |
Compared with R5F102A9DSP#V0, R5F103A9DSP#V0 removes data flash and safety accelerators to reduce cost, while R5F102AAASP#V0 offers identical silicon functionality at lower qualification cost - enabling design reuse across commercial and industrial product tiers.
Availability
R5F102A9DSP#V0 is available at Aetrix Electronics and suitable for smart home controllers, battery-powered sensors, appliance motor drives, and industrial panel meters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R5F102A9DSP#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 global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and mixed-signal control applications - balancing performance, energy efficiency, and integration density.
FAQ
What is the maximum operating frequency and instruction throughput of the R5F102A9DSP#V0?
The R5F102A9DSP#V0 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS of processing performance. Its RL78 CPU core achieves a minimum instruction execution time of 0.04167 µs at 24 MHz, enabling deterministic real-time response for time-critical control loops. The R5F102A9DSP#V0 supports both high-speed (24 MHz) and ultra-low-speed (1 MHz) operation modes to optimize power/performance trade-offs.
Does the R5F102A9DSP#V0 support background data flash programming during normal operation?
Yes, the R5F102A9DSP#V0 supports background operation (BGO) for its 2 KB data flash memory. This allows the R5F102A9DSP#V0 to execute application code from program memory while simultaneously rewriting data flash - essential for logging sensor data or storing calibration parameters without interrupting real-time control tasks.
What are the key differences between the R5F102A9DSP#V0 and the R5F103A9DSP#V0?
The R5F102A9DSP#V0 includes 2 KB data flash, 2-channel DMA, hardware CRC, and ±1.0% oscillator accuracy, while the R5F103A9DSP#V0 omits data flash and DMA, lacks CRC, and has ±5.0% oscillator tolerance. Both share the same 16 KB code flash, 2 KB RAM, and 30-pin LSSOP package - making the R5F102A9DSP#V0 suitable for applications requiring persistent parameter storage and enhanced safety features.
How many analog input channels does the R5F102A9DSP#V0 support, and what reference options are available?
The R5F102A9DSP#V0 supports 8 analog input channels (ANI0–ANI3, ANI16–ANI19) with 10-bit resolution. It provides internal reference voltage (1.45 V) and supports external differential referencing via AVREFP and AVREFM pins - enabling ratiometric measurements that reject supply rail variations and improve measurement accuracy in noisy environments.
What power-saving modes are available on the R5F102A9DSP#V0, and what are their typical current draws?
The R5F102A9DSP#V0 offers HALT mode (63 μA/MHz), STOP mode (0.52 μA typical), and SNOOZE mode - allowing dynamic power scaling based on workload. In STOP mode, the R5F102A9DSP#V0 retains RAM content and wakes on external interrupt or RTC alarm, making it ideal for intermittent-sensing applications like wireless sensor nodes where average current must remain below 1 μA.
R5F102A9DSP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- 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:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 23
- Program Memory Size:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- 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:
R5F102A9DSP#V0 FAQ
1.How can I place an order for R5F102A9DSP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A9DSP#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 R5F102A9DSP#V0 reliable?
The price and inventory of R5F102A9DSP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A9DSP#V0 is usually 5 days.
3.What payment methods are accepted for R5F102A9DSP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A9DSP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A9DSP#V0?
R5F102A9DSP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A9DSP#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 R5F102A9DSP#V0?
For technical support, including R5F102A9DSP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A9DSP#V0 requirements.
6.How does Aetrix verify that R5F102A9DSP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F102A9DSP#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 R5F102A9DSP#V0 meets industry standards.
7.What is the process for return or replacement of R5F102A9DSP#V0?
All R5F102A9DSP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A9DSP#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 R5F102A9DSP#V0 part is unused and in its original packaging.
Return procedure for R5F102A9DSP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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