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Renesas R5F102A9GSP#10
- Part No.:
- R5F102A9GSP#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A9GSP#10.pdf
- Description:
- 16BIT MCU RL78/G12 12K 30LSSOP -
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
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Product details
Overview
R5F102A9GSP#10 from Renesas Electronics is a 30-pin LSSOP-packaged RL78/G12 16-bit microcontroller designed for industrial embedded control at extended temperature (–40°C to +105°C). It integrates 16 KB code flash, 2 KB data flash, 2 KB RAM, an 8-channel 10-bit A/D converter, dual UART/CSI/I²C serial interfaces, and 8-channel TAU timer with PWM capability - enabling compact motor control, sensor node, and smart appliance designs.
For engineers reviewing the R5F102A9GSP#10 datasheet, R5F102A9GSP#10 pinout, R5F102A9GSP#10 application, or R5F102A9GSP#10 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in industrial temperature environments, and confirmed alternative options for design continuity and supply resilience.
Technical Context
The R5F102A9GSP#10 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution as fast as 0.04167 µs at 24 MHz (high-speed on-chip oscillator) and ultra-low-power HALT/STOP/SNOOZE modes. Its voltage range spans 1.8 V to 5.5 V, enabling direct battery or wide-input power rail operation without external regulators.
It features integrated safety mechanisms including CRC calculation unit, RAM guard, and SFR guard - all confirmed for R5F102-series parts - alongside background data flash rewriting (BGO), self-programming with flash shield window, and 12-level voltage detector with interrupt/reset selection. The device operates in HS mode up to 20 MHz with external crystal or 24 MHz with internal oscillator (±1.0% accuracy at –20°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with low gate count and minimal power. |
| Operating Voltage | 1.8 V to 5.5 V - supports single-supply operation across Li-ion, alkaline, and industrial 3.3/5 V rails without level-shifting. |
| Flash Memory | 16 KB code flash + 2 KB data flash - allows firmware updates and nonvolatile parameter storage with 1M-cycle endurance (data flash). |
| RAM Size | 2 KB on-chip RAM - sufficient for real-time control stacks, sensor buffers, and communication protocol handling in compact systems. |
| A/D Converter | 10-bit resolution, 8 input channels - provides accurate analog sensing for temperature, voltage, current, and position feedback. |
| Timer Resources | 8-channel 16-bit TAU with PWM output - supports multi-phase motor control, LED dimming, and precise timing generation. |
| Serial Interfaces | 1 UART, 1 CSI (SPI-compatible), 1 I²C - enables concurrent communication with sensors, displays, and host controllers. |
| Temperature Range | –40°C to +105°C (G-grade) - qualified for under-hood automotive, industrial PLC, and outdoor equipment applications. |
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 |
|---|---|---|
| P10/SCK00/SCL00 | Serial clock I/O | Primary SPI/I²C clock line; configurable via PIOR for flexible peripheral routing. |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive | Shared function pin supporting SPI slave-in, UART RX, or I²C data - reduces external component count. |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit | Drives UART TX or SPI SO; also routes debug tool TX signal - simplifies development and production test access. |
| P13/TxD2/SO20/SDAA0 | Secondary UART TX / SPI SO / I²C data | Enables dual-serial communication without external multiplexing; SDAA0 supports I²C addressable slave mode. |
| P14/RxD2/SI20/SDA20 | Secondary UART RX / SPI SI / I²C data | Complements P13 for full-duplex secondary interface - ideal for isolated sensor bus or display controller link. |
| P20/ANI0/AVREFP | Analog input / ADC reference high | Serves as primary ADC channel and precision reference voltage source - improves measurement stability in noisy environments. |
| P21/ANI1/AVREFM | Analog input / ADC reference low | Provides differential reference pair with P20; enables ratiometric measurements and offset calibration. |
| RESET | Active-low reset input | Accepts external reset assertion; internally tied to POR, LVD, watchdog, and illegal-instruction reset sources. |
| REGC | Voltage regulator capacitor terminal | Requires 0.47–1 µF capacitor to VSS - stabilizes internal LDO for noise-immune analog and digital operation. |
| X1/X2 | Crystal oscillator inputs | Supports 1–20 MHz crystal/resonator for precise timing; enables clock accuracy critical for UART baud rate and real-time scheduling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current - extends battery life in portable industrial monitors and wireless sensor nodes. |
| Data flash with BGO | Background operation allows full CPU execution during 2 KB data flash rewrite - eliminates latency in logging or configuration updates. |
| Dual UART + CSI + I²C | Three independent serial protocols on dedicated pins - enables simultaneous communication with BLE module, display, and analog sensor array. |
| On-chip safety functions | CRC unit, RAM guard, and SFR guard - detect memory corruption and prevent unintended register writes in safety-critical control loops. |
| Industrial temperature grade | G-grade (–40°C to +105°C) qualification - ensures reliable startup and operation in uncontrolled thermal environments. |
| Self-programming with shield window | Secure firmware update capability with flash shield window protection - prevents unauthorized readout or overwrite of protected sectors. |
Applications
| Motor Control System | Smart Thermostat |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC fans or pumps in HVAC units. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing PWM outputs, reading hall-effect sensors and thermistors. Use Value: Integrated 8-channel TAU with complementary PWM, 10-bit ADC for current sensing, and 2 KB data flash for runtime calibration tables reduce BOM and PCB area. |
Use Scenario: Residential or commercial wall-mounted thermostat with local display, wireless connectivity, and environmental monitoring. IC Role / Device Role / Timing Role: Central MCU handling temperature/humidity acquisition, UI rendering, button debounce, and UART-to-ESP32 bridge. Use Value: Dual UART enables simultaneous local display interface and Wi-Fi module communication; 16 KB flash accommodates OTA bootloader and feature-rich firmware. |
| Industrial Sensor Node | Programmable Power Supply |
Use Scenario: DIN-rail mounted sensor aggregator collecting analog inputs (4–20 mA, 0–10 V) and digital status from field devices. IC Role / Device Role / Timing Role: Data acquisition engine with 8-channel ADC, serial protocol translation (Modbus RTU over UART), and local storage buffer. Use Value: 2 KB data flash stores timestamped logs; G-grade temp rating ensures reliability in control cabinets; low 63 μA/MHz current minimizes self-heating. |
Use Scenario: Lab-grade bench power supply with programmable voltage/current limits, remote control, and safety interlocks. IC Role / Device Role / Timing Role: Precision control unit managing DAC outputs, reading sense resistors, enforcing overvoltage/overcurrent shutdown, and running USB-CDC or RS-232 stack. Use Value: On-chip voltage detector with 12 selectable thresholds enables robust fault response; CRC unit validates configuration integrity before applying setpoints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102AAASP#V0 | Same 30-pin LSSOP package, identical peripherals, but A-grade (–40°C to +85°C) and tray packaging (#V0 vs #10). | Consumer or lower-temp industrial use only; lacks extended temperature qualification. | Select when operating ambient stays ≤ +85°C and cost sensitivity outweighs thermal margin. |
| R5F103A9GSP#10 | Same pinout and package, but no data flash (0 KB), no DMA, no CRC/RAM/SFR guard, and ±5.0% oscillator accuracy. | Lower-cost control tasks where data logging, safety checking, or high-accuracy timing is unnecessary. | Choose for basic I/O or timing-only applications where R5F102A9GSP#10's enhanced features are unused. |
Compared with R5F102AAASP#V0, R5F102A9GSP#10 adds guaranteed +105°C operation and different packaging; compared with R5F103A9GSP#10, it delivers essential data retention, safety logic, and timing precision - making it the only choice for certified industrial firmware updates and fail-safe operation.
Availability
R5F102A9GSP#10 is available at Aetrix Electronics and suitable for industrial motor drives, smart building controllers, DIN-rail sensor nodes, and programmable power supplies requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for R5F102A9GSP#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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/G12 family, including R5F102A9GSP#10, was engineered for cost-sensitive, ultra-low-power embedded control in industrial and consumer appliances - balancing performance, safety, and energy efficiency in compact packages.
FAQ
What is the maximum operating frequency of the R5F102A9GSP#10?
The R5F102A9GSP#10 supports up to 24 MHz using its high-speed on-chip oscillator (±1.0% accuracy at –20°C to +85°C) or up to 20 MHz with an external crystal (X1). In HS mode, instruction execution time reaches 0.04167 µs, enabling real-time response in motor control and sensor fusion applications. The device maintains full functionality across its 1.8–5.5 V supply range.
Does the R5F102A9GSP#10 include data flash memory?
Yes, the R5F102A9GSP#10 includes 2 KB of data flash memory - a key differentiator from the R5F103 series. This memory supports background operation (BGO), allowing CPU execution during erase/write cycles, and guarantees 1,000,000 rewrite cycles at 1.8–5.5 V. It is used for storing calibration data, device configuration, or event logs without requiring external EEPROM.
What safety features are implemented in the R5F102A9GSP#10?
The R5F102A9GSP#10 integrates CRC calculation hardware, RAM guard, and SFR guard - all confirmed in RL78/G12 documentation for R5F102-series parts. These features detect memory corruption, prevent accidental register overwrites, and enhance reliability in industrial control loops. Combined with the 12-level voltage detector and window watchdog timer, they support functional safety requirements in IEC 61508-2 SIL2-aligned designs.
Which serial communication interfaces does the R5F102A9GSP#10 support?
The R5F102A9GSP#10 supports one UART channel, one simplified SPI (CSI) channel, and one I²C channel - all on dedicated pins with configurable alternate functions via PIOR. Unlike 20/24-pin variants, the 30-pin R5F102A9GSP#10 retains full serial capability while adding extra GPIO and analog inputs, making it ideal for systems requiring multiple concurrent peripheral connections.
Is the R5F102A9GSP#10 qualified for extended temperature operation?
Yes, the "G" suffix in R5F102A9GSP#10 denotes industrial-grade qualification for –40°C to +105°C ambient operation. This is verified in Renesas' official datasheet (R01DS0193EJ0250) and supported by thermal design margins in the LSSOP package. It is suitable for under-hood automotive modules, factory-floor controllers, and outdoor infrastructure where ambient temperatures exceed +85°C.
R5F102A9GSP#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:
- -
- 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:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F102A9GSP#10 FAQ
1.How can I place an order for R5F102A9GSP#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A9GSP#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 R5F102A9GSP#10 reliable?
The price and inventory of R5F102A9GSP#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A9GSP#10 is usually 5 days.
3.What payment methods are accepted for R5F102A9GSP#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A9GSP#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A9GSP#10?
R5F102A9GSP#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A9GSP#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 R5F102A9GSP#10?
For technical support, including R5F102A9GSP#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A9GSP#10 requirements.
6.How does Aetrix verify that R5F102A9GSP#10 is sourced from the original manufacturer or authorized distributors?
All R5F102A9GSP#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 R5F102A9GSP#10 meets industry standards.
7.What is the process for return or replacement of R5F102A9GSP#10?
All R5F102A9GSP#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A9GSP#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 R5F102A9GSP#10 part is unused and in its original packaging.
Return procedure for R5F102A9GSP#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A9GSP#10 Tags
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