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Renesas R5F102A8GSP#70
- Part No.:
- R5F102A8GSP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A8GSP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 8K 3
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
R5F102A8GSP#70 from Renesas Electronics is a 30-pin LSSOP packaged 16-bit RL78/G12 microcontroller designed for industrial embedded control at extended temperature (–40°C to +105°C). It integrates 8 KB code flash, 2 KB data flash, 512 B RAM, 8-channel 10-bit ADC, and dual-channel DMA - enabling low-power sensor interface and real-time motor control in battery-powered HVAC actuators and smart metering endpoints.
For engineers reviewing the R5F102A8GSP#70 datasheet, R5F102A8GSP#70 pinout, R5F102A8GSP#70 application, or R5F102A8GSP#70 equivalent, key selection criteria include its G-grade industrial temperature rating, on-chip 2 KB data flash with 1M rewrite cycles, 24 MHz high-accuracy ±1.0% on-chip oscillator, and support for UART/CSI/I²C serial interfaces in a 30-pin LSSOP package.
Technical Context
The R5F102A8GSP#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction execution time (0.04167 µs @ 24 MHz). Its power management includes HALT, STOP, and SNOOZE modes achieving 63 µA/MHz active current draw.
It features a dedicated 15 kHz low-speed on-chip oscillator for watchdog and interval timer operation, plus a high-speed on-chip oscillator selectable from 1–24 MHz with ±1.0% accuracy over –20°C to +85°C. The device supports background operation (BGO) during data flash rewriting while executing code from program memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 8×8-bit register banks ×4 |
| Memory | 8 KB code flash (1 KB block), 2 KB data flash (1M rewrite cycles), 512 B RAM |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V peripherals without level shifters |
| Temperature Range | –40°C to +105°C (G-grade industrial) - qualified for under-hood automotive and factory-floor applications |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference and temperature sensor |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C - sufficient for sensor hub + display + host MCU communication |
| Timers & PWM | 8-channel 16-bit TAU timer, 12-bit interval timer, 1 watchdog timer - supports multi-phase motor timing and pulse generation |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.8–5.5 V supply rail; decoupling required per datasheet layout guidelines |
| VSS | Ground | Digital ground reference; must be connected to system GND plane |
| RESET | Reset input | Active-low reset pin; accepts external pull-up and debounced reset button or supervisor IC |
| P10/SCK00/SCL00 | Port 1 bit 0 / CSI clock / I²C clock | Multi-function pin supporting synchronous serial clock output for CSI or I²C master mode |
| P11/SI00/RxD0/SDA00 | Port 1 bit 1 / CSI data in / UART RX / I²C data | Shared serial data input path - configured via peripheral I/O redirection register (PIOR) |
| P12/SO00/TxD0/TOOLTxD | Port 1 bit 2 / CSI data out / UART TX / debug TX | Configurable as UART transmit, CSI output, or on-chip debugger interface output |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Primary analog input channel; also serves as positive reference voltage source for ADC |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Secondary analog input; doubles as negative reference for differential ADC measurements |
| P40/TOOL0 | Debug interface I/O | Single-wire debug (SWD) bidirectional pin for programming and real-time trace |
| REGC | Voltage regulator capacitor | Must connect 0.47–1 µF capacitor to VSS; critical for internal LDO stability and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 µA/MHz active current enables >5-year battery life in wireless sensor nodes using duty-cycled wake-up |
| Data flash with BGO | 2 KB data flash supports background rewriting - allows firmware updates without interrupting real-time control loops |
| G-grade temperature qualification | –40°C to +105°C operation verified per JEDEC JESD22-A108 - suitable for industrial motor drives and power converters |
| On-chip safety functions | CRC calculation unit, RAM guard, and SFR guard detect memory corruption and prevent unintended register writes |
| Flexible serial connectivity | UART + CSI + simplified I²C on shared pins reduces PCB routing complexity versus discrete transceivers |
Applications
| Smart Thermostat Control | Industrial Motor Actuator |
|---|---|
|
Use Scenario: Embedded controller in residential/commercial HVAC thermostats managing temperature sensing, user interface, and relay-driven valve/motor control. IC Role / Device Role / Timing Role: Main system MCU handling 10-bit ADC sampling of NTC thermistors, driving buzzer outputs via PCLBUZ0, and executing PID loop at 100 Hz using TAU timers. Use Value: Integrated 2 KB data flash stores calibration coefficients and usage logs; G-grade temp rating ensures reliability in attic-mounted units exposed to ambient extremes. |
Use Scenario: Closed-loop position controller for linear actuators in factory automation systems requiring precise stroke control and fault reporting. IC Role / Device Role / Timing Role: Real-time motion controller interfacing with potentiometer feedback (ANI0–ANI3), driving H-bridge gate drivers via PWM outputs (TO00–TO03), and communicating status via UART to PLC. Use Value: Dual-channel DMA offloads ADC-to-memory transfers and UART TX buffering, freeing CPU for servo loop computation at 1 kHz update rate. |
| Energy Meter Data Logger | Wireless Sensor Node Edge Processor |
|
Use Scenario: Sub-metering module in commercial buildings logging voltage/current harmonics and thermal derating data over 10-year deployment. IC Role / Device Role / Timing Role: Low-power data acquisition MCU acquiring 8-channel analog inputs (voltage, current, temperature), timestamping via interval timer, and storing results in data flash. Use Value: 1M-cycle data flash endurance supports daily log writes for >27 years; SNOOZE mode draws <1 µA during idle periods between readings. |
Use Scenario: Battery-powered environmental monitor collecting CO₂, humidity, and occupancy data for BLE gateway forwarding in smart offices. IC Role / Device Role / Timing Role: System-on-chip sensor aggregator running RTOS, managing I²C sensors (SHT45, PMS5003), and initiating BLE connection only upon threshold-triggered interrupts (INTP0–INTP5). Use Value: On-chip 15 kHz oscillator enables ultra-low-power wake-up timer; key interrupt (KR0–KR9) detects button presses without CPU polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7GSP#70 | 4 KB code flash, 256 B RAM, same 2 KB data flash and G-grade temp rating | Suitable for simpler sensor nodes with minimal firmware footprint and no complex math routines | Select when application fits within 4 KB flash and requires identical peripheral set and industrial temp range |
| R5F103A8GSP#70 | No data flash; higher oscillator tolerance (±5.0%); lacks DMA, CRC, RAM/SFR guard | Better suited for cost-sensitive consumer appliances where data logging is handled externally | Choose only if data flash, safety guards, and DMA are unnecessary - not drop-in compatible due to missing features |
Compared with R5F102A8GSP#70, the R5F102A7GSP#70 offers identical industrial qualification and data flash but reduced memory for lean firmware, while the R5F103A8GSP#70 removes critical embedded control features like data flash and safety guards - making it unsuitable for applications requiring local nonvolatile parameter storage or functional safety compliance.
Availability
R5F102A8GSP#70 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, HVAC actuation, and battery-powered sensor node designs requiring stable component supply across long production lifecycles.
Supply support for R5F102A8GSP#70 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 management ICs for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, sensor interfacing, and appliance applications - balancing performance, integration, and energy efficiency.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F102A8GSP#70?
The R5F102A8GSP#70 features a high-speed on-chip oscillator selectable up to 24 MHz with ±1.0% accuracy over –20°C to +85°C ambient, and ±2.0% over the full –40°C to +105°C industrial range. This eliminates need for external crystal in many applications while maintaining timing integrity for UART baud generation and real-time control loops.
Does R5F102A8GSP#70 support background data flash rewriting while executing application code?
Yes, the R5F102A8GSP#70 supports Background Operation (BGO) for its 2 KB data flash memory. During BGO, the CPU executes instructions from code flash while the data flash is being rewritten - enabling seamless firmware updates, calibration storage, or event logging without halting real-time tasks.
What safety features are integrated into R5F102A8GSP#70 for industrial use?
The R5F102A8GSP#70 includes CRC calculation hardware, RAM guard, and SFR guard - all confirmed in the RL78/G12 datasheet for R5F102 products. These features detect memory corruption and prevent accidental writes to protected registers, supporting basic functional safety requirements in industrial control applications.
How many analog input channels does R5F102A8GSP#70 provide, and what is the reference voltage?
The R5F102A8GSP#70 provides 8 analog input channels (ANI0–ANI3, ANI16–ANI19) with 10-bit resolution and an internal 1.45 V reference voltage. It also supports external reference via AVREFP/AVREFM pins, enabling ratiometric measurements with precision sensors.
Is R5F102A8GSP#70 pin-compatible with other RL78/G12 30-pin variants like R5F103A8GSP#70?
No, R5F102A8GSP#70 is not pin-compatible with R5F103A8GSP#70. Although both are 30-pin LSSOP devices, the R5F103 variant lacks data flash, DMA, CRC, and safety guards - and its peripheral pin assignments differ in function mapping. Hardware redesign is required for substitution.
R5F102A8GSP#70 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 768 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:
R5F102A8GSP#70 FAQ
1.How can I place an order for R5F102A8GSP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A8GSP#70 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 R5F102A8GSP#70 reliable?
The price and inventory of R5F102A8GSP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A8GSP#70 is usually 5 days.
3.What payment methods are accepted for R5F102A8GSP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A8GSP#70 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A8GSP#70?
R5F102A8GSP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A8GSP#70 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 R5F102A8GSP#70?
For technical support, including R5F102A8GSP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A8GSP#70 requirements.
6.How does Aetrix verify that R5F102A8GSP#70 is sourced from the original manufacturer or authorized distributors?
All R5F102A8GSP#70 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 R5F102A8GSP#70 meets industry standards.
7.What is the process for return or replacement of R5F102A8GSP#70?
All R5F102A8GSP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A8GSP#70, 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 R5F102A8GSP#70 part is unused and in its original packaging.
Return procedure for R5F102A8GSP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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