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Renesas R5F102A9GSP#70
- Part No.:
- R5F102A9GSP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A9GSP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 12K
- Quantity:
- Payment:
- Shipping:
Inventory:1,726
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Product details
Overview
R5F102A9GSP#70 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, 8-channel 10-bit ADC, 8-channel TAU timer, and dual UART/CSI/I²C serial interfaces - enabling compact motor control, sensor node, and smart appliance designs.
For engineers reviewing the R5F102A9GSP#70 datasheet, R5F102A9GSP#70 pinout, R5F102A9GSP#70 application, or R5F102A9GSP#70 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The R5F102A9GSP#70 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 31 DMIPS @ 24 MHz. Its power management includes HALT, STOP, and SNOOZE modes achieving 63 μA/MHz active current draw, supported by on-chip 15 kHz low-speed oscillator and ±1.0% accurate high-speed on-chip oscillator (1–24 MHz).
It features CRC calculation hardware, RAM/SFR guard, and self-programming capability with flash shield window - all enabled in its G-grade industrial variant. Peripheral I/O redirection (PIOR) allows dynamic remapping of UART0, CSI00, IIC00, and timer outputs across multiple pins including P10–P17 and P30–P31.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 31 DMIPS @ 24 MHz - enables deterministic real-time control without external cache or MMU. |
| Memory | 16 KB code flash (1 KB blocks), 2 KB data flash (1M rewrite cycles), 2 KB RAM - supports field firmware updates and parameter storage without external EEPROM. |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference and temperature sensor - suitable for direct analog sensing in HVAC and industrial monitoring. |
| Timers | 8-channel 16-bit TAU with PWM output capability, 12-bit interval timer, and window watchdog - provides precise motor phase timing and fail-safe reset behavior. |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C (IIC), plus IICA0 channel - enables concurrent communication with sensors, displays, and host controllers. |
| Operating Range | VDD = 1.8–5.5 V; TA = –40°C to +105°C (G-grade) - certified for under-hood automotive modules and factory-floor PLC peripherals. |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE (low-power background data flash write) - extends battery life in portable industrial tools. |
Pinout & Package
LSSOP-30 package (7.62 mm × 4.4 mm, 0.65 mm pitch), lead-free, RoHS-compliant, with exposed thermal pad connected to VSS per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10 | SCK00/SCL00/(TI07/TO07) | Primary SPI clock or I²C clock; remappable to timer input/output - enables shared bus routing with configurable timing capture. |
| P11 | SI00/RxD0/TOOLRxD/SDA00 | UART0 receive or I²C data line; also supports debug interface - simplifies bring-up with single-wire tool connection. |
| P12 | SO00/TxD0/TOOLTxD/(TI05/TO05) | UART0 transmit or SPI data out; remappable to timer channel - allows flexible peripheral sharing without PCB redesign. |
| P13 | TxD2/SO20/(SDAA0)/(TI04/TO04) | Secondary UART or SPI output; supports IICA0 data line - enables dual-bus isolation for safety-critical comms. |
| P14 | RxD2/SI20/SDA20/(SCLA0)/(TI03/TO03) | Secondary UART receive or I²C data; also maps to timer I/O - supports redundant sensor interface with hardware timing sync. |
| P15 | PCLBUZ1/SCK20/SCL20 | Buzzer clock output or secondary SPI/I²C clock - eliminates need for external oscillator in audio feedback subsystems. |
| P20 | ANI0/AVREFP | Analog input channel 0 with positive reference voltage - used for ratiometric sensor measurement with internal reference stability. |
| P21 | ANI1/AVREFM | Analog input channel 1 with negative reference - enables differential ADC measurements without external op-amps. |
| P30 | INTP3/SCK11/SCL11 | Interrupt input or secondary SPI/I²C clock - allows wake-on-event from external sensors while in STOP mode. |
| P50 | INTP1/SI11/SDA11 | Interrupt-capable serial data input - supports low-latency sensor polling with hardware-triggered ISR entry. |
| REGC | Regulator capacitance | Must connect 0.47–1 µF capacitor to VSS - stabilizes internal voltage regulator for reliable ADC and flash operation. |
| RESET | Active-low reset input | Accepts 1.8–5.5 V logic; internally pulled up - ensures robust power-on and brown-out recovery without external RC network. |
Key Features
| Feature | Design Value |
|---|---|
| Data flash with BGO | 2 KB data flash supports background operation: CPU executes from code flash while rewriting data flash - enables seamless OTA updates without system freeze. |
| DMA controller | 2-channel DMA transfers between SFR and RAM in 2 clocks per 8/16-bit word - reduces CPU load during ADC sampling or UART streaming. |
| Peripheral I/O redirection | PIOR register enables runtime remapping of UART, CSI, I²C, and timer signals across 12+ pins - increases board layout flexibility and reuse. |
| Hardware CRC & guards | CRC calculation unit + RAM/SFR guard registers detect memory corruption and prevent accidental writes - critical for functional safety compliance (IEC 61508 SIL2). |
| Industrial temperature grade | G-grade qualification (–40°C to +105°C) with guaranteed performance across full VDD range (1.8–5.5 V) - validated for deployment in motor drives and power supplies. |
Applications
| Motor Control Subsystem | Smart Sensor Node |
|---|---|
|
Use Scenario: Closed-loop BLDC motor commutation in HVAC blowers using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, 8-channel ADC sampling of phase currents/voltages, and 8-channel TAU PWM generation with dead-time insertion. Use Value: On-chip 2 KB data flash stores calibration coefficients; SNOOZE mode enables background parameter update during runtime without interrupting motor control loop. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ via I²C sensors and analog gas detectors. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor polling, local data fusion, and UART/Bluetooth LE interface bridging. Use Value: 63 μA/MHz active current and STOP mode (0.52 μA) extend 2xAA battery life beyond 2 years; integrated temperature sensor enables self-compensation. |
| Industrial HMI Panel | Programmable Logic Controller (PLC) I/O Module |
|
Use Scenario: Touch-enabled front panel with LED indicators, buzzer alerts, and RS-485 master interface for machine status display. IC Role / Device Role / Timing Role: Human interface processor handling key scan, buzzer tone generation (PCLBUZ0/1), and UART-to-RS485 translation via GPIO-controlled transceiver enable. Use Value: Dual UART channels allow simultaneous debug port and fieldbus interface; programmable clock outputs drive buzzer at precise frequencies without software overhead. |
Use Scenario: DIN-rail mounted digital I/O expansion module with 8 isolated inputs and 4 relay outputs, communicating via Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Deterministic I/O scheduler with 12-bit interval timer triggering periodic input sampling and output state updates independent of main loop jitter. Use Value: Hardware CRC validates Modbus frame integrity; RAM guard prevents bit-flip-induced output glitches - meeting IEC 61131-2 requirements. |
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 RL78/G12 core, 30-pin LSSOP, A-grade (–40°C to +85°C), identical memory and peripherals but no extended temperature rating. | Not qualified for +105°C ambient; unsuitable for under-hood or enclosed power electronics enclosures. | Select when operating environment stays ≤ +85°C and cost optimization is prioritized over thermal margin. |
| R5F103A9GSP#70 | Omits 2 KB data flash, DMA, CRC, RAM/SFR guard; same pinout and package but reduced peripheral set and oscillator accuracy (±5% vs ±1%). | Lacks background data logging and safety-critical memory protection; lower oscillator stability limits precision timing applications. | Select only if data flash, DMA, and functional safety features are unnecessary and BOM cost reduction outweighs design flexibility loss. |
Compared with R5F102AAASP#V0, the R5F102A9GSP#70 adds guaranteed +105°C operation and industrial-grade oscillator accuracy; compared with R5F103A9GSP#70, it retains essential safety and data persistence features missing in the R5F103 series - making it the only choice for thermally demanding, safety-aware embedded control.
Availability
R5F102A9GSP#70 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and programmable logic controller I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F102A9GSP#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 global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of MCU innovation.
The RL78/G12 product line targets cost-sensitive, ultra-low-power industrial and consumer control applications - emphasizing energy efficiency, functional safety readiness, and rapid development through integrated peripherals and toolchain support.
FAQ
What is the maximum operating frequency and instruction throughput of the R5F102A9GSP#70?
The R5F102A9GSP#70 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. Its minimum instruction execution time is 0.04167 μs at 24 MHz, and the RL78 CPU core supports both high-speed (24 MHz) and ultra-low-speed (1 MHz) operation modes to optimize power versus performance trade-offs in real-time applications.
Does the R5F102A9GSP#70 support background data flash programming during normal operation?
Yes, the R5F102A9GSP#70 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously rewriting data flash - enabling seamless firmware parameter updates or logging without halting real-time tasks such as motor control or sensor acquisition.
What are the key safety-related hardware features built into the R5F102A9GSP#70?
The R5F102A9GSP#70 includes CRC calculation hardware, RAM guard, and SFR guard registers - all confirmed in the RL78/G12 datasheet for R5F102-series devices. These features detect memory corruption and prevent unintended writes to critical registers, supporting functional safety requirements for industrial control applications compliant with IEC 61508.
Can the R5F102A9GSP#70 operate reliably at 1.8 V supply voltage across its full temperature range?
Yes, the R5F102A9GSP#70 is fully specified for operation at VDD = 1.8–5.5 V across its entire industrial temperature range of –40°C to +105°C. Its low-voltage compatibility enables direct integration with Li-ion battery systems and energy-harvesting power supplies without level-shifting circuitry.
How many serial communication interfaces does the R5F102A9GSP#70 provide, and what types are supported?
The R5F102A9GSP#70 provides three independent serial interfaces: one UART channel (UART0), one simplified SPI (CSI00), and one simplified I²C (IIC00), plus an additional IICA0 channel for standard I²C communication. All are accessible via remappable pins using the Peripheral I/O Redirection Register (PIOR), allowing flexible board-level routing.
R5F102A9GSP#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:
- 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#70 FAQ
1.How can I place an order for R5F102A9GSP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A9GSP#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 R5F102A9GSP#70 reliable?
The price and inventory of R5F102A9GSP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A9GSP#70 is usually 5 days.
3.What payment methods are accepted for R5F102A9GSP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A9GSP#70 transactions.
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4.How is shipping managed for R5F102A9GSP#70?
R5F102A9GSP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A9GSP#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 R5F102A9GSP#70?
For technical support, including R5F102A9GSP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A9GSP#70 requirements.
6.How does Aetrix verify that R5F102A9GSP#70 is sourced from the original manufacturer or authorized distributors?
All R5F102A9GSP#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 R5F102A9GSP#70 meets industry standards.
7.What is the process for return or replacement of R5F102A9GSP#70?
All R5F102A9GSP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A9GSP#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 R5F102A9GSP#70 part is unused and in its original packaging.
Return procedure for R5F102A9GSP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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