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Renesas R5F102A8DSP#X0
- Part No.:
- R5F102A8DSP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A8DSP#X0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,764
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Product details
Overview
R5F102A8DSP#X0 from Renesas Electronics is a 30-pin LSSOP packaged 16-bit RL78/G12 microcontroller with 8 KB code flash, 2 KB data flash, and 512 B RAM, operating at 1.8–5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an 8-channel 10-bit A/D converter, UART/CSI/I²C serial interfaces, 8-channel TAU timer, DMA controller, and CRC engine - deployed in battery-powered industrial sensors and low-power HMI control panels.
For engineers reviewing the R5F102A8DSP#X0 datasheet, R5F102A8DSP#X0 pinout, R5F102A8DSP#X0 application, or R5F102A8DSP#X0 equivalent, key selection criteria include its 2 KB on-chip data flash for firmware-over-the-air updates, ±1.0% high-speed on-chip oscillator accuracy over –20 to +85°C, 30-pin LSSOP package with REGC regulator capacitor support, and integrated safety features including RAM/SFR guard and CRC operation.
Technical Context
The R5F102A8DSP#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling minimum instruction execution time of 0.04167 µs at 24 MHz using the high-speed on-chip oscillator. Its clock system supports dual-mode operation (HS/LS) with external crystal (1–20 MHz) and internal oscillators (15 kHz low-speed, 1–24 MHz high-speed).
Peripheral integration includes 8-channel TAU timer with PWM capability, SAU0 supporting UART/CSI/I²C functions across dedicated channels, and a 2-channel DMA controller enabling background data flash rewriting while executing code from program memory - critical for real-time firmware updates without halting application logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| 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 |
| Flash Memory | 8 KB code flash + 2 KB data flash - supports self-programming and background operation (BGO) |
| RAM Size | 512 B - sufficient for real-time sensor data buffering and interrupt stack in compact embedded systems |
| A/D Converter | 10-bit resolution, 8 input channels - includes internal reference (1.45 V) and temperature sensor for calibration-free monitoring |
| Oscillator Accuracy | ±1.0% @ –20 to +85°C - eliminates need for external crystal in cost-sensitive industrial controls |
| Power Consumption | 63 μA/MHz - enables multi-year battery life in wireless sensor nodes operating at sub-1 MHz active duty cycles |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, with exposed die pad not present (unlike HWQFN variants). Requires 0.47–1 µF capacitor between REGC and VSS for voltage regulator stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.8–5.5 V supply rail for core and I/O |
| VSS | Ground | Reference ground for analog/digital domains and REGC capacitor return |
| REGC | Regulator capacitance | Connects to VSS via 0.47–1 µF capacitor to stabilize internal voltage regulator |
| RESET | Reset input | Active-low asynchronous reset; also supports on-chip POR/LVD reset sources |
| P10/SCK00/SCL00 | Serial clock I/O | Configurable as CSI00 clock or I²C00 clock; supports peripheral I/O redirection |
| P11/SI00/RxD0/SDA00 | Serial data input | UART0 receive, CSI00 data in, or I²C00 data line - multiplexed via PIOR register |
| P12/SO00/TxD0/TOOLTxD | Serial data output | UART0 transmit, CSI00 data out, or debug tool TX - function selected by software |
| P20/ANI0/AVREFP | Analog input / reference+ | Primary A/D channel 0 input and positive reference voltage source for ADC |
| P21/ANI1/AVREFM | Analog input / reference− | A/D channel 1 input and negative reference voltage for differential ADC mode |
| X1/X2 | Crystal oscillator inputs | Supports 1–20 MHz external crystal for precise timing-critical applications |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash | 2 KB with 1,000,000 write/erase cycles and background operation (BGO) for concurrent code execution |
| Safety mechanisms | Integrated CRC engine, RAM guard, and SFR guard - meets basic functional safety requirements for industrial control |
| Ultra-low power modes | HALT (63 μA/MHz), STOP (0.52 μA), and SNOOZE (low-power wake-up with peripheral activity) |
| Flexible serial connectivity | UART0, CSI00, and I²C00 on shared pins - reduces PCB routing complexity in space-constrained designs |
| Hardware multiplier/accumulator | 16×16→32-bit signed/unsigned multiply, 32×32→32-bit unsigned, and MAC operations - accelerates motor control and signal processing |
Applications
| Industrial Sensor Node | Smart Appliance Control Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor with OTA firmware update capability. IC Role / Device Role / Timing Role: Main system controller managing A/D sampling, UART-based BLE module communication, and secure data flash writes. Use Value: 2 KB data flash enables field-upgradable calibration tables and firmware patches without external EEPROM. | Use Scenario: Touch-enabled microwave oven UI with real-time cooking profile management. IC Role / Device Role / Timing Role: HMI processor handling capacitive touch scanning, buzzer feedback, and relay driver timing via TAU PWM outputs. Use Value: Integrated 8-channel TAU timer with 7 PWM outputs eliminates need for external timing ICs in multi-relay control. |
| Low-Power Building Automation | Programmable Logic Controller I/O Module |
Use Scenario: Wireless occupancy sensor node interfacing PIR and ambient light sensors. IC Role / Device Role / Timing Role: Low-power system-on-chip executing sensor fusion algorithms and waking only on motion detection. Use Value: 63 μA/MHz active current and STOP mode (0.52 μA) extend coin-cell battery life beyond 5 years. | Use Scenario: DIN-rail mounted digital input module converting 24 V DC field signals to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler and isolation interface controller with deterministic UART timing and CRC-checked packet framing. Use Value: On-chip CRC engine ensures error-free Modbus frame validation without CPU overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7DSP#X0 | 4 KB code flash, 2 KB data flash, 256 B RAM - reduced memory footprint | Suitable for simpler sensor firmware with no OTA update requirement | Select when application code size fits within 4 KB and data logging volume is minimal |
| R5F103A8DSP#X0 | No data flash, no DMA, no CRC, ±5.0% oscillator accuracy - lower-cost variant | Appropriate for cost-sensitive consumer devices where firmware updates occur only via factory programming | Choose when BGO, safety features, and precision timing are not required |
Compared with R5F102A7DSP#X0 and R5F103A8DSP#X0, the R5F102A8DSP#X0 uniquely delivers 8 KB code flash with full 2 KB data flash + BGO, making it the only option among the three supporting secure, background firmware updates in resource-constrained industrial edge nodes.
Availability
R5F102A8DSP#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control panels, building automation systems, and programmable logic controller I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for R5F102A8DSP#X0 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line was designed specifically for ultra-low-power general-purpose embedded applications - balancing performance, energy efficiency, and integrated peripherals for cost-sensitive industrial and consumer control systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F102A8DSP#X0?
The R5F102A8DSP#X0 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS performance. This is confirmed in the RL78/G12 datasheet (R01DS0193EJ0250 Rev.2.50, Page 1) and reflects actual measured integer performance under typical conditions - not theoretical peak throughput. The R5F102A8DSP#X0 maintains this rating across its full 1.8–5.5 V supply range.
Does the R5F102A8DSP#X0 support background data flash rewriting while executing application code?
Yes, the R5F102A8DSP#X0 supports background operation (BGO) for data flash rewriting. As specified in the datasheet (Page 1), instructions can be executed from program memory while simultaneously rewriting the 2 KB data flash memory - enabling seamless firmware updates and parameter storage without application interruption. This feature requires proper configuration of the data flash library and adherence to voltage and timing constraints.
What are the key safety-related peripherals integrated into the R5F102A8DSP#X0?
The R5F102A8DSP#X0 integrates CRC operation, RAM guard, and SFR guard - all documented in Section 1.3.3 of the RL78/G12 datasheet. These features detect memory corruption and unauthorized register access, providing foundational functional safety capabilities for industrial control applications. Unlike the R5F103 series, these safety mechanisms are exclusive to R5F102 products such as the R5F102A8DSP#X0.
How many analog input channels does the R5F102A8DSP#X0 support, and what reference options are available?
The R5F102A8DSP#X0 supports 8 analog input channels (ANI0–ANI3, ANI16–ANI19) as confirmed for 30-pin variants in Table 1-1 and Section 1.7. It provides internal 1.45 V reference voltage and supports differential measurement using AVREFP/AVREFM pins. The A/D converter operates across the full 1.8–5.5 V supply range with 10-bit resolution, and absolute input voltage must remain within –0.3 V to AVREF(+) + 0.3 V per Absolute Maximum Ratings (Page 17).
What packaging and ordering specifications apply to the R5F102A8DSP#X0 part number?
The R5F102A8DSP#X0 uses a 30-pin plastic LSSOP package (7.62 mm, 0.65-mm pitch) with embossed tape packaging (#X0 suffix). Per Figure 1-1 and Table 1-1, "SP" denotes LSSOP, "A" indicates 16 KB flash capacity (though R5F102A8 has 8 KB - "A" here encodes family and pin count), "8" specifies 8 KB code flash, and "DSP" identifies the industrial-grade temperature range (–40 to +85°C). The #X0 suffix confirms embossed tape delivery format.
R5F102A8DSP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- 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:
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F102A8DSP#X0 FAQ
1.How can I place an order for R5F102A8DSP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A8DSP#X0 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 R5F102A8DSP#X0 reliable?
The price and inventory of R5F102A8DSP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A8DSP#X0 is usually 5 days.
3.What payment methods are accepted for R5F102A8DSP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A8DSP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A8DSP#X0?
R5F102A8DSP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A8DSP#X0 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 R5F102A8DSP#X0?
For technical support, including R5F102A8DSP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A8DSP#X0 requirements.
6.How does Aetrix verify that R5F102A8DSP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F102A8DSP#X0 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 R5F102A8DSP#X0 meets industry standards.
7.What is the process for return or replacement of R5F102A8DSP#X0?
All R5F102A8DSP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A8DSP#X0, 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 R5F102A8DSP#X0 part is unused and in its original packaging.
Return procedure for R5F102A8DSP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A8DSP#X0 Tags
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