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Renesas R5F102A8ASP#30
- Part No.:
- R5F102A8ASP#30
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A8ASP#30.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,052
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Product details
Overview
R5F102A8ASP#30 from Renesas Electronics is a 30-pin LSSOP ultra-low-power 16-bit RL78/G12 MCU designed for embedded control in battery-powered and energy-sensitive applications. It integrates 8 KB code flash, 2 KB data flash, 512 B RAM, 8-channel 10-bit A/D converter, 8-channel TAU timer, UART/CSI/I²C serial interfaces, and operates from 1.8 V to 5.5 V with 63 μA/MHz active current - enabling use in smart sensors and portable industrial controllers.
For engineers reviewing the R5F102A8ASP#30 datasheet, R5F102A8ASP#30 pinout, R5F102A8ASP#30 application, or R5F102A8ASP#30 equivalent, key selection criteria include its 30-pin LSSOP package, consumer-grade temperature range (–40°C to +85°C), on-chip data flash for parameter storage, DMA support for efficient peripheral-to-memory transfers, and hardware CRC for firmware integrity verification.
Technical Context
The R5F102A8ASP#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting minimum instruction execution time of 0.04167 µs at 24 MHz using the high-accuracy ±1.0% on-chip oscillator. Its memory subsystem includes 8 KB code flash (1 KB block size) with self-programming and flash shield window, plus 2 KB data flash with background operation (BGO) and 1M rewrite cycles.
Peripherals are organized around dual SAU modules (SAU0 with 4 channels, SAU1 with 2), UART0/UART1/UART2, CSI00/CSI11/CSI20, IICA0/IIC00/IIC11/IIC20, 8-channel 16-bit TAU timer with PWM capability, 12-bit interval timer, watchdog timer, and 8-channel 10-bit A/D converter with internal reference (1.45 V) and temperature sensor - all configurable via PIOR register for flexible pin assignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space, 8×8-bit register banks |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and battery operation down to single-cell Li-ion |
| Flash Memory | 8 KB code flash + 2 KB data flash - supports firmware updates and nonvolatile parameter storage without external EEPROM |
| RAM Size | 512 B - sufficient for real-time control stacks and small buffers in sensor node or HMI applications |
| A/D Converter | 8-channel 10-bit ADC with internal 1.45 V reference and temperature sensor - eliminates need for external references in thermal monitoring |
| Timer Resources | 8-channel 16-bit TAU timer with PWM output, 12-bit interval timer, and windowed watchdog - suitable for motor control and safety-critical timing |
| Serial Interfaces | UART ×3, CSI ×3, I²C ×4 (IICA0 + IIC00/IIC11/IIC20) - enables concurrent communication with multiple sensors, displays, and host systems |
| Power Modes | HALT, STOP, SNOOZE - achieves 63 μA/MHz active current and sub-μA standby, extending battery life in always-on devices |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with exposed pad grounding recommended per HWQFN variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / positive reference | Primary analog reference input; connects to external AVDD or precision reference for A/D accuracy |
| P21/ANI1/AVREFM | Analog input / negative reference | Differential analog reference pair with P20; enables ratiometric measurements and noise rejection |
| P10/SCK00/SCL00 | Serial clock I/O | Shared SPI clock or I²C clock line; configurable via PIOR for flexible peripheral routing |
| P11/SI00/RxD0/SDA00 | Serial data input / UART RX / I²C data | Multi-function pin supporting master/slave SPI, UART receive, or I²C bidirectional data |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART TX / debug TX | Supports full-duplex UART, SPI slave output, or on-chip debug communication |
| P13/TxD2/SO20/SDAA0 | UART2 TX / SPI2 output / I²C data alias | Enables secondary UART link or expanded I²C bus via SDAA0 aliasing to P61 |
| P14/RxD2/SI20/SDA20 | UART2 RX / SPI2 input / I²C data alias | Complements P13 for independent UART2 channel or additional I²C slave interface |
| P31/TI03/TO03/INTP4/PCLBUZ0 | Timer input/output / interrupt / buzzer clock | Hardware timer capture/compare with interrupt capability and programmable buzzer output |
| P60/SCLA0 | I²C clock line | Dedicated I²C clock pin for primary I²C bus (IICA0), tolerant to 6 V for mixed-voltage interfacing |
| P61/SDAA0 | I²C data line | Dedicated I²C data pin for primary I²C bus (IICA0), 6 V-tolerant for robust level-shifting |
| RESET | Active-low reset input | Asynchronous reset pin accepting external pushbutton or supervisor IC signal |
| REGC | Voltage regulator capacitor terminal | Must connect to VSS via 0.47–1 µF capacitor to stabilize internal LDO for analog/flash operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables multi-year battery life in wireless sensor nodes and portable medical devices |
| On-chip data flash (2 KB) | Supports 1 million rewrites at full VDD range (1.8–5.5 V) with background operation - preserves real-time control during parameter updates |
| Hardware CRC module | Accelerates firmware image validation and memory integrity checks without CPU overhead in safety-critical boot sequences |
| DMA controller (2 channels) | Enables zero-CPU-overhead transfers between UART/ADC and RAM - critical for deterministic data logging in industrial gateways |
| Multi-voltage I/O | N-ch open-drain pins tolerate 6 V; CMOS inputs accept 1.8/2.5/3.3 V logic - simplifies interface to legacy and mixed-voltage peripherals |
| Peripheral I/O redirection (PIOR) | Allows dynamic remapping of UART/CSI/I²C functions across multiple pins - increases PCB layout flexibility and reduces redesign risk |
Applications
| Smart Home Sensor Node | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor transmitting data via UART to BLE module. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, data formatting, low-power scheduling, and UART communication. Use Value: 63 μA/MHz active current and STOP mode sub-μA sleep extend coin-cell life beyond 5 years; integrated 10-bit ADC eliminates external signal conditioning. |
Use Scenario: Local operator interface for PLC-controlled HVAC system with LCD, buttons, and status LEDs. IC Role / Device Role / Timing Role: Embedded UI processor handling button debouncing, LED PWM dimming, LCD refresh, and serial command parsing. Use Value: 8-channel TAU timer provides independent PWM outputs for LED brightness control; 8 KB flash stores localized language strings and UI assets. |
| Portable Medical Monitor | Energy Meter Communication Module |
Use Scenario: Handheld pulse oximeter with analog front-end, OLED display, and USB-UART bridge. IC Role / Device Role / Timing Role: Signal acquisition controller performing ADC sampling, SpO₂ calculation, display update, and USB CDC emulation. Use Value: On-chip 1.45 V reference and temperature sensor enable calibrated optical measurements; data flash stores calibration coefficients across device lifetime. |
Use Scenario: Modbus RTU-to-M-Bus gateway in utility meter reading infrastructure. IC Role / Device Role / Timing Role: Protocol translator managing RS-485 UART framing, M-Bus physical layer timing, and EEPROM-backed configuration storage. Use Value: Hardware CRC ensures firmware integrity during remote OTA updates; 2 KB data flash retains meter ID, tariff tables, and event logs without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7ASP#30 | 4 KB code flash, 256 B RAM, same 30-pin LSSOP package and peripheral set | Suitable for simpler control tasks with smaller firmware footprint and reduced RAM needs | Select when firmware size < 4 KB and no data logging buffer required |
| R5F103A8ASP#30 | No data flash, ±5.0% oscillator accuracy, no DMA or CRC, but identical pinout and core | Lower-cost option for basic UART/ADC control where parameter persistence and high-accuracy timing are not required | Choose for cost-sensitive consumer products with static configuration and relaxed timing specs |
Compared with R5F102A7ASP#30, the R5F102A8ASP#30 doubles code flash and RAM for enhanced feature sets; versus R5F103A8ASP#30, it adds critical data flash, DMA, and CRC for field-upgradable, safety-aware designs - justifying premium in industrial and medical applications.
Availability
R5F102A8ASP#30 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and guaranteed traceability for ISO 13485 and IEC 61508 compliance programs.
Supply support for R5F102A8ASP#30 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 delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated embedded control applications - balancing performance, integration, and energy efficiency for next-generation smart devices.
FAQ
What is the maximum operating frequency and corresponding instruction speed of the R5F102A8ASP#30?
The R5F102A8ASP#30 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, achieving a minimum instruction execution time of 0.04167 µs. When using the external crystal oscillator (X1), the maximum system clock is 20 MHz (VDD ≥ 2.7 V) or 8 MHz (VDD ≥ 1.8 V), yielding 0.05 µs minimum instruction time. These values are confirmed in the RL78/G12 datasheet Rev.2.50 Section 1.1 and Table 1-1.
Does the R5F102A8ASP#30 include on-chip data flash memory, and what are its endurance specifications?
Yes, the R5F102A8ASP#30 includes 2 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) across the full 1.8–5.5 V VDD range. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash - a capability confirmed in Section 1.1 "Features" and Section 1.3.1 of the R01DS0193EJ0250 datasheet.
What are the key differences between the R5F102A8ASP#30 and the R5F103A8ASP#30?
The R5F102A8ASP#30 includes 2 KB data flash, ±1.0% high-speed oscillator accuracy, DMA controller (2 channels), and hardware CRC - features absent in the R5F103A8ASP#30. Both share identical 30-pin LSSOP packaging, 8 KB code flash, and peripheral count, but R5F103A8ASP#30 targets lower-cost applications where data persistence and high-precision timing are unnecessary.
How many analog input channels does the R5F102A8ASP#30 support, and what reference options are available?
The R5F102A8ASP#30 supports 8 analog input channels (ANI0–ANI3, ANI16–ANI19) with selectable 10-bit or 8-bit resolution. Reference options include internal 1.45 V bandgap reference, external differential reference (AVREFP/AVREFM pins), or VDD as reference - all operable across the 1.8–5.5 V supply range per Section 1.1 and Figure 1-10 of the datasheet.
What power-saving modes are supported by the R5F102A8ASP#30, and what are their typical current draws?
The R5F102A8ASP#30 supports HALT, STOP, and SNOOZE modes. Active-mode current is 63 μA/MHz at 24 MHz; HALT mode draws ~1.2 μA; STOP mode consumes less than 0.5 μA (typical); SNOOZE mode maintains selected peripherals (e.g., UART, RTC) while CPU sleeps - values specified in Section 1.1 "Ultra-low power consumption technology" and electrical characteristics tables.
R5F102A8ASP#30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
R5F102A8ASP#30 FAQ
1.How can I place an order for R5F102A8ASP#30 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A8ASP#30 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 R5F102A8ASP#30 reliable?
The price and inventory of R5F102A8ASP#30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A8ASP#30 is usually 5 days.
3.What payment methods are accepted for R5F102A8ASP#30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A8ASP#30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A8ASP#30?
R5F102A8ASP#30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A8ASP#30 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 R5F102A8ASP#30?
For technical support, including R5F102A8ASP#30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A8ASP#30 requirements.
6.How does Aetrix verify that R5F102A8ASP#30 is sourced from the original manufacturer or authorized distributors?
All R5F102A8ASP#30 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 R5F102A8ASP#30 meets industry standards.
7.What is the process for return or replacement of R5F102A8ASP#30?
All R5F102A8ASP#30 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A8ASP#30, 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 R5F102A8ASP#30 part is unused and in its original packaging.
Return procedure for R5F102A8ASP#30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A8ASP#30 Tags
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