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Renesas R5F102A7ASP#10
- Part No.:
- R5F102A7ASP#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A7ASP#10.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,180
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Product details
Overview
R5F102A7ASP#10 from Renesas Electronics is a 30-pin LSSOP packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It integrates 2 KB data flash, 2 KB RAM, and 16 KB code flash, operates from 1.8 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and supports UART, CSI, and I²C serial interfaces for sensor hub and appliance control.
For engineers reviewing the R5F102A7ASP#10 datasheet, R5F102A7ASP#10 pinout, R5F102A7ASP#10 application, or R5F102A7ASP#10 equivalent, this page provides verified technical context, validated pin functions, real-world use cases, and confirmed alternative parts - all aligned with Rev.2.50 of R01DS0193EJ0250 and Renesas' official ordering matrix.
Technical Context
The R5F102A7ASP#10 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It features dual on-chip oscillators: a high-accuracy ±1.0% (–20°C to +85°C) 24 MHz high-speed oscillator and a 15 kHz low-speed oscillator for watchdog and interval timing.
It includes safety-enhancing peripherals exclusive to R5F102 products: CRC calculation unit, RAM guard, SFR guard, and background operation (BGO) for data flash rewriting while executing code from program memory - enabling robust firmware updates without halting real-time operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 16 KB code flash + 2 KB data flash with self-programming and flash shield window |
| RAM | 2 KB on-chip RAM supporting DMA transfers and interrupt nesting |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and battery-powered operation |
| Power Modes | HALT, STOP, and SNOOZE modes achieving 63 μA/MHz active current consumption |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C - all configurable via PIOR register |
| A/D Converter | 8/10-bit resolution, 8-channel SAR ADC with internal 1.45 V reference and temperature sensor |
| Timers | 8-channel 16-bit TAU timer (7 PWM-capable), 12-bit interval timer, and windowed watchdog timer |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with exposed pad not present (unlike HWQFN variants).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P20/ANI0/AVREFP | Analog input / positive reference voltage | Primary A/D reference input; must be decoupled for stable 8/10-bit conversion accuracy |
| P21/ANI1/AVREFM | Analog input / negative reference voltage | Differential reference pair with P20; enables ratiometric sensing and offset calibration |
| P10/SCK00/SCL00 | Serial clock output/input | Shared CSI/I²C clock line; selectable via peripheral I/O redirection register (PIOR) |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive / I²C data | Multi-function pin supporting full-duplex UART, master/slave CSI, and I²C slave mode |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit / debug TX | Hardware UART transmit path; also used for on-chip debug communication during development |
| P13/TxD2/SO20/SDAA0 | UART transmit / CSI output / I²C data alternate | Secondary UART channel or alternate I²C data line - expands interface flexibility without external mux |
| P14/RxD2/SI20/SDA20 | UART receive / CSI input / I²C data alternate | Enables dual UART or dual I²C bus operation when configured via PIOR register |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external debounced pushbutton or supervisor IC |
| VDD / VSS | Power supply / ground | Dual power pins support clean analog/digital separation; REGC requires 0.47–1 µF capacitor to VSS |
| REGC | Voltage regulator capacitance terminal | Connects to VSS via 0.47–1 µF capacitor to stabilize internal LDO for analog/peripheral domains |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables multi-year battery life in portable sensors and remote controls |
| Data flash with BGO | 2 KB data flash supports background rewriting - critical for logging, calibration storage, and OTA updates |
| On-chip safety functions | CRC engine, RAM guard, and SFR guard detect memory corruption and prevent unintended register writes |
| Flexible serial routing | Peripheral I/O redirection register (PIOR) allows dynamic remapping of UART/CSI/I²C to multiple pins |
| Integrated analog subsystem | 8-channel 8/10-bit ADC with internal reference and temperature sensor eliminates need for external references |
| High-accuracy oscillator | ±1.0% high-speed on-chip oscillator (–20°C to +85°C) removes crystal cost and board space for basic timing |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor drive, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor commutation, ADC-based load detection, and buzzer feedback via PCLBUZ0. Use Value: 2 KB data flash stores calibration offsets per load cycle; SNOOZE mode reduces standby power to <1 μA during idle periods. |
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality in factory settings. IC Role / Device Role / Timing Role: Data acquisition hub with 8-channel ADC reading analog sensors, UART logging to LoRa module, and CRC-verified firmware updates. Use Value: Built-in temperature sensor enables on-chip thermal compensation; BGO allows sensor data logging during flash rewrites. |
| Smart Remote Control | Consumer IoT Gateway |
|
Use Scenario: IR/RF universal remote with touch keypad, display driver, and BLE co-processor interface. IC Role / Device Role / Timing Role: Application processor handling key scan, IR carrier generation (via PCLBUZ0), and UART communication with BLE SoC. Use Value: N-ch open-drain I/Os interface directly with 1.8 V touch controller; HALT mode extends coin-cell battery life to >2 years. |
Use Scenario: Wi-Fi-connected home automation hub aggregating Zigbee/Z-Wave sub-devices and local UI. IC Role / Device Role / Timing Role: Bridge controller managing protocol translation, local encryption, and real-time status LED/PWM control. Use Value: Dual UART channels enable simultaneous Zigbee coordinator and BLE debug interface; RAM guard prevents stack overflow-induced crashes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A8ASP#10 | 8 KB code flash, 512 B RAM, same package and peripheral set | Lower memory footprint suits simpler firmware with minimal data logging or UI assets | Select when application code size is <64 KB and data retention requirements are minimal |
| R5F103A7ASP#10 | No data flash, no CRC/RAM/SFR guard, ±5.0% oscillator accuracy, no DMA | Cost-sensitive designs where firmware updates occur only via factory programming | Choose for fixed-function appliances with no field update needs and relaxed timing tolerance |
Compared with R5F102A7ASP#10, R5F102A8ASP#10 reduces flash capacity but retains all safety and BGO features, while R5F103A7ASP#10 omits data flash and hardware safety blocks - making it unsuitable for applications requiring runtime parameter storage or functional safety compliance.
Availability
R5F102A7ASP#10 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart remote controls, and consumer IoT gateways requiring stable component supply across multi-year production cycles.
Supply support for R5F102A7ASP#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and consumer markets.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose embedded applications - emphasizing energy efficiency, integrated analog, and simplified development for appliances, sensors, and human-interface devices.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for R5F102A7ASP#10?
The R5F102A7ASP#10 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS performance. This is measured under HS (high-speed main) mode with VDD ≥ 2.7 V. The minimum instruction execution time is 0.04167 μs, enabling deterministic real-time response in motor control and sensor sampling loops.
Does R5F102A7ASP#10 include data flash memory, and what is its endurance specification?
Yes, the R5F102A7ASP#10 includes 2 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) across the full VDD range of 1.8 V to 5.5 V. It supports background operation (BGO), allowing code execution from program memory while rewriting data flash - essential for secure firmware updates and runtime parameter storage in the R5F102A7ASP#10.
What safety features are implemented in R5F102A7ASP#10 that distinguish it from R5F103 series parts?
The R5F102A7ASP#10 includes CRC calculation unit, RAM guard, and SFR guard - hardware-level safety features absent in the R5F103 series. These protect against memory corruption and unauthorized register access, supporting IEC 60730 Class B compliance for household appliances. These features are confirmed in Section 1.3.3 of R01DS0193EJ0250 and apply specifically to R5F102A7ASP#10.
Can R5F102A7ASP#10 operate from a single 1.8 V supply, and what peripherals remain functional at that voltage?
Yes, the R5F102A7ASP#10 supports full operation from 1.8 V, including the 10-bit A/D converter (with internal 1.45 V reference), 16-bit timers, UART, CSI, and I²C interfaces. The high-speed on-chip oscillator operates down to 1 MHz at 1.8 V, and the low-speed 15 kHz oscillator remains active - ensuring reliable functionality in battery-critical applications using the R5F102A7ASP#10.
What is the function of the REGC pin on R5F102A7ASP#10, and how must it be connected?
The REGC pin on the R5F102A7ASP#10 connects to the internal voltage regulator's stabilization capacitor. It must be connected to VSS via a 0.47 µF to 1 µF ceramic capacitor - as specified in Section 1.4.3 and Figure 1-10 of R01DS0193EJ0250. Failure to install this capacitor risks unstable analog performance, ADC inaccuracies, and potential reset anomalies in the R5F102A7ASP#10.
R5F102A7ASP#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:
- 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 512 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:
R5F102A7ASP#10 FAQ
1.How can I place an order for R5F102A7ASP#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A7ASP#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 R5F102A7ASP#10 reliable?
The price and inventory of R5F102A7ASP#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A7ASP#10 is usually 5 days.
3.What payment methods are accepted for R5F102A7ASP#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A7ASP#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A7ASP#10?
R5F102A7ASP#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A7ASP#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 R5F102A7ASP#10?
For technical support, including R5F102A7ASP#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A7ASP#10 requirements.
6.How does Aetrix verify that R5F102A7ASP#10 is sourced from the original manufacturer or authorized distributors?
All R5F102A7ASP#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 R5F102A7ASP#10 meets industry standards.
7.What is the process for return or replacement of R5F102A7ASP#10?
All R5F102A7ASP#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A7ASP#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 R5F102A7ASP#10 part is unused and in its original packaging.
Return procedure for R5F102A7ASP#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A7ASP#10 Tags
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ATTINY4-TSHR
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