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Renesas R5F102A8ASP#70
- Part No.:
- R5F102A8ASP#70
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A8ASP#70.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 8K 3
- Quantity:
- Payment:
- Shipping:
Inventory:1,096
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Product details
Overview
R5F102A8ASP#70 from Renesas is a 30-pin LSSOP ultra-low-power 16-bit RL78/G12 MCU with 8 KB code flash, 2 KB data flash, and 512 B RAM, operating from 1.8 V to 5.5 V at up to 24 MHz (31 DMIPS), featuring 8-channel 10-bit A/D, UART/CSI/I²C serial interfaces, and CRC hardware - deployed in battery-powered sensor nodes and industrial control panels.
For engineers reviewing the R5F102A8ASP#70 datasheet, R5F102A8ASP#70 pinout, R5F102A8ASP#70 application, or R5F102A8ASP#70 equivalent, key selection criteria include its 2 KB on-chip data flash for firmware-over-the-air updates, 8-channel analog input capability with internal reference, and support for STOP/HALT/SNOOZE low-power modes down to 63 μA/MHz.
Technical Context
The R5F102A8ASP#70 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and dual-oscillator clock system: high-speed on-chip oscillator (1–24 MHz, ±1.0% accuracy at –20 to +85°C) plus external crystal support (1–20 MHz). It integrates a 12-bit interval timer, window watchdog, and on-chip voltage detector with 12-level LVD interrupt/reset selection.
Its peripheral set includes TAU0 timer array (8 channels), SAU0 serial array (4-channel UART/CSI/I²C), 2-channel DMA controller, and hardware CRC generator - all accessible via configurable I/O redirection register (PIOR), enabling flexible pin assignment without PCB redesign.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 31 DMIPS @ 24 MHz |
| Memory | 8 KB code flash (1 KB block size), 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 logic and battery operation down to single-cell Li-ion |
| A/D Converter | 10-bit resolution, 8 input channels, internal 1.45 V reference, temperature sensor included |
| Low-Power Modes | Halt (63 μA/MHz), Stop (0.52 μA typical), SNOOZE (fast wake-up with background data flash write) |
| Serial Interfaces | 1 UART, 1 simplified SPI (CSI), 1 simplified I²C - all configurable via PIOR register |
| Package & Pin Count | LSSOP-30 (7.62 mm × 4.4 mm, 0.65 mm pitch), 26 total I/O pins including 9 N-ch open-drain (VDD-tolerant) |
Pinout & Package
Package: 30-pin plastic LSSOP (7.62 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant, tape-and-reel (#70 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial Clock Input/Output | Configurable as CSI00 clock or I²C00 clock; supports master/slave mode with programmable slew rate |
| P11/SI00/RxD0/SDA00 | Serial Data Input / UART RX / I²C Data | Multi-function pin for SPI slave-in, UART receive, or I²C bidirectional data - selected via PIOR |
| P12/SO00/TxD0/TOOLTxD | Serial Data Output / UART TX / Tool Interface | Drives UART transmit, SPI slave-out, or debug tool output; TTL-compatible with 40 mA sink capability |
| P20/ANI0/AVREFP | Analog Input / Positive Reference | Primary analog input channel with dedicated AVREFP supply pin - enables ratiometric measurement against internal 1.45 V reference |
| P21/ANI1/AVREFM | Analog Input / Negative Reference | Second analog input with AVREFM connection - forms differential pair with P20 for noise-immune sensing |
| RESET | Active-Low Reset Input | Asynchronous reset pin with internal pull-up; accepts 1.8–5.5 V logic levels; triggers POR/LVD reset sequences |
| REGC | Voltage Regulator Capacitor | Connects to VSS via 0.47–1 µF capacitor - stabilizes internal regulator for analog/ADC stability |
| X1/X2 | Ceramic Resonator/Crystal Terminals | Supports 1–20 MHz external oscillators; X1 is input, X2 is output - enables precise timing for UART baud generation |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Data Flash | 2 KB with background operation (BGO) - allows code execution during flash writes, critical for OTA firmware updates |
| Hardware CRC Generator | Dedicated CRC-16/32 engine - accelerates checksum validation for communication frames and firmware integrity checks |
| Peripheral I/O Redirection (PIOR) | Register-based pin remapping - enables dynamic reassignment of UART/CSI/I²C functions to alternate pins without hardware change |
| Low-Voltage Detection (LVD) | 12 selectable threshold levels (1.88–4.06 V) with interrupt+reset options - prevents erratic behavior during brownout conditions |
| Temperature Sensor | Integrated silicon diode sensor with calibration data in ROM - delivers ±2°C accuracy across –40 to +85°C for thermal monitoring |
Applications
| Smart Home Sensor Hub | Industrial Motor Control Panel |
|---|---|
Use Scenario: Central node aggregating temperature, humidity, and occupancy data from multiple wireless sensors before forwarding via UART-to-LoRaWAN bridge. IC Role / Device Role / Timing Role: Main controller executing sensor fusion algorithms, managing low-power sleep/wake cycles, and driving UART/CSI peripherals for local sensor interfacing. Use Value: 2 KB data flash stores calibrated sensor offsets and OTA update staging area; STOP mode draws only 0.52 μA between 10-second polling intervals. |
Use Scenario: Embedded controller in HVAC drive panel monitoring motor current, heatsink temperature, and fault status while communicating with PLC via RS-485 (UART). IC Role / Device Role / Timing Role: Real-time peripheral manager handling ADC sampling, PWM timing, and UART protocol framing with deterministic interrupt latency. Use Value: Hardware CRC validates Modbus RTU packets; 8-channel ADC simultaneously samples current shunt, thermistor, and supply rails without CPU overhead. |
| Portable Medical Monitor | Energy Metering Module |
Use Scenario: Battery-powered pulse oximeter acquiring analog photodiode signals, computing SpO₂, and displaying results on segmented LCD via PCLBUZ0 clock output. IC Role / Device Role / Timing Role: Signal acquisition processor with synchronized 10-bit ADC sampling, digital filtering, and buzzer/LCD timing generation. Use Value: Internal 1.45 V reference ensures stable ADC LSB across 1.8–5.5 V battery discharge; SNOOZE mode permits background data flash logging during active measurement. |
Use Scenario: DIN-rail mounted kWh meter reading voltage/current transformers, calculating RMS values, and storing tariff data in nonvolatile memory. IC Role / Device Role / Timing Role: Energy computation engine performing real-time multiplication-accumulation on ADC samples and managing secure data flash storage. Use Value: 16×16-bit MAC unit computes power factor and harmonics; 2 KB data flash retains 30 days of tamper-proof consumption logs with 1M rewrite endurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102A7ASP#70 | 4 KB code flash, 256 B RAM, same package/peripherals | Lower memory footprint suits simpler sensor firmware without OTA or complex UI | Select when application fits within 4 KB code and requires minimal RAM; identical pinout and power profile |
| R5F103A8ASP#70 | No data flash, no CRC, no DMA, ±5.0% oscillator accuracy, reduced serial channels | Cost-sensitive consumer devices where firmware updates and data logging are not required | Choose for price-driven designs lacking safety-critical data retention or communication integrity needs |
Compared with R5F102A7ASP#70, the R5F102A8ASP#70 provides double code flash and 2× RAM for enhanced feature sets; versus R5F103A8ASP#70, it adds 2 KB data flash, hardware CRC, and tighter oscillator tolerance - essential for field-upgradable industrial firmware.
Availability
R5F102A8ASP#70 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial motor control panels, and portable medical monitors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F102A8ASP#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line targets cost-sensitive, ultra-low-power embedded applications - delivering optimized performance-per-milliwatt for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F102A8ASP#70?
The R5F102A8ASP#70 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS performance. This rating is measured under HS (high-speed main) mode with VDD = 2.7–5.5 V and reflects integer instruction throughput per second - critical for real-time control loops in motor drives and sensor fusion applications where R5F102A8ASP#70 is commonly deployed.
Does the R5F102A8ASP#70 include on-chip data flash memory, and what is its endurance specification?
Yes, the R5F102A8ASP#70 integrates 2 KB of on-chip data flash memory with guaranteed endurance of 1,000,000 write/erase cycles (typical) across the full VDD range of 1.8–5.5 V. This memory supports background operation (BGO), allowing program execution from code flash while rewriting data flash - a key capability for firmware updates and parameter logging in field-deployed R5F102A8ASP#70 systems.
What low-power modes are supported by the R5F102A8ASP#70, and what are their typical current consumptions?
The R5F102A8ASP#70 supports HALT (63 μA/MHz), STOP (0.52 μA typical), and SNOOZE modes. STOP mode disables the CPU and most peripherals while retaining RAM and register contents; SNOOZE enables selective peripheral operation (e.g., ADC conversion or data flash write) during low-power sleep. These modes make R5F102A8ASP#70 suitable for battery life extension in remote sensors and wearables.
How many analog input channels does the R5F102A8ASP#70 provide, and what reference voltage options are available?
The R5F102A8ASP#70 features 8 analog input channels (ANI0–ANI3, ANI16–ANI19) with 10-bit resolution and supports both external reference (via AVREFP/AVREFM pins) and internal 1.45 V reference. The internal reference enables ratiometric measurements independent of supply voltage fluctuations - a design advantage for precision sensing in R5F102A8ASP#70-based instrumentation.
Is the R5F102A8ASP#70 pin-compatible with other RL78/G12 variants in the same LSSOP-30 package?
Yes, all RL78/G12 30-pin LSSOP variants - including R5F102A7ASP#70, R5F102A9ASP#70, and R5F102AAASP#70 - share identical pinouts and mechanical footprint. Functional differences (e.g., flash size, RAM, oscillator accuracy) do not affect physical compatibility, enabling drop-in replacement during design iteration or cost optimization while maintaining R5F102A8ASP#70's PCB layout.
R5F102A8ASP#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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F102A8ASP#70 FAQ
1.How can I place an order for R5F102A8ASP#70 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A8ASP#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 R5F102A8ASP#70 reliable?
The price and inventory of R5F102A8ASP#70 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A8ASP#70 is usually 5 days.
3.What payment methods are accepted for R5F102A8ASP#70?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A8ASP#70 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A8ASP#70?
R5F102A8ASP#70 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A8ASP#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 R5F102A8ASP#70?
For technical support, including R5F102A8ASP#70 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A8ASP#70 requirements.
6.How does Aetrix verify that R5F102A8ASP#70 is sourced from the original manufacturer or authorized distributors?
All R5F102A8ASP#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 R5F102A8ASP#70 meets industry standards.
7.What is the process for return or replacement of R5F102A8ASP#70?
All R5F102A8ASP#70 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A8ASP#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 R5F102A8ASP#70 part is unused and in its original packaging.
Return procedure for R5F102A8ASP#70:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F102A8ASP#70 Tags
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