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Renesas R5F102A7ASP#V0
- Part No.:
- R5F102A7ASP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 30-LSSOP (0.240", 6.10mm Width)
- Datasheet:
-
R5F102A7ASP#V0.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 30LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,453
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Product details
Overview
R5F102A7ASP#V0 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, 16 KB code flash, and a 24 MHz high-accuracy ±1.0% on-chip oscillator. Its 8-channel 16-bit TAU timer, 8-channel 10-bit ADC, and dual UART/CSI/I²C interfaces support sensor interfacing and serial communication in battery-powered home appliances.
For engineers reviewing the R5F102A7ASP#V0 datasheet, R5F102A7ASP#V0 pinout, R5F102A7ASP#V0 application, or R5F102A7ASP#V0 equivalent, key selection considerations include its 2 KB data flash with background operation (BGO), 2-channel DMA for low-CPU-overhead peripheral transfers, CRC hardware acceleration, and safety features including RAM/SFR guard - all within a 1.8–5.5 V supply range and true low-power HALT/STOP/SNOOZE modes.
Technical Context
The R5F102A7ASP#V0 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting minimum instruction execution at 0.04167 µs (24 MHz on-chip oscillator) and full 1 MB address space. It operates in HS (high-speed main) mode up to 20 MHz with external crystal or 24 MHz with internal oscillator, and includes dedicated low-speed 15 kHz on-chip oscillator for watchdog and interval timing.
Its peripheral set is defined for 30-pin configuration: 26 I/O pins (including 9 N-ch open-drain I/O with VDD tolerance), 8-channel TAU0 timer with PWM capability, 8-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, and three independent serial subsystems - UART0, CSI00, and IIC00 - each 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 |
| Memory | 16 KB code flash (1 KB block size), 2 KB data flash (1M rewrite cycles, BGO supported), 2 KB RAM |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V logic without level shifters |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE (low-latency wake-up with peripheral operation) |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference, integrated temperature sensor |
| Oscillator Accuracy | ±1.0% over –20°C to +85°C with 24 MHz high-speed on-chip oscillator |
| Serial Interfaces | UART0 (1 ch), CSI00 (1 ch), IIC00 (1 ch) - all independently assignable to multiple pins via PIOR |
Pinout & Package
LSSOP-30 package (7.62 mm × 4.4 mm, 0.65 mm pitch), lead-free, RoHS-compliant, tray packaging (#V0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | Serial clock I/O | Configurable as CSI00 clock or IIC00 clock; supports master/slave operation with programmable polarity/phase |
| P11/SI00/RxD0/SDA00 | Serial data input / UART receive / I²C data | Multi-function pin enabling UART0 RX, CSI00 SI, or IIC00 SDA - selected via peripheral I/O redirection register (PIOR) |
| P12/SO00/TxD0/TOOLTxD | Serial data output / UART transmit / debug TX | Supports UART0 TX, CSI00 SO, or on-chip debug tool communication; enables firmware updates without external programmer |
| P13/TxD2/SO20/SDAA0 | Secondary UART TX / CSI20 output / I²C data alias | Provides alternate UART2 TX path or CSI20 SO; SDAA0 alias allows I²C data routing to P61 when P13 is reassigned |
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Dual-role pin: primary ADC channel 0 input or AVREF+ source; enables ratiometric sensing when used as reference |
| P21/ANI1/AVREFM | Analog input / ADC reference negative | Supports differential ADC measurements (ANI0–ANI1) or sets AVREF– for precise offset calibration |
| RESET | Active-low reset input | Accepts external reset pulse; internally tied to on-chip POR and LVD circuits for autonomous power-fail recovery |
| REGC | Voltage regulator capacitor terminal | Must connect 0.47–1 µF capacitor to VSS; stabilizes internal LDO output for analog/ADC circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC accelerator | Enables real-time checksum validation of firmware updates or sensor data streams without CPU overhead |
| Data flash BGO (Background Operation) | Permits concurrent code execution from flash while rewriting 2 KB data flash - critical for logging or parameter storage |
| RAM and SFR guard | Detects unintended writes to protected memory regions, preventing corruption during interrupt service or pointer errors |
| Programmable clock/buzzer output (PCLBUZ0/PCLBUZ1) | Generates precise 2.44 kHz–10 MHz clocks or audible tones directly from timer hardware - no GPIO toggling required |
| Key interrupt (KR0–KR9) | Scans up to 10 keypad lines with automatic wake-from-STOP detection and de-bounce filtering in hardware |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in smart thermostat managing temperature/humidity sensing, display, and HVAC relay control. IC Role / Device Role / Timing Role: Primary system controller executing closed-loop PID algorithms, driving 7-segment display via PCLBUZ0 clock, and polling ADC channels every 100 ms. Use Value: Ultra-low-power STOP mode (<0.52 µA) extends battery life >5 years; 2 KB data flash stores calibration offsets and usage logs across power cycles. |
Use Scenario: Wireless environmental monitor with analog sensors (CO₂, VOC) and UART-connected LoRa module. IC Role / Device Role / Timing Role: Signal conditioner and protocol bridge: digitizes analog inputs, applies CRC-16 to packets, and formats UART frames for RF transmission. Use Value: Hardware CRC and 2-channel DMA offload CPU during sensor read + packet prep, reducing active time by 35% versus software-only implementation. |
| Consumer IoT Gateway | White Goods Motor Control |
Use Scenario: Hub device aggregating BLE sensors and forwarding data via UART to Wi-Fi SoC. IC Role / Device Role / Timing Role: Peripheral coordinator: manages multiple UART/CSI peripherals, handles buffer management, and enforces command parsing with illegal-instruction reset safety. Use Value: Vectored interrupt support (26 sources) ensures deterministic response to sensor events; RAM guard prevents stack overflow from corrupting control variables. |
Use Scenario: Washing machine main board controlling motor driver ICs, water valves, and user interface. IC Role / Device Role / Timing Role: Real-time motion controller: generates 8-channel PWM via TAU0, reads hall-effect feedback via ADC, and executes safety checks using watchdog and voltage detector. Use Value: On-chip LVD with 12-level threshold selection enables adaptive brown-out protection; STOP-mode wake-on-key-interrupt reduces standby consumption below 1 µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F103A7ASP#V0 | No data flash (0 KB), no DMA, no CRC, no RAM/SFR guard; ±5.0% oscillator accuracy | Suitable for cost-sensitive, non-data-logging applications where BGO and safety features are unnecessary | Select only if data retention, peripheral offload, or functional safety are not required |
| R5F102AAASP#V0 | Same package and core, but 16 KB code flash (vs. 16 KB), 2 KB RAM (vs. 2 KB), identical peripherals and safety features | Drop-in replacement with larger code capacity for complex firmware; same pinout and timing behavior | Choose when additional flash headroom is needed for field-upgradable features or bootloader space |
Compared with R5F103A7ASP#V0, the R5F102A7ASP#V0 delivers guaranteed data integrity via hardware CRC and safe field updates via BGO-enabled data flash; compared with R5F102AAASP#V0, it trades flash capacity for lower unit cost while retaining identical safety, timing, and peripheral functionality.
Availability
R5F102A7ASP#V0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and consumer IoT gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for R5F102A7ASP#V0 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line targets cost-optimized, ultra-low-power general-purpose embedded control - emphasizing energy efficiency, integrated safety features, and simplified development for consumer and industrial equipment.
FAQ
What is the maximum operating frequency of the R5F102A7ASP#V0?
The R5F102A7ASP#V0 supports a maximum system clock of 24 MHz using its high-speed on-chip oscillator, or 20 MHz when driven by an external crystal (X1) at 1.8–5.5 V supply. Instruction execution achieves 31 DMIPS at 24 MHz, with minimum cycle time of 0.04167 µs. External clock input (EXCLK) is also supported up to 20 MHz.
Does the R5F102A7ASP#V0 include data flash memory, and what are its key characteristics?
Yes, the R5F102A7ASP#V0 includes 2 KB of data flash memory with background operation (BGO) support, allowing program execution from code flash while rewriting data flash. It guarantees 1,000,000 write/erase cycles at VDD = 1.8–5.5 V and supports self-programming with flash shield window protection against unauthorized access.
How many analog-to-digital converter (ADC) channels does the R5F102A7ASP#V0 support, and what is its resolution?
The R5F102A7ASP#V0 integrates an 8-channel, 10-bit successive-approximation ADC with selectable reference voltages (internal 1.45 V or AVREFP/AVREFM differential). It includes a built-in temperature sensor and supports simultaneous sampling across multiple channels using hardware triggers from timers or peripherals.
What safety and reliability features are implemented in the R5F102A7ASP#V0?
The R5F102A7ASP#V0 includes hardware CRC calculation, RAM guard, and SFR guard to detect and prevent memory corruption. It also integrates a window watchdog timer, 12-level voltage detector (LVD) with interrupt/reset options, power-on-reset (POR), and illegal-instruction reset - all meeting requirements for IEC 60730 Class B compliance in household appliances.
Can the R5F102A7ASP#V0 operate from a 1.8 V supply, and what peripherals remain functional at that voltage?
Yes, the R5F102A7ASP#V0 operates across 1.8–5.5 V. At 1.8 V, the high-speed on-chip oscillator runs up to 16 MHz (±1.5% accuracy), the 10-bit ADC remains fully functional with internal reference, and all 26 I/O pins retain TTL-compatible input thresholds and N-ch open-drain drive capability - enabling direct interface with 1.8 V logic systems.
R5F102A7ASP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 30-LSSOP (0.240", 6.10mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- 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:
- 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#V0 FAQ
1.How can I place an order for R5F102A7ASP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F102A7ASP#V0 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#V0 reliable?
The price and inventory of R5F102A7ASP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F102A7ASP#V0 is usually 5 days.
3.What payment methods are accepted for R5F102A7ASP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F102A7ASP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F102A7ASP#V0?
R5F102A7ASP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F102A7ASP#V0 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#V0?
For technical support, including R5F102A7ASP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F102A7ASP#V0 requirements.
6.How does Aetrix verify that R5F102A7ASP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F102A7ASP#V0 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#V0 meets industry standards.
7.What is the process for return or replacement of R5F102A7ASP#V0?
All R5F102A7ASP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F102A7ASP#V0, 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#V0 part is unused and in its original packaging.
Return procedure for R5F102A7ASP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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