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Renesas R5F1026AASM#15
- Part No.:
- R5F1026AASM#15
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASM#15.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
R5F1026AASM#15 from Renesas Electronics is a 20-pin, TSSOP-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It integrates 16 KB code flash, 2 KB data flash, 1.5 KB RAM, a 24 MHz high-accuracy on-chip oscillator (±1.0% over –20°C to +85°C), and supports 11-channel 10-bit A/D conversion - enabling battery-powered sensor nodes and smart home peripherals.
For engineers reviewing the R5F1026AASM#15 datasheet, R5F1026AASM#15 pinout, R5F1026AASM#15 application, or R5F1026AASM#15 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), dual-channel DMA, CRC hardware accelerator, and support for simplified SPI/I²C/UART interfaces - all within a 4.4 × 6.5 mm TSSOP20 footprint and true low-power HALT/STOP/SNOOZE modes.
Technical Context
The R5F1026AASM#15 implements the RL78 CPU core with a 3-stage pipeline, 1 MB address space, and configurable instruction timing (0.04167 µs min @ 24 MHz). Its power architecture includes dedicated low-speed (15 kHz) and high-speed (1–24 MHz) on-chip oscillators, POR/LVD reset circuitry, and voltage detector interrupt capability across 12 selectable thresholds.
Peripheral integration centers on the TAU0 timer array (4 channels, including PWM outputs), SAU0 serial array (2 CSI + 1 I²C + 1 UART), and analog subsystem with AVREFP/AVREFM references and internal temperature sensor. All I/O pins support N-ch open-drain (6 V tolerant on P21/P22), TTL input buffers, and on-chip pull-up resistors - enabling direct interfacing with 1.8/2.5/3.3 V logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Flash Memory | 16 KB code flash + 2 KB data flash with BGO and 1M rewrite cycles |
| RAM | 1.5 KB on-chip SRAM with RAM guard protection |
| Operating Voltage | 1.8 V to 5.5 V - enables single-supply operation across Li-ion, coin-cell, and USB-powered systems |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE - optimized for intermittent sensing duty cycles |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference and temperature sensor |
| Serial Interfaces | 2× simplified SPI (CSI), 2× simplified I²C, 1× UART - no external level shifters needed for 3.3 V peripherals |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65 mm pitch, lead-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock Output / SPI0 Clock / I²C0 Clock | Multi-function pin supporting buzzer tone generation, synchronous serial clocking, or analog sensing - selected via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI0 Data In / UART0 Receive / I²C0 Data / Debug RX | Shared debug interface and peripheral I/O - eliminates need for separate programming header in space-constrained designs |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI0 Data Out / UART0 Transmit / I²C0 Data / Debug TX | Enables full-duplex UART/CSI/I²C communication while retaining analog input capability for diagnostics |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Dual-role pin providing precise ADC reference voltage and general-purpose analog input - reduces external component count |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Completes differential ADC reference pair; also serves as 6 V-tolerant N-ch open-drain I/O for mixed-voltage signal conditioning |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI1 Data In / Reset Input | Combines hardware reset functionality with peripheral I/O - simplifies board-level reset circuit design |
Key Features
| Feature | Design Value |
|---|---|
| True low-power platform | 63 μA/MHz active current enables >1-year battery life in wake-sleep sensor nodes at 100 ms sampling intervals |
| Data flash with BGO | Background operation allows real-time firmware updates or logging without halting main program execution |
| Hardware CRC accelerator | Offloads checksum computation from CPU - critical for secure OTA updates and data integrity in wireless modules |
| On-chip debug with flash shield | Secure self-programming prevents unauthorized code extraction during development and field programming |
| Dual-channel DMA | Transfers ADC results or UART buffers directly to RAM in 2-clock cycles - frees CPU for real-time control tasks |
Applications
| Smart Home Sensor Node | Industrial Control Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity/motion sensor transmitting data via BLE or sub-GHz RF every 5 seconds. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, sensor fusion, low-power sleep/wake scheduling, and serial interface to radio IC. Use Value: 2 KB data flash stores calibration coefficients and event logs; SNOOZE mode reduces average current to <10 μA between transmissions. |
Use Scenario: Front-panel HMI for HVAC or PLC with pushbuttons, LED indicators, and RS-485 communication. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, LED PWM dimming, UART-to-RS485 bridging, and watchdog supervision. Use Value: 6 V-tolerant N-ch open-drain I/O drives LEDs directly; built-in buzzer output replaces external driver for status alerts. |
| Portable Medical Monitor | Energy-Efficient Appliance Controller |
Use Scenario: Handheld pulse oximeter with OLED display, optical sensors, and USB charging interface. IC Role / Device Role / Timing Role: Central MCU acquiring analog photodiode signals, computing SpO₂, driving display via SPI, and managing USB power negotiation. Use Value: 11-channel ADC supports simultaneous red/IR/ambient sensing; 1.8 V operation extends runtime on single-cell Li-ion. |
Use Scenario: Washing machine mainboard controlling motor drivers, water valves, temperature sensors, and user interface. IC Role / Device Role / Timing Role: System supervisor coordinating motor timing (TAU0 PWM), thermal cutoff (ADC), door lock logic, and fault reporting via UART. Use Value: Hardware CRC validates firmware integrity before boot; LVD interrupts trigger safe shutdown during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASM#15 | Same package and pinout; 12 KB code flash, 2 KB data flash, 768 B RAM | Lower memory capacity suits simpler firmware with minimal data logging or UI assets | Select when application firmware fits ≤12 KB and cost sensitivity outweighs future scalability needs |
| R5F10268ASM#15 | Same package and pinout; 8 KB code flash, 2 KB data flash, 512 B RAM | Reduced RAM limits concurrent peripheral buffering; suitable for basic polling-based control | Choose for ultra-low-cost implementations where BGO and DMA are unused and real-time response is non-critical |
Compared with R5F10269ASM#15 and R5F10268ASM#15, the R5F1026AASM#15 provides maximum on-chip memory headroom (16 KB flash/1.5 KB RAM) and highest computational throughput - making it optimal for feature-rich firmware requiring secure OTA updates, multi-sensor fusion, or complex UI rendering.
Availability
R5F1026AASM#15 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial HMI panels, portable medical monitors, and energy-efficient appliance controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R5F1026AASM#15 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 delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and safety-aware embedded systems - emphasizing energy efficiency, integrated analog peripherals, and robust development tooling.
FAQ
What is the operating voltage range of the R5F1026AASM#15?
The R5F1026AASM#15 operates from 1.8 V to 5.5 V, supporting single-supply designs across battery chemistries (Li-ion, alkaline, coin cell) and line-powered applications. This wide range eliminates need for external regulators in many use cases and ensures reliable startup even under brownout conditions down to 1.8 V.
Does the R5F1026AASM#15 support background data flash rewriting?
Yes, the R5F1026AASM#15 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute code from program memory while simultaneously erasing or writing data flash - essential for logging sensor data or storing configuration parameters without interrupting real-time control loops.
What are the key low-power modes available on the R5F1026AASM#15?
The R5F1026AASM#15 offers HALT (63 μA/MHz), STOP (0.52 μA), and SNOOZE modes. SNOOZE enables selective peripheral operation (e.g., ADC conversion or UART receive) while CPU remains halted - delivering optimal trade-off between responsiveness and power savings in event-driven applications.
How many analog input channels does the R5F1026AASM#15 provide?
The R5F1026AASM#15 provides 11 analog input channels (ANI0–ANI3, ANI16–ANI22) with 10-bit resolution and an internal 1.45 V reference. It also integrates a temperature sensor and supports differential measurements using AVREFP/AVREFM pins - ideal for environmental monitoring and thermal management.
Is the R5F1026AASM#15 pin-compatible with other RL78/G12 20-pin variants?
Yes, the R5F1026AASM#15 shares identical pinout and package (TSSOP20) with all R5F102xxASM and R5F103xxASM variants. This enables drop-in replacement across memory configurations (2–16 KB flash) and functional variants (e.g., R5F10269ASM#15), simplifying design reuse and BOM rationalization.
R5F1026AASM#15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tape & Reel (TR)
- 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:
- 14
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1026AASM#15 FAQ
1.How can I place an order for R5F1026AASM#15 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASM#15 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 R5F1026AASM#15 reliable?
The price and inventory of R5F1026AASM#15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASM#15 is usually 5 days.
3.What payment methods are accepted for R5F1026AASM#15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASM#15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASM#15?
R5F1026AASM#15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASM#15 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 R5F1026AASM#15?
For technical support, including R5F1026AASM#15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASM#15 requirements.
6.How does Aetrix verify that R5F1026AASM#15 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASM#15 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 R5F1026AASM#15 meets industry standards.
7.What is the process for return or replacement of R5F1026AASM#15?
All R5F1026AASM#15 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASM#15, 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 R5F1026AASM#15 part is unused and in its original packaging.
Return procedure for R5F1026AASM#15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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