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Renesas R5F1026AASP#X0
- Part No.:
- R5F1026AASP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASP#X0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,675
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Product details
Overview
R5F1026AASP#X0 from Renesas is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 MCU with 16 KB code flash, 2 KB data flash, and 1.5 KB RAM, operating at 1.8–5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an 8/10-bit 11-channel ADC, dual CSI/I²C interfaces, UART, 4-channel 16-bit TAU timer, and DMA-targeted for battery-powered consumer control systems requiring secure firmware updates and precise analog sensing.
For engineers reviewing the R5F1026AASP#X0 datasheet, R5F1026AASP#X0 pinout, R5F1026AASP#X0 application, or R5F1026AASP#X0 equivalent, this page delivers verified electrical specs, validated peripheral mapping, real-world use-case implementation guidance, and confirmed drop-in alternatives for cost-optimized design continuity.
Technical Context
The R5F1026AASP#X0 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 1 µs (1 MHz), and features a dedicated low-speed 15 kHz on-chip watchdog timer. Its memory architecture includes 16 KB code flash with 1 KB block erase granularity and 2 KB data flash supporting background operation (BGO) and 1 million rewrite cycles.
Power management includes HALT, STOP, and SNOOZE modes enabling 63 µA/MHz active current draw; voltage detection offers 12-level programmable reset/interrupt thresholds between 1.88–4.06 V. The device supports key return (KR0–KR5), 18 I/O pins (including 2× 6-V-tolerant N-ch open-drain), and analog inputs with internal 1.45 V reference and temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control at ≤24 MHz |
| Flash Memory | 16 KB code flash + 2 KB data flash; supports self-programming and BGO for firmware-over-air updates |
| RAM | 1.5 KB on-chip RAM; sufficient for RTOS stacks and sensor data buffering in compact embedded nodes |
| ADC | 8/10-bit resolution, 11-channel A/D converter with internal 1.45 V reference and temperature sensor |
| Timers | 4-channel 16-bit TAU timer with PWM output capability; plus 12-bit interval timer and window watchdog |
| Serial Interfaces | 1× UART, 2× simplified SPI (CSI), 2× simplified I²C; enables multi-sensor connectivity without external level shifters |
| Operating Voltage | 1.8–5.5 V single supply; supports direct Li-ion, coin-cell, or regulated 3.3 V/5 V rail integration |
Pinout & Package
Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, tape-and-reel (#X0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog input 16 / Programmable clock/buzzer / CSI00 clock / I²C00 clock | Multi-function pin supporting timer-driven buzzer tone generation, synchronous serial communication, or analog sensing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog input 17 / CSI00 data in / UART0 receive / I²C00 data / debug RX | Shared serial data path enables hardware-assisted debugging while preserving UART/I²C functionality |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog input 18 / CSI00 data out / UART0 transmit / I²C00 data / debug TX | Enables full-duplex debug interface coexistence with primary serial peripherals using PIOR redirection |
| P20/ANI0/AVREFP | Analog input 0 / Positive analog reference voltage | Dual-role pin provides precision reference for ADC measurements and serves as primary analog input channel |
| P21/ANI1/AVREFM | Analog input 1 / Negative analog reference voltage | Completes differential reference pair for ratiometric sensor readings and improves noise immunity |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key return 0 / Debug I/O | Supports capacitive or mechanical keypad scanning while doubling as JTAG/SWD debug I/O |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key return 1 / CSI01 data in / Reset input | Hardware reset with key-scan capability ensures fail-safe recovery and eliminates need for external reset IC |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 63 μA/MHz active current enables >5-year battery life in intermittent-sensing applications |
| Data flash with BGO | 2 KB data flash allows firmware parameter storage and over-the-air updates without halting application execution |
| CRC and memory guard | On-chip CRC engine and RAM/SFR guard detect memory corruption in safety-critical control loops |
| Flexible clock system | High-accuracy ±1.0% on-chip oscillator (1–24 MHz) eliminates external crystal for cost-sensitive designs |
| Dual simplified I²C/CSI | Two independent simplified I²C interfaces support concurrent communication with multiple sensors or displays |
| 11-channel analog front-end | Integrated temperature sensor and 1.45 V reference enable calibrated thermal monitoring without external components |
Applications
| Smart Home Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered CO₂/motion/humidity sensor hub aggregating data from I²C environmental sensors and transmitting via UART to gateway. IC Role / Device Role / Timing Role: Central controller managing sensor polling, ADC sampling, data logging to data flash, and low-power sleep scheduling. Use Value: 63 μA/MHz active current and SNOOZE mode extend CR2032 battery life beyond 3 years; 2 KB data flash stores calibration offsets and event logs. |
Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals, computing SpO₂, and driving OLED display via CSI. IC Role / Device Role / Timing Role: Signal acquisition MCU performing synchronized 10-bit ADC sampling, digital filtering, and real-time display update. Use Value: 11-channel ADC with internal reference and temperature sensor enables factory-calibrated optical measurements; 1.8 V minimum VDD supports single-cell alkaline operation. |
| Industrial Panel Controller | Appliance Motor Control Interface |
|
Use Scenario: Touch-key enabled HVAC control panel with buzzer feedback, LED indicators, and RS-485 UART communication. IC Role / Device Role / Timing Role: Human interface processor handling key scan (KR0–KR5), buzzer tone generation (PCLBUZ0), LED PWM dimming, and protocol translation. Use Value: Integrated key interrupt and programmable clock/buzzer eliminate 3 external ICs; 6-V-tolerant I/O interfaces directly drive 5 V logic without level shifters. |
Use Scenario: Washing machine mainboard sub-controller monitoring motor current (shunt ADC), reading hall sensors, and driving triac gate drivers. IC Role / Device Role / Timing Role: Real-time motor supervision unit executing 16-bit TAU timer-based commutation timing and fault detection. Use Value: 4-channel 16-bit TAU with PWM outputs manages brushless motor phase timing; on-chip voltage detector triggers immediate shutdown during brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASP#X0 | Same package and pinout; 12 KB code flash, 2 KB data flash, 768 B RAM | Lower flash/RAM capacity suits simpler firmware with reduced feature set | Select when application firmware fits within 12 KB and requires identical peripheral count and low-power profile |
| R5F10268ASP#X0 | Same package and pinout; 8 KB code flash, 2 KB data flash, 512 B RAM | Reduced memory targets cost-sensitive, high-volume consumer devices with minimal firmware footprint | Choose for price-sensitive designs where bootloader + application fit in 8 KB and no BGO-intensive logging is required |
Compared with R5F1026AASP#X0, the R5F10269ASP#X0 and R5F10268ASP#X0 retain identical low-power architecture, peripheral set, and 2 KB data flash-but scale down code memory and RAM to reduce bill-of-materials cost without altering PCB layout or firmware porting effort.
Availability
R5F1026AASP#X0 is available at Aetrix Electronics and suitable for smart home sensor nodes, portable medical monitors, industrial HMI panels, and appliance motor interfaces requiring stable component supply across production lifecycles.
Supply support for R5F1026AASP#X0 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 true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated consumer and industrial control applications demanding secure firmware updates and integrated analog functionality.
FAQ
What is the maximum operating frequency and corresponding DMIPS performance of the R5F1026AASP#X0?
The R5F1026AASP#X0 achieves a maximum operating frequency of 24 MHz using its high-accuracy ±1.0% on-chip oscillator, delivering 31 DMIPS performance. This benchmark reflects integer instruction throughput under RL78 core architecture conditions and enables real-time response in sensor fusion and motor control tasks without external clock sources.
Does the R5F1026AASP#X0 support background data flash programming during application execution?
Yes, the R5F1026AASP#X0 supports background operation (BGO) for its 2 KB data flash memory, allowing the CPU to execute instructions from program memory while simultaneously rewriting data flash sectors. This capability is essential for logging runtime parameters or applying firmware patches without interrupting system operation.
How many analog input channels and what ADC resolution does the R5F1026AASP#X0 provide?
The R5F1026AASP#X0 integrates an 8/10-bit resolution successive-approximation ADC with 11 configurable analog input channels (ANI0–ANI3, ANI16–ANI22). It includes an internal 1.45 V reference voltage and on-die temperature sensor, enabling accurate ratiometric measurements and thermal compensation without external components.
What power-saving modes are available on the R5F1026AASP#X0 and their typical current consumption?
The R5F1026AASP#X0 offers HALT, STOP, and SNOOZE low-power modes. In active mode, it consumes 63 μA/MHz at 24 MHz; HALT mode reduces current to ~1.2 μA; STOP mode draws ~0.32 μA; and SNOOZE mode maintains selected peripherals (e.g., UART, ADC) at ~2.1 μA-enabling multi-year battery operation in duty-cycled applications.
Is the R5F1026AASP#X0 pin-compatible with other RL78/G12 20-pin variants like R5F10269ASP#X0?
Yes, the R5F1026AASP#X0 is fully pin-compatible with all RL78/G12 20-pin LSSOP variants including R5F10269ASP#X0 and R5F10268ASP#X0. They share identical pin configuration, peripheral mapping, and electrical characteristics-allowing seamless migration between memory configurations without PCB redesign.
R5F1026AASP#X0 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:
- 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:
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F1026AASP#X0 FAQ
1.How can I place an order for R5F1026AASP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASP#X0 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 R5F1026AASP#X0 reliable?
The price and inventory of R5F1026AASP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASP#X0 is usually 5 days.
3.What payment methods are accepted for R5F1026AASP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASP#X0?
R5F1026AASP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASP#X0 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 R5F1026AASP#X0?
For technical support, including R5F1026AASP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASP#X0 requirements.
6.How does Aetrix verify that R5F1026AASP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASP#X0 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 R5F1026AASP#X0 meets industry standards.
7.What is the process for return or replacement of R5F1026AASP#X0?
All R5F1026AASP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASP#X0, 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 R5F1026AASP#X0 part is unused and in its original packaging.
Return procedure for R5F1026AASP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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