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Renesas R5F1026AASP#V5
- Part No.:
- R5F1026AASP#V5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASP#V5.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,271
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Product details
Overview
R5F1026AASP#V5 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 MCU designed for consumer-grade embedded control. It integrates 16 KB code flash, 2 KB data flash, 1.5 KB RAM, 11-channel 10-bit ADC, and dual serial interfaces (2× CSI, 2× I²C, 1× UART) operating at 1.8–5.5 V with true low-power operation (63 μA/MHz), HALT/STOP/SNOOZE modes, and CRC hardware acceleration - deployed in battery-powered sensor nodes and smart home controllers.
For engineers reviewing the R5F1026AASP#V5 datasheet, R5F1026AASP#V5 pinout, R5F1026AASP#V5 application, or R5F1026AASP#V5 equivalent, key selection criteria include its 20-pin LSSOP package with 18 I/Os (including 2× 6-V-tolerant N-ch open-drain pins), 2 KB on-chip data flash supporting background rewriting (1M write cycles), high-accuracy ±1.0% on-chip oscillator (24 MHz max), and integrated safety features (RAM/SFR guard, CRC).
Technical Context
The R5F1026AASP#V5 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction timing (0.04167 µs min @ 24 MHz). Its peripheral set includes TAU0 timer (4-channel 16-bit), window watchdog, 12-bit interval timer, and SAU0 serial array unit supporting simultaneous CSI/I²C/UART operation.
Power management integrates on-chip POR, 12-level voltage detector (LVD), and three low-power modes - HALT (CPU stop, peripherals active), STOP (all clocks halted except LSI), and SNOOZE (flash programming during low-power sleep). The device supports self-programming via flash shield window and background data flash writes without halting program execution.
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; block size 1 KB; supports self-programming & BGO |
| RAM | 1.5 KB on-chip RAM; includes RAM guard for error detection |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference, integrated temperature sensor |
| Oscillator | High-speed on-chip oscillator: 1–24 MHz, ±1.0% accuracy (−20 to +85°C) |
| I/O Count | 18 total I/O pins; includes 2× 6-V-tolerant N-ch open-drain outputs |
| Operating Voltage | 1.8 V to 5.5 V single supply; supports mixed-voltage interface (1.8/2.5/3.3 V devices) |
Pinout & Package
Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, tube packaging (#V5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer / SPI Clock / I²C Clock | Multi-function pin supporting timer output, serial clock, analog sensing, or buzzer drive - selectable via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Input / UART RX / I²C Data / Debug RX | Shared serial data path for CSI, UART, I²C, and on-chip debug - enables consolidated peripheral routing |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Output / UART TX / Debug TX | Dual-role output supporting both communication (TxD) and debug (TOOLTxD) without external muxing |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input / Timer Output / Interrupt 2 | Hardware timer capture/compare channel with interrupt capability - used for PWM generation or pulse measurement |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input / Timer Output / Interrupt 3 | Second independent timer I/O pair enabling dual-edge-triggered event capture or complementary PWM |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / ADC Positive Reference | Primary analog reference input; connects directly to internal ADC reference circuitry for precision measurements |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / ADC Negative Reference | Differential analog reference pair enabling ratiometric or offset-compensated sensor readings |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with internal sampling capacitor - supports fast settling for multi-channel scanning |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Fourth dedicated analog input; shares port bank with AVREF pins for compact analog front-end layout |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug I/O | Configurable as keypad scan line, debug data I/O, or general-purpose I/O - supports low-power key wake-up |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Output / I²C Data / Timer I/O / Interrupt 1 | High-flexibility pin combining analog, serial, timer, and interrupt functions - reduces external component count |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer I/O | Second serial interface clock line with timer I/O overlay - enables synchronized dual-protocol communication |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock A / UART TX (remapped) | 6-V-tolerant I²C clock pin with optional UART TX remapping - supports direct connection to 5 V I²C buses |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data A / UART RX (remapped) | 6-V-tolerant I²C data pin with optional UART RX remapping - eliminates level-shifter in mixed-voltage systems |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt 3 | Crystal oscillator input with secondary timer/interrupt function - enables crystal fail detection via timer capture |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt 2 | Crystal oscillator output with external clock input fallback - supports seamless clock source switching |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Input / Reset Input | Reset pin with SPI input alternate function - allows shared reset/SPI lines in space-constrained designs |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin with priority handling - used for critical real-time event response |
| VDD | Power Supply | 1.8–5.5 V main supply; powers all digital and analog circuits including ADC and oscillators |
| VSS | Ground | Reference ground for all I/O, analog, and power domains; must be low-impedance for ADC accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce standby to sub-μA levels for battery life extension |
| On-chip data flash | 2 KB data flash with background operation (BGO) enables firmware updates or parameter storage without interrupting real-time tasks |
| Hardware safety functions | CRC accelerator, RAM guard, and SFR guard detect memory corruption and prevent unsafe state transitions in safety-critical firmware |
| Mixed-voltage I/O | 2× 6-V-tolerant pins (P60/P61) and programmable input thresholds allow direct interfacing with 1.8/2.5/3.3/5 V peripherals without level shifters |
| Integrated analog subsystem | 11-channel 10-bit ADC with internal reference (1.45 V) and temperature sensor enables standalone sensor signal conditioning |
| Multi-protocol serial engine | SAU0 supports concurrent CSI, I²C, and UART on shared pins - reduces PCB layer count and simplifies routing |
Applications
| Smart Home Sensor Node | Industrial Control Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity/light sensor transmitting data via UART to gateway every 30 seconds. IC Role / Device Role / Timing Role: Primary system controller managing ADC sampling, low-power scheduling, UART transmission, and wake-on-interrupt. Use Value: 63 μA/MHz active current and SNOOZE mode extend CR2032 battery life beyond 2 years; integrated 1.45 V reference ensures stable ADC accuracy across voltage drop. |
Use Scenario: Front-panel controller for HVAC unit with keypad, LED indicators, and RS-485 communication. IC Role / Device Role / Timing Role: Human interface processor handling key scan (KR0–KR5), buzzer feedback (PCLBUZ0), LED PWM (TAU0), and isolated UART. Use Value: 6-V-tolerant P60/P61 pins interface directly with 5 V RS-485 transceivers; on-chip key interrupt reduces polling overhead by 90%. |
| Portable Medical Monitor | White Goods Appliance Controller |
Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and computing SpO₂ via onboard algorithm. IC Role / Device Role / Timing Role: Signal acquisition MCU performing 10-bit ADC sampling, digital filtering, and BLE UART output. Use Value: 11-channel ADC with internal temperature sensor enables automatic ambient compensation; 2 KB data flash stores calibration coefficients across 1M+ cycles. |
Use Scenario: Washing machine main board controlling motor drivers, water valves, display, and user inputs. IC Role / Device Role / Timing Role: Central appliance controller managing PWM motor timing (TAU0), keypad scan (KR0–KR5), buzzer alerts (PCLBUZ0), and fault logging. Use Value: CRC hardware acceleration validates EEPROM-stored wash cycle parameters; RAM guard prevents corrupted runtime variables during EMI events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASP#V5 | Same 20-pin LSSOP package and RL78/G12 core, but with 12 KB code flash and identical 2 KB data flash, RAM, and peripherals | Suitable for applications requiring larger firmware footprint but same I/O count and analog resources | Select when firmware size exceeds 16 KB limit of R5F1026AASP#V5 or when future scalability is needed without PCB change |
| R5F1036AASP#V5 | Pin-compatible 20-pin LSSOP variant without data flash, reduced oscillator accuracy (±5%), no DMA, no CRC, and fewer serial channels (1× CSI, 0× I²C) | Targeted at cost-sensitive, non-data-logging applications where background flash writes and hardware CRC are unnecessary | Choose for simpler control tasks with minimal firmware update requirements and lower BOM cost - no data flash dependency |
Compared with R5F10269ASP#V5, the R5F1026AASP#V5 offers maximum code density (16 KB) for complex algorithms, while R5F1036AASP#V5 sacrifices data flash, safety features, and serial flexibility to reduce unit cost - making R5F1026AASP#V5 optimal for feature-rich, field-upgradable consumer devices.
Availability
R5F1026AASP#V5 is available at Aetrix Electronics and suitable for smart home sensors, portable medical monitors, industrial HMI panels, and white goods controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for R5F1026AASP#V5 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 global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of microcontroller innovation.
The RL78/G12 product line targets cost-sensitive, ultra-low-power general-purpose applications - emphasizing energy efficiency, integrated analog, and hardware safety for battery-operated and industrial control systems.
FAQ
What is the maximum operating frequency and voltage range supported by the R5F1026AASP#V5?
The R5F1026AASP#V5 operates at up to 24 MHz using its high-speed on-chip oscillator and supports a wide supply voltage range of 1.8 V to 5.5 V. At 24 MHz, it delivers 31 DMIPS performance with a minimum instruction execution time of 0.04167 µs. The device maintains full functionality across the entire voltage range, enabling direct interfacing with 1.8 V, 3.3 V, and 5 V systems without external regulators.
Does the R5F1026AASP#V5 include on-chip data flash memory, and what are its endurance specifications?
Yes, the R5F1026AASP#V5 integrates 2 KB of on-chip data flash memory with background operation (BGO) capability, allowing program execution from code flash while rewriting data flash. It guarantees 1,000,000 write/erase cycles (typical) and supports rewrites across the full 1.8–5.5 V supply range - enabling reliable parameter storage, firmware updates, and field calibration in the R5F1026AASP#V5.
How many analog-to-digital converter (ADC) channels does the R5F1026AASP#V5 provide, and what is its resolution?
The R5F1026AASP#V5 features an 11-channel, 10-bit successive-approximation ADC with internal 1.45 V reference voltage and integrated temperature sensor. Channels include ANI0–ANI3 and ANI16–ANI22, supporting simultaneous sampling and flexible trigger sources (software, timer, or serial interface). This ADC configuration enables precise sensor signal acquisition in the R5F1026AASP#V5 for applications like environmental monitoring and motor control.
What low-power modes are available on the R5F1026AASP#V5, and how do they impact current consumption?
The R5F1026AASP#V5 provides HALT mode (CPU stopped, peripherals active), STOP mode (all clocks halted except low-speed oscillator), and SNOOZE mode (flash programming during low-power sleep). In STOP mode, current drops to sub-μA levels, while active-mode consumption is rated at 63 μA/MHz - among the lowest in its class. These modes are fully controllable via software, enabling aggressive power optimization in the R5F1026AASP#V5 for battery-powered designs.
Is the R5F1026AASP#V5 pin-compatible with other RL78/G12 variants, and which packages does it support?
Yes, the R5F1026AASP#V5 uses the standard 20-pin LSSOP package (4.4 × 6.5 mm, 0.65-mm pitch) and shares identical pinout with other R5F102xxASP and R5F103xxASP variants in the same pin count - including R5F10269ASP#V5 and R5F1036AASP#V5. This enables direct substitution within the same footprint, though functional differences (e.g., data flash presence, oscillator accuracy) must be verified before replacement in the R5F1026AASP#V5 design.
R5F1026AASP#V5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tube
- 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#V5 FAQ
1.How can I place an order for R5F1026AASP#V5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASP#V5 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#V5 reliable?
The price and inventory of R5F1026AASP#V5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASP#V5 is usually 5 days.
3.What payment methods are accepted for R5F1026AASP#V5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASP#V5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASP#V5?
R5F1026AASP#V5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASP#V5 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#V5?
For technical support, including R5F1026AASP#V5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASP#V5 requirements.
6.How does Aetrix verify that R5F1026AASP#V5 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASP#V5 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#V5 meets industry standards.
7.What is the process for return or replacement of R5F1026AASP#V5?
All R5F1026AASP#V5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASP#V5, 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#V5 part is unused and in its original packaging.
Return procedure for R5F1026AASP#V5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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