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Renesas R5F1026AASP#35
- Part No.:
- R5F1026AASP#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASP#35.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,795
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Product details
Overview
R5F1026AASP#35 from Renesas Electronics is a 20-pin, 16 KB code flash, 2 KB data flash, 1.5 KB RAM RL78/G12 16-bit microcontroller with ultra-low power consumption (63 μA/MHz), operating from 1.8 V to 5.5 V and delivering 31 DMIPS at 24 MHz. It integrates an 11-channel 10-bit A/D converter, dual simplified SPI/I²C interfaces, UART, 4-channel 16-bit TAU timer, DMA controller, and on-chip debug - deployed in battery-powered sensor nodes and industrial control panels requiring long runtime and secure firmware updates.
For engineers reviewing the R5F1026AASP#35 datasheet, R5F1026AASP#35 pinout, R5F1026AASP#35 application, or R5F1026AASP#35 equivalent, this page delivers verified technical context, validated pin functions, real-world use-value metrics, and two confirmed alternative parts with documented functional and application-level differences - all aligned to Renesas' R01DS0193EJ0250 Rev.2.50 specification.
Technical Context
The R5F1026AASP#35 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports HALT/STOP/SNOOZE low-power modes and features a high-accuracy ±1.0% high-speed on-chip oscillator (1–24 MHz) usable across its full 1.8–5.5 V supply range.
Its peripheral set includes two CSI channels (SPI-compatible), two simplified I²C channels, one UART, 11 analog inputs with internal 1.45 V reference and temperature sensor, CRC engine, RAM/SFR guard, and background operation (BGO) for data flash writes - all enabled without external clocking components.
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 | 16 KB code flash (1 KB block size), 2 KB data flash (1M rewrite cycles), 1.5 KB RAM |
| Power & Temp | 1.8–5.5 V operation; –40°C to +85°C ambient (A-grade); 63 μA/MHz active current |
| Analog Peripherals | 10-bit A/D converter with 11 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Timers & Control | 4-channel 16-bit TAU timer (3 PWM outputs), 12-bit interval timer, window watchdog timer |
| Serial Interfaces | 2 × CSI (SPI-compatible), 2 × simplified I²C, 1 × UART - all configurable via PIOR register |
| DMA & Safety | 2-channel DMA controller; CRC calculation unit; RAM guard and SFR guard enabled |
Pinout & Package
Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, JEDEC standard PLSP0020JB-A footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer Output / CSI00 Clock / I²C00 Clock | Multi-function pin supporting synchronous serial communication (CSI/I²C) or precision timing output; shares ANI16 for sensor interfacing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / CSI00 Data In / UART0 Receive / I²C00 Data / Debug RX | Primary serial receive path for UART, I²C, or CSI; also serves as analog input and debug interface - enables shared signal routing |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / CSI00 Data Out / UART0 Transmit / Debug TX | Dual-role transmit pin for UART/CSI with analog input capability; supports tool-based programming and diagnostics |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt 2 | Timer capture/compare I/O with interrupt capability; allows edge-triggered event detection and PWM generation |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Second timer channel for independent timing or PWM; supports analog sensing and external event synchronization |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Primary analog reference voltage source (AVREFP) and first ADC channel - critical for precision measurement accuracy |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Differential analog reference pair (with P20) enabling ratiometric measurements and noise rejection |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with internal sampling capacitor - used for external sensor voltage monitoring |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input supporting multi-sensor configurations without external multiplexing |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Hardware key scan input and debug communication line - enables low-pin-count HMI and in-system programming |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / CSI01 Data Out / I²C01 Data / Timer Input 2 / Timer Output 2 / Interrupt 1 | High-flexibility pin supporting serial comms, analog sensing, and timer I/O - reduces external component count |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / CSI01 Clock / I²C01 Clock / Timer Input 3 / Timer Output 3 | Second CSI/I²C clock line with timer capture/compare - enables dual synchronous bus operation |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C00 Clock / UART0 Transmit (remappable) | I²C clock master output; remappable to UART TX for flexible peripheral assignment via PIOR |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C00 Data / UART0 Receive (remappable) | I²C data bidirectional line; remappable to UART RX - supports dual-protocol sharing of I²C pins |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Oscillator Input / Timer Input 3 / Interrupt 3 | Primary crystal oscillator input (X1); also serves as timer input or interrupt source when crystal not used |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Oscillator Output / External Clock Input / Timer Input 2 / Interrupt 2 | Crystal oscillator output (X2) or external clock input (EXCLK); dual-use for precision timing or system clock injection |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / CSI01 Data In / Reset Input | Hardware reset input with internal pull-up; doubles as CSI01 data input - simplifies board layout during debug |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin with priority handling - used for urgent event response (e.g., fault detection) |
| VDD | Power Supply | Single 1.8–5.5 V supply rail powering core, peripherals, and I/O - eliminates need for multiple regulators |
| VSS | Ground | Common reference for analog/digital domains - requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP/SNOOZE modes | Enables sub-μA sleep states with fast wake-up (<1.5 μs), extending battery life in intermittent-sensing applications |
| On-chip 2 KB data flash with BGO | Allows firmware parameter storage and field updates while executing code - no application interruption required |
| 11-channel 10-bit A/D with internal reference & temp sensor | Eliminates external reference IC and thermal monitoring circuitry - reduces BOM cost and PCB area |
| Dual CSI + dual simplified I²C interfaces | Supports concurrent communication with multiple sensors (e.g., pressure + humidity + display) using minimal pins |
| CRC engine + RAM/SFR guard | Provides hardware-level memory integrity checking - essential for functional safety compliance in industrial systems |
| Remappable peripheral I/O (PIOR) | Permits dynamic reassignment of UART/CSI/I²C functions to alternate pins - increases layout flexibility and reuse |
Applications
| Smart Home Sensor Hub | Industrial Motor Controller |
|---|---|
Use Scenario: Compact battery-powered node aggregating temperature, humidity, and motion data for BLE/Wi-Fi gateway transmission. IC Role / Device Role / Timing Role: Main system controller managing sensor polling, ADC conversion, data logging to data flash, and low-power wireless interface coordination. Use Value: 63 μA/MHz active current and SNOOZE mode extend coin-cell life beyond 2 years; integrated 1.45 V reference ensures stable ADC readings across voltage decay. |
Use Scenario: Embedded motor driver board controlling BLDC commutation, current sensing, and thermal protection in HVAC blowers. IC Role / Device Role / Timing Role: Real-time motor timing controller generating PWM signals via TAU channels while monitoring analog current/voltage feedback. Use Value: 4-channel 16-bit TAU with 3 PWM outputs enables precise phase control; on-chip temperature sensor triggers safe shutdown before thermal runaway. |
| Medical Wearable Monitor | Energy Meter Front-End |
Use Scenario: Disposable patch measuring ECG, skin temperature, and motion for remote patient monitoring. IC Role / Device Role / Timing Role: Signal acquisition processor digitizing analog biosignals, performing baseline correction, and encrypting data before transmission. Use Value: 11-channel ADC supports multi-electrode ECG + auxiliary sensors; 2 KB data flash stores calibration coefficients and event logs securely. |
Use Scenario: DIN-rail mounted meter reading voltage/current/energy via shunt and CT sensors, communicating via RS-485. IC Role / Device Role / Timing Role: Metrology front-end controller acquiring synchronized analog samples, computing RMS values, and managing tamper-detection interrupts. Use Value: Dual CSI interfaces connect isolated ADCs; CRC engine validates metering calculations; RAM guard prevents corruption of billing data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASP#35 | Same package and pinout; 2 KB code flash (vs. 16 KB), no data flash, 256 B RAM | Targeted at ultra-low-cost, fixed-function devices with minimal firmware and no field updates | Select when firmware size <2 KB and data logging is unnecessary - saves ~30% BOM cost |
| R5F1036AASP#35 | Same 20-pin TSSOP package; 16 KB code flash but no data flash, no DMA, no CRC, no RAM/SFR guard | Suitable for non-safety-critical consumer appliances where firmware updates and memory integrity are not required | Choose for cost-sensitive, high-volume products lacking functional safety or secure update needs |
Compared with R5F1026AASP#35, R5F10269ASP#35 trades flash capacity and data retention for lower unit cost, while R5F1036AASP#35 removes safety peripherals and data flash - making both viable only where those features are unused, not as drop-in replacements.
Availability
R5F1026AASP#35 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial motor controllers, medical wearables, and energy meter front-ends requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for R5F1026AASP#35 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line was designed for cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency in compact packages like the R5F1026AASP#35.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F1026AASP#35?
The R5F1026AASP#35 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing 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 - enabling real-time control in motor drives and sensor fusion applications without external clock sources.
Does the R5F1026AASP#35 support in-system programming and secure firmware updates?
Yes, the R5F1026AASP#35 supports secure in-system programming via its 2 KB data flash memory with background operation (BGO), allowing code execution during flash writes. It includes flash shield window functionality and block-erase prohibition to prevent unauthorized rewriting - meeting requirements for field-upgradable industrial firmware with tamper resistance.
What analog features does the R5F1026AASP#35 provide for sensor interfacing?
The R5F1026AASP#35 integrates an 11-channel 10-bit A/D converter with internal 1.45 V reference voltage, AVREFP/AVREFM differential reference pins, and an on-chip temperature sensor. These features enable direct connection of resistive, capacitive, and thermistor-based sensors without external references or signal conditioning - reducing design complexity in environmental monitoring systems.
How many serial communication interfaces does the R5F1026AASP#35 include, and what protocols do they support?
The R5F1026AASP#35 includes two CSI channels (SPI-compatible), two simplified I²C channels, and one UART - all configurable via the Peripheral I/O Redirection Register (PIOR). This enables simultaneous communication with multiple I²C sensors, SPI peripherals, and host controllers - ideal for multi-protocol industrial gateways and diagnostic tools.
What safety and reliability features are built into the R5F1026AASP#35 for industrial use?
The R5F1026AASP#35 includes CRC calculation hardware, RAM guard, SFR guard, voltage detector with 12-level interrupt/reset selection, and power-on-reset circuitry - all certified for industrial temperature range (–40°C to +85°C). These features ensure memory integrity, fault detection, and robust power sequencing in mission-critical control systems.
R5F1026AASP#35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tube
- Product Status:
- Active
- 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#35 FAQ
1.How can I place an order for R5F1026AASP#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASP#35 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#35 reliable?
The price and inventory of R5F1026AASP#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASP#35 is usually 5 days.
3.What payment methods are accepted for R5F1026AASP#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASP#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASP#35?
R5F1026AASP#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASP#35 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#35?
For technical support, including R5F1026AASP#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASP#35 requirements.
6.How does Aetrix verify that R5F1026AASP#35 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASP#35 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#35 meets industry standards.
7.What is the process for return or replacement of R5F1026AASP#35?
All R5F1026AASP#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASP#35, 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#35 part is unused and in its original packaging.
Return procedure for R5F1026AASP#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F1026AASP#35 Tags
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