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Renesas R5F1026AASM#35
- Part No.:
- R5F1026AASM#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASM#35.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,422
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Product details
Overview
R5F1026AASM#35 from Renesas Electronics is a 20-pin TSSOP ultra-low-power 16-bit RL78/G12 microcontroller with 16 KB code flash, 2 KB data flash, 1.5 KB RAM, and operation from 1.8 V to 5.5 V. It delivers 31 DMIPS at 24 MHz, features an integrated 10-bit 11-channel ADC, dual CSI/I²C serial interfaces, and supports consumer-grade operation from –40°C to +85°C - ideal for battery-powered sensor nodes and smart home control units.
For engineers reviewing the R5F1026AASM#35 datasheet, R5F1026AASM#35 pinout, R5F1026AASM#35 application, or R5F1026AASM#35 equivalent, key selection considerations include its 2 KB on-chip data flash with background operation (BGO), 2-channel DMA, CRC hardware accelerator, and support for low-power STOP/HALT/SNOOZE modes - all critical for energy-constrained embedded firmware development.
Technical Context
The R5F1026AASM#35 implements the RL78 CPU core with a 3-stage CISC pipeline, 1 MB address space, and configurable instruction execution time (0.04167 µs at 24 MHz). Its clock system integrates a high-accuracy ±1.0% high-speed on-chip oscillator (1–24 MHz) and a 15 kHz low-speed oscillator, enabling precise timing control across power modes.
Peripheral integration includes a 16-bit timer array (TAU0) with 4 channels, window watchdog timer, 12-bit interval timer, and SAU0 supporting UART/CSI/I²C functions. The device supports peripheral I/O redirection via PIOR register, allowing flexible pin assignment for UART0, CSI00/01, IIC00/01, and analog inputs ANI0–ANI3 and ANI16–ANI22.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V logic and single-supply battery operation |
| Flash Memory | 16 KB code flash + 2 KB data flash - supports self-programming and BGO for firmware updates without halting execution |
| RAM Size | 1.5 KB on-chip RAM - sufficient for real-time control stacks and small buffers in sensor fusion applications |
| ADC Resolution | 10-bit A/D converter with 11 input channels - provides precision analog sensing for temperature, voltage, and current monitoring |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C - enables concurrent communication with sensors, displays, and host controllers |
| Power Modes | HALT, STOP, SNOOZE - achieves 63 μA/MHz active current and sub-μA standby, extending battery life in portable devices |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65-mm pitch, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function port pin | Configurable as SPI clock, I²C clock, buzzer output, or analog input - enables shared signal routing in space-constrained layouts |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Serial data input / UART receive | Supports SPI slave-in, UART RX, I²C data, and debug tool interface - simplifies firmware debugging and multi-protocol connectivity |
| P12/ANI18/SO00/TxD0/TOOLTxD | Serial data output / UART transmit | Provides SPI master-out, UART TX, I²C data, and debug tool output - eliminates need for external level shifters in tooling |
| P20/ANI0/AVREFP | Analog reference positive | Supplies stable 1.45 V internal reference or accepts external AVREFP - ensures consistent ADC accuracy across supply variations |
| P21/ANI1/AVREFM | Analog reference negative | Completes differential analog reference path - enables ratiometric measurements and noise rejection in sensor front-ends |
| P125/KR1/SI01/RESET | Reset input / serial data input | Dual-role pin allows hardware reset assertion or SPI slave-in - reduces pin count while maintaining debug and communication capability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current and sub-μA STOP mode - extends coin-cell battery life to years in wireless sensor endpoints |
| On-chip data flash with BGO | 2 KB data flash supports background rewriting during program execution - enables seamless over-the-air parameter updates |
| Hardware CRC accelerator | Dedicated CRC module accelerates checksum calculation for firmware integrity verification - reduces CPU load and improves boot security |
| Peripheral I/O redirection | PIOR register enables dynamic remapping of UART/CSI/I²C functions to alternate pins - increases PCB layout flexibility and reuse |
| Temperature sensor | Integrated on-die temperature sensor with 10-bit ADC - eliminates external sensor for thermal monitoring in motor drivers and power supplies |
Applications
| Smart Thermostat Control | Wireless Sensor Node |
|---|---|
Use Scenario: Local HVAC regulation using ambient temperature, humidity, and occupancy sensing. IC Role / Device Role / Timing Role: Main system controller executing PID loop, managing display, and handling Zigbee/Bluetooth LE radio coexistence. Use Value: 16 KB flash stores full UI stack and protocol stacks; 2 KB data flash retains calibration offsets and user preferences across power cycles. | Use Scenario: Battery-powered environmental monitoring node transmitting data via LoRaWAN or NB-IoT. IC Role / Device Role / Timing Role: Low-power sensor aggregator with wake-on-interrupt, ADC sampling, and radio interface coordination. Use Value: 63 μA/MHz active current and SNOOZE mode reduce average current to <5 μA - enabling 10+ year battery life on CR2032. |
| Industrial Panel Meter | Home Appliance Motor Controller |
Use Scenario: DIN-rail mounted meter reading AC voltage/current with LED display and RS-485 communication. IC Role / Device Role / Timing Role: Precision analog acquisition engine with isolated RS-485 UART and real-time display refresh. Use Value: 11-channel 10-bit ADC captures multiple sensor inputs simultaneously; hardware CRC validates firmware updates over serial link. | Use Scenario: Brushless DC motor control in washing machines with speed feedback, current sensing, and user interface. IC Role / Device Role / Timing Role: Real-time motor commutation controller with PWM generation, fault detection, and HMI button scanning. Use Value: 4-channel 16-bit TAU timer provides precise PWM outputs; N-ch open-drain I/O drives optocouplers directly without external transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASM#35 | Same package and pinout; 12 KB code flash, 2 KB data flash, 768 B RAM - reduced memory footprint | Suitable for cost-sensitive designs where firmware size <12 KB and RAM usage <768 B | Select when application firmware fits within smaller memory and lower BOM cost is prioritized over future scalability |
| R5F1036AASM#35 | No data flash; no DMA; no CRC; ±5.0% oscillator accuracy vs. ±1.0%; same 16 KB flash and 20-pin TSSOP | Applicable where background data storage is unnecessary and tighter timing tolerance is not required | Choose for simpler, lower-cost control tasks without field-updatable parameters or high-precision timing demands |
Compared with R5F10269ASM#35, the R5F1026AASM#35 offers greater firmware headroom and RAM for feature-rich applications; compared with R5F1036AASM#35, it adds critical reliability features - data flash with BGO, hardware CRC, and tighter oscillator accuracy - essential for certified industrial firmware.
Availability
R5F1026AASM#35 is available at Aetrix Electronics and suitable for smart thermostat control, wireless sensor nodes, industrial panel meters, and home appliance motor controllers requiring stable component supply and long-term production continuity.
Supply support for R5F1026AASM#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/G12 product line is designed for ultra-low-power general-purpose applications - balancing performance, energy efficiency, and integration for cost-sensitive, battery-operated, and industrial control systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F1026AASM#35?
The R5F1026AASM#35 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS at that frequency. This performance level is achieved with the RL78 CPU core's 3-stage pipeline and optimized instruction set, enabling real-time processing in compact embedded applications without external clock sources.
Does the R5F1026AASM#35 support background data flash rewriting while executing code from main flash?
Yes, the R5F1026AASM#35 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously erasing or programming data flash sectors - essential for reliable firmware parameter updates and logging without system interruption.
What are the key low-power modes supported by the R5F1026AASM#35 and their typical current consumption?
The R5F1026AASM#35 supports HALT, STOP, and SNOOZE modes. HALT stops the CPU clock but retains RAM and register contents (~0.5 µA); STOP disables all clocks except LVD and RTC (~0.25 µA); SNOOZE enables selective peripheral operation during low-power wait states. Active current is 63 μA/MHz at 24 MHz.
How many analog input channels does the R5F1026AASM#35 provide, and what is the reference voltage configuration?
The R5F1026AASM#35 provides 11 analog input channels (ANI0–ANI3 and ANI16–ANI22) with 10-bit resolution. It supports internal 1.45 V reference voltage and allows external reference via AVREFP/AVREFM pins - enabling both ratiometric and absolute voltage measurements in sensor interface designs.
Is the R5F1026AASM#35 pin-compatible with other RL78/G12 20-pin variants such as R5F10269ASM#35 or R5F1036AASM#35?
Yes, the R5F1026AASM#35 shares identical 20-pin TSSOP packaging (PTSP0020JI-A) and pinout with R5F10269ASM#35 and R5F1036AASM#35. However, functional differences exist - including data flash presence, DMA, CRC, and oscillator accuracy - so firmware and system design must be validated per specific variant requirements.
R5F1026AASM#35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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#35 FAQ
1.How can I place an order for R5F1026AASM#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASM#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 R5F1026AASM#35 reliable?
The price and inventory of R5F1026AASM#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASM#35 is usually 5 days.
3.What payment methods are accepted for R5F1026AASM#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASM#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASM#35?
R5F1026AASM#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASM#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 R5F1026AASM#35?
For technical support, including R5F1026AASM#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASM#35 requirements.
6.How does Aetrix verify that R5F1026AASM#35 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASM#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 R5F1026AASM#35 meets industry standards.
7.What is the process for return or replacement of R5F1026AASM#35?
All R5F1026AASM#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASM#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 R5F1026AASM#35 part is unused and in its original packaging.
Return procedure for R5F1026AASM#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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