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Renesas R5F1026AASM#75
- Part No.:
- R5F1026AASM#75
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F1026AASM#75.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 16K
- Quantity:
- Payment:
- Shipping:
Inventory:1,422
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Product details
Overview
R5F1026AASM#75 from Renesas Electronics is a 20-pin, TSSOP-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control. It integrates 16 KB code flash, 2 KB data flash, 1.5 KB RAM, 10-bit A/D converter (11 channels), and operates from 1.8 V to 5.5 V across –40°C to +85°C. Its role is system-level sensor interfacing and real-time actuator control in battery-powered consumer appliances.
For engineers reviewing the R5F1026AASM#75 datasheet, R5F1026AASM#75 pinout, R5F1026AASM#75 application, or R5F1026AASM#75 equivalent, key selection criteria include its 2-channel DMA support, on-chip CRC and RAM/SFR guard safety features, high-accuracy ±1.0% on-chip oscillator (–20°C to +85°C), and integrated data flash with background operation for firmware updates without CPU stall.
Technical Context
The R5F1026AASM#75 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction execution time (0.04167 µs at 24 MHz). It supports HALT, STOP, and SNOOZE low-power modes with 63 µA/MHz active current consumption.
Its peripheral set includes UART0, CSI00/CSI01 (Simplified SPI), IIC00/IIC01 (Simplified I²C), TAU0 timer array (4 channels), 12-bit interval timer, window watchdog, and programmable clock/buzzer output - all accessible via 18 I/O pins including 2× 6-V-tolerant N-ch open-drain outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response in resource-constrained systems |
| Flash Memory | 16 KB code flash + 2 KB data flash; supports self-programming and background rewriting for field firmware updates |
| RAM | 1.5 KB on-chip RAM; sufficient for stack, variables, and interrupt context storage in compact control applications |
| A/D Converter | 10-bit resolution, 11-channel SAR ADC with internal 1.45 V reference and temperature sensor; eliminates external reference need |
| Operating Voltage | 1.8 V to 5.5 V single supply; enables direct interface with 1.8 V, 3.3 V, and 5 V peripherals without level shifters |
| Temperature Range | –40°C to +85°C (A-grade); qualified for consumer appliance environments including kitchen and HVAC controls |
| Power Modes | HALT (0.52 µA), STOP (0.34 µA), SNOOZE (1.2 µA); extends battery life in intermittent-sensing applications |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65-mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog input 16 / Buzzer clock / SPI clock / I²C clock | Multi-function pin supporting serial communication or audio tone generation; selectable via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog input 17 / SPI input / UART receive / I²C data / Debug RX | Shared debug and peripheral interface reduces PCB routing complexity in small-footprint designs |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog input 18 / SPI output / UART transmit / I²C data / Debug TX | Enables full-duplex UART or SPI operation while retaining analog sensing capability on same port |
| P20/ANI0/AVREFP | Analog input 0 / Positive analog reference voltage | Dual-role pin provides precise A/D reference source or sensor input - critical for calibrated measurements |
| P21/ANI1/AVREFM | Analog input 1 / Negative analog reference voltage | Supports differential A/D conversion or ratiometric sensor readings with internal reference stability |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key return 4 / I²C clock / UART transmit (remapped) | Enables hardware I²C master/slave or UART remapping - improves layout flexibility for board space constraints |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key return 5 / I²C data / UART receive (remapped) | Allows dual I²C bus or UART sharing with key scan function - ideal for keypad-integrated user interfaces |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key return 1 / SPI input / Reset input | Combines hardware reset with key scan and SPI - simplifies BOM by eliminating discrete reset IC in cost-sensitive designs |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 µA/MHz active current and sub-µA STOP mode enable multi-year battery life in wireless sensors |
| Data flash with BGO | 2 KB data flash supports background operation: CPU executes code while rewriting flash - no runtime interruption |
| On-chip safety functions | CRC calculation unit, RAM guard, and SFR guard detect memory corruption and prevent unintended register writes |
| High-accuracy on-chip oscillator | ±1.0% accuracy over –20°C to +85°C eliminates need for external crystal in cost-sensitive timing applications |
| Flexible serial interfaces | 2× Simplified SPI (CSI), 2× Simplified I²C, and 1× UART - supports mixed-protocol sensor networks without external bridges |
| Programmable clock/buzzer output | PCLBUZ0 generates precise 2.44 kHz–10 MHz tones or clocks - replaces external oscillator in buzzer-driven HMI |
Applications
| Smart Home Thermostat | Portable Blood Glucose Meter |
|---|---|
Use Scenario: Temperature and humidity sensing with LCD display, button interface, and BLE connectivity. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, UI rendering, and host MCU coordination via UART. Use Value: Integrated 11-channel A/D and 2 KB data flash enable calibration storage and sensor fusion without external memory. |
Use Scenario: Electrochemical strip reading, LED backlight control, and USB charging management in handheld medical device. IC Role / Device Role / Timing Role: Precision analog front-end controller with low-noise A/D and regulated power sequencing. Use Value: 1.45 V internal reference and ±1.0% oscillator ensure repeatable glucose measurement accuracy across battery voltage range. |
| Wireless Remote Control | Industrial Panel Meter |
Use Scenario: IR/RF remote with multi-key matrix, LED indicators, and low-battery detection. IC Role / Device Role / Timing Role: Keypad scanner and status indicator driver with wake-on-key interrupt. Use Value: 6-key return (KR0–KR5) and SNOOZE mode reduce average current to <1 µA during standby. |
Use Scenario: DIN-rail mounted meter with 4–20 mA loop interface, local display, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Isolated communication gateway and analog signal conditioner. Use Value: Dual UART (one remapped to P60/P61) supports simultaneous host and fieldbus communication with minimal pin count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F1036AASM#75 | No data flash (0 KB), no DMA, no CRC/RAM/SFR guard, ±5.0% oscillator accuracy | Lacks background firmware update capability and safety monitoring; suitable only for non-critical, fixed-function control | Select when cost is primary constraint and data retention or functional safety not required |
| R5F10269ASM#75 | 2 KB code flash (vs. 16 KB), identical data flash, RAM, peripherals, and package | Insufficient program memory for complex UI or protocol stacks; limited to basic sensor polling tasks | Select for ultra-low-cost replacements where firmware size ≤2 KB and no future feature expansion planned |
Compared with R5F1036AASM#75 and R5F10269ASM#75, the R5F1026AASM#75 uniquely delivers production-ready safety features, field-upgradable data storage, and high-precision timing - making it optimal for certified consumer and industrial edge devices requiring long-term reliability.
Availability
R5F1026AASM#75 is available at Aetrix Electronics and suitable for smart home controllers, portable medical diagnostics, and industrial HMI panels requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for R5F1026AASM#75 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 targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized performance-per-milliwatt for battery-operated and energy-harvesting systems.
FAQ
What is the maximum operating frequency of the R5F1026AASM#75?
The R5F1026AASM#75 supports up to 24 MHz operation using its high-speed on-chip oscillator, achieving 31 DMIPS performance. When using an external crystal (X1), the maximum main system clock is 20 MHz under 2.7–5.5 V supply conditions. The R5F1026AASM#75 maintains full peripheral functionality at all supported frequencies, including A/D conversion and serial interfaces.
Does the R5F1026AASM#75 include data flash memory?
Yes, the R5F1026AASM#75 includes 2 KB of dedicated data flash memory. This memory supports background operation (BGO), allowing the CPU to execute instructions from code flash while simultaneously rewriting data flash - essential for logging, calibration storage, or over-the-air updates. The R5F1026AASM#75 guarantees 1,000,000 rewrite cycles at 1.8–5.5 V.
What safety features are implemented in the R5F1026AASM#75?
The R5F1026AASM#75 integrates CRC calculation hardware, RAM guard, and SFR guard - all confirmed in the RL78/G12 datasheet for R5F102 products. These features detect memory corruption and prevent unauthorized register writes, meeting baseline requirements for IEC 61508 SIL-2 and ISO 26262 ASIL-B applications. The R5F1026AASM#75 does not include lockstep cores or ECC RAM.
Can the R5F1026AASM#75 operate from a 1.8 V supply?
Yes, the R5F1026AASM#75 is fully specified for operation from 1.8 V to 5.5 V. At 1.8 V, it supports low-speed main (LS) mode up to 8 MHz and retains full functionality of its 10-bit A/D converter, UART, timers, and I/O ports. The R5F1026AASM#75's 63 µA/MHz active current and sub-µA STOP mode make it ideal for coin-cell or energy-harvesting applications.
Is the R5F1026AASM#75 pin-compatible with other RL78/G12 20-pin variants?
Yes, the R5F1026AASM#75 shares identical pinout and package (20-pin TSSOP, PTSP0020JI-A) with all R5F102xxASM and R5F103xxASM variants. However, peripheral availability differs: R5F1026AASM#75 includes data flash, DMA, and safety features absent in R5F103x parts. Pin compatibility enables drop-in replacement only when software and feature requirements align - verify memory map and peripheral enable registers before substitution.
R5F1026AASM#75 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- 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#75 FAQ
1.How can I place an order for R5F1026AASM#75 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F1026AASM#75 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#75 reliable?
The price and inventory of R5F1026AASM#75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F1026AASM#75 is usually 5 days.
3.What payment methods are accepted for R5F1026AASM#75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F1026AASM#75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F1026AASM#75?
R5F1026AASM#75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F1026AASM#75 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#75?
For technical support, including R5F1026AASM#75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F1026AASM#75 requirements.
6.How does Aetrix verify that R5F1026AASM#75 is sourced from the original manufacturer or authorized distributors?
All R5F1026AASM#75 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#75 meets industry standards.
7.What is the process for return or replacement of R5F1026AASM#75?
All R5F1026AASM#75 units undergo pre-shipment inspection (PSI). If there is an issue with R5F1026AASM#75, 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#75 part is unused and in its original packaging.
Return procedure for R5F1026AASM#75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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