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Renesas R5F10266ASM#15
- Part No.:
- R5F10266ASM#15
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10266ASM#15.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,055
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Product details
Overview
R5F10266ASM#15 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 2 KB code flash, 2 KB data flash, and 256 B 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 serial interfaces, UART, four 16-bit timer channels, and ultra-low-power HALT/STOP/SNOOZE modes-targeted for battery-powered sensor nodes and smart home control units.
For engineers reviewing the R5F10266ASM#15 datasheet, R5F10266ASM#15 pinout, R5F10266ASM#15 application, or R5F10266ASM#15 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), ±1.0% high-speed on-chip oscillator accuracy over –20 to +85°C, 20-pin TSSOP package (PTSP0020JI-A), and support for 1.8-V interface compatibility with external 1.8/2.5/3.0-V peripherals.
Technical Context
The R5F10266ASM#15 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling minimum instruction execution time of 0.04167 µs at 24 MHz using the high-speed on-chip oscillator. Its memory subsystem includes dedicated 2 KB data flash supporting 1,000,000 write cycles and background operation, plus security features like block erase prohibition and flash shield window.
Peripheral integration centers on low-power system control: two DMA channels enable efficient memory-to-peripheral transfers in 2 clocks; CRC, RAM guard, and SFR guard provide safety-critical integrity checks; and the 12-bit interval timer plus watchdog timer support deterministic real-time response in industrial sensing applications.
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 interfacing with 1.8-V, 2.5-V, and 3.3-V logic without level shifters |
| Flash Memory | 2 KB code flash + 2 KB data flash - supports self-programming and BGO for firmware updates without halting execution |
| ADC Resolution | 8/10-bit, 11-channel - includes internal 1.45-V reference and temperature sensor for embedded environmental monitoring |
| Serial Interfaces | 1 UART + 2 CSI + 2 simplified I²C - provides flexible multi-protocol connectivity for sensor fusion and display control |
| Power Modes | HALT, STOP, SNOOZE - achieves 63 μA/MHz active current and sub-μA standby for multi-year battery life |
| Oscillator Accuracy | ±1.0% @ –20 to +85°C - eliminates need for external crystal in cost-sensitive consumer applications |
Pinout & Package
Package: 20-pin TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), PTSP0020JI-A, RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.8–5.5 V supply rail; decoupling capacitor required near pin |
| VSS | Ground | Digital ground reference; must be connected to system GND plane |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function port | Configurable as SPI clock, I²C clock, buzzer output, or analog input channel 16 |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Multi-function port | Primary UART receive, SPI data-in, I²C data line, or debug tool interface |
| P12/ANI18/SO00/TxD0/TOOLTxD | Multi-function port | Primary UART transmit, SPI data-out, or debug tool interface |
| P20/ANI0/AVREFP | Analog reference | Positive analog reference input; also serves as first ADC channel |
| P21/ANI1/AVREFM | Analog reference | Negative analog reference input; also serves as second ADC channel |
| P125/KR1/SI01/RESET | Reset input | Active-low reset pin; doubles as SPI data-in and key return input |
| P40/KR0/TOOL0 | Debug interface | On-chip debug communication channel; used for programming and real-time trace |
| P60/KR4/SCLA0/(TxD0) | I²C interface | Open-drain I²C clock line with 6-V tolerance; configurable as UART transmit |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables >5-year battery life in wireless sensor nodes |
| Data flash with BGO | 2 KB data flash allows firmware parameter storage and logging while executing application code |
| Hardware safety functions | CRC engine, RAM guard, and SFR guard detect memory corruption in safety-critical firmware |
| Flexible clocking | High-speed on-chip oscillator selectable from 1–24 MHz with ±1.0% accuracy eliminates external crystal cost |
| 1.8-V interface capability | I/O pins tolerate 1.8-V logic levels, enabling direct connection to low-voltage sensors and displays |
Applications
| Smart Thermostat Control | Industrial Sensor Node |
|---|---|
Use Scenario: Local temperature/humidity regulation with wireless reporting and user interface. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, display driver, RF module timing, and power sequencing. Use Value: Integrated 11-channel ADC and 2 KB data flash reduce BOM count by eliminating external ADC and EEPROM. | Use Scenario: Remote vibration/temperature monitoring in factory equipment with battery backup. IC Role / Device Role / Timing Role: Low-power data acquisition unit performing periodic wake-up, sensor reading, and secure transmission. Use Value: HALT/STOP modes and 63 μA/MHz current extend battery life to 7+ years under typical duty cycle. |
| Home Appliance UI Panel | Medical Wearable Monitor |
Use Scenario: Touchless button interface and LED status feedback in washing machine control panel. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, buzzer tone generation, and LED PWM dimming. Use Value: On-chip PCLBUZ0 and programmable clock outputs drive piezo buzzers and LEDs without external drivers. | Use Scenario: Continuous heart rate and skin temperature tracking in compact wearable patch. IC Role / Device Role / Timing Role: Signal conditioning and digital processing unit interfacing with analog front-end and BLE radio. Use Value: 1.8-V I/O compatibility allows direct connection to low-power analog sensors, minimizing signal chain noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10267ASM#15 | 512 B RAM, same 2 KB data flash and peripheral set | Better suited for applications requiring larger stack depth or local buffer storage | Select when firmware complexity demands >256 B RAM but data flash retention remains critical |
| R5F10366ASM#15 | No data flash; 512 B RAM; ±5.0% oscillator accuracy; no DMA/CRC/RAM guard | Targeted at cost-optimized, non-data-logging applications with relaxed timing requirements | Choose only if data flash and safety features are unnecessary and BOM cost is primary constraint |
Compared with R5F10267ASM#15, the R5F10266ASM#15 trades RAM capacity for minimal die size and cost in ultra-constrained designs; versus R5F10366ASM#15, it delivers essential data logging, safety checking, and tighter timing control at modest premium.
Availability
R5F10266ASM#15 is available at Aetrix Electronics and suitable for smart thermostat control, industrial sensor node deployment, and home appliance UI panels requiring stable component supply across extended production lifecycles.
Supply support for R5F10266ASM#15 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers true low-power 16-bit MCU performance for cost-sensitive general-purpose applications, emphasizing energy efficiency, integrated peripherals, and robust development tooling.
FAQ
What is the maximum operating frequency of the R5F10266ASM#15?
The R5F10266ASM#15 supports a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator. At this speed, it delivers 31 DMIPS of processing performance while maintaining 63 μA/MHz active current consumption. The oscillator accuracy is ±1.0% over –20 to +85°C ambient, making it suitable for applications where external crystal cost or board space is constrained. The R5F10266ASM#15 also supports lower-frequency modes down to 1 MHz for ultra-low-power operation.
Does the R5F10266ASM#15 support data flash read-while-write functionality?
Yes, the R5F10266ASM#15 supports background operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from program memory while simultaneously rewriting data flash sectors. BGO enables seamless firmware parameter updates, event logging, or calibration storage without interrupting real-time application tasks. The R5F10266ASM#15 guarantees 1,000,000 write cycles and supports voltage-range operation from 1.8 V to 5.5 V during rewrites.
What safety features are implemented in the R5F10266ASM#15?
The R5F10266ASM#15 includes hardware-based safety features: CRC calculation engine for data integrity verification, RAM guard to detect unintended memory writes, and SFR guard to prevent accidental modification of special function registers. These features are enabled via dedicated control bits and operate independently of software execution. They are particularly valuable in industrial control and medical device applications where functional safety compliance is required. The R5F10266ASM#15 does not include lock-step cores or ASIL-certified diagnostics, but its guards provide foundational error detection.
Can the R5F10266ASM#15 interface directly with 1.8-V peripherals?
Yes, the R5F10266ASM#15 supports 1.8-V interface compatibility through its I/O port configuration. Multiple pins-including P10 to P14, P20 to P23, and P40 to P42-can be set to TTL input buffer mode with 1.8-V logic thresholds, and the device operates down to 1.8 V supply. This eliminates the need for external level shifters when connecting to 1.8-V sensors, memories, or communication ICs. The R5F10266ASM#15 datasheet confirms 1.8-V operation across all specified temperature ranges.
Is the R5F10266ASM#15 pin-compatible with other RL78/G12 20-pin variants?
Yes, the R5F10266ASM#15 shares identical pinout and package (20-pin TSSOP, PTSP0020JI-A) with all other R5F102xxASM and R5F103xxASM variants in the RL78/G12 family. Pin assignments-including VDD, VSS, RESET, UART, CSI, I²C, ADC, and debug signals-are fully consistent across the 20-pin TSSOP footprint. This allows hardware design reuse and migration between memory/configurations (e.g., R5F10267ASM#15 or R5F10366ASM#15) without PCB revision, provided peripheral usage aligns with the target variant's feature set.
R5F10266ASM#15 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:
- 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:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 256 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:
R5F10266ASM#15 FAQ
1.How can I place an order for R5F10266ASM#15 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10266ASM#15 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 R5F10266ASM#15 reliable?
The price and inventory of R5F10266ASM#15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10266ASM#15 is usually 5 days.
3.What payment methods are accepted for R5F10266ASM#15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10266ASM#15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10266ASM#15?
R5F10266ASM#15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10266ASM#15 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 R5F10266ASM#15?
For technical support, including R5F10266ASM#15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10266ASM#15 requirements.
6.How does Aetrix verify that R5F10266ASM#15 is sourced from the original manufacturer or authorized distributors?
All R5F10266ASM#15 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 R5F10266ASM#15 meets industry standards.
7.What is the process for return or replacement of R5F10266ASM#15?
All R5F10266ASM#15 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10266ASM#15, 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 R5F10266ASM#15 part is unused and in its original packaging.
Return procedure for R5F10266ASM#15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10266ASM#15 Tags
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