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Renesas R5F10266ASM#75
- Part No.:
- R5F10266ASM#75
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10266ASM#75.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 2K 2
- Quantity:
- Payment:
- Shipping:
Inventory:4,991
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Product details
Overview
R5F10266ASM#75 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 ultra-low-power CPU core (63 μA/MHz), 10-bit 11-channel ADC, UART/CSI/I²C serial interfaces, 4-channel 16-bit TAU timer, and on-chip debug - deployed in battery-powered sensor nodes and industrial control panels.
For engineers reviewing the R5F10266ASM#75 datasheet, R5F10266ASM#75 pinout, R5F10266ASM#75 application, or R5F10266ASM#75 equivalent, key selection criteria include its 2 KB data flash with background operation (BGO), 20-pin TSSOP package (PTSP0020JI-A), -40°C to +85°C A-grade temperature range, and support for HALT/STOP/SNOOZE low-power modes.
Technical Context
The R5F10266ASM#75 implements the RL78 CISC CPU core with 3-stage pipeline and 1 MB address space, executing instructions in 0.04167 µs minimum (at 24 MHz high-speed on-chip oscillator). Its peripheral set includes two CSI channels, two simplified I²C channels, one UART channel, and DMA controller with two channels - all enabled in HS mode only.
It features a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, plus dual on-chip oscillators: high-accuracy ±1.0% 1–24 MHz high-speed oscillator (TA = –20 to +85°C) and 15 kHz low-speed oscillator. The device supports self-programming of code flash but excludes data flash self-programming per Note 2 in datasheet Page 3.
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 battery-backed operation |
| Flash Memory | 2 KB code flash + 2 KB data flash - supports background operation (BGO) for concurrent execution and data rewrite |
| CPU Performance | 31 DMIPS at 24 MHz - delivers deterministic real-time response for motor control and sensor fusion |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference, integrated temperature sensor |
| Low-Power Modes | HALT, STOP, SNOOZE - achieves 63 μA/MHz active current and sub-μA STOP-mode leakage |
| Package | TSSOP-20 (4.4 × 6.5 mm, 0.65 mm pitch, PTSP0020JI-A) - surface-mount compatible with standard reflow profiles |
Pinout & Package
TSSOP-20 package (PTSP0020JI-A), 4.4 mm × 6.5 mm, 0.65 mm pitch, exposed pad not present - compliant with JEDEC MO-153AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer Output / SPI Clock / I²C Clock | Multi-function pin supporting synchronous serial communication or precision timing output without external components |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Data In / UART Receive / I²C Data / Debug Receive | Shared serial receive path for multiple protocols - simplifies PCB routing in resource-constrained designs |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Data Out / UART Transmit / Debug Transmit | Unified transmit interface reduces pin count while maintaining full UART and SPI functionality |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt 2 | Hardware timer capture/compare capability with interrupt trigger - ideal for pulse-width measurement or PWM generation |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Dual timer I/O with interrupt enables independent edge-triggered event handling on same pin |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Provides stable reference voltage source for ADC measurements - eliminates need for external reference IC |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Completes differential analog reference pair - improves noise immunity in noisy industrial environments |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with programmable gain and sampling control - used for sensor signal conditioning |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog channel supporting simultaneous sampling with ANI0–ANI2 for multi-sensor acquisition |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface I/O | Supports both capacitive touch key scanning and in-circuit debugging - reduces BOM count in HMI applications |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Data Out / I²C Data / Timer Input 2 / Timer Output 2 / Interrupt 1 | Highly multiplexed pin enabling mixed-signal timing, communication, and sensing functions in compact layouts |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer Input 3 / Timer Output 3 | Enables second independent SPI or I²C bus - critical for daisy-chained sensors or display interfaces |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock A / UART Transmit (remappable) | I²C master clock output with open-drain drive - supports standard-mode (100 kbps) and fast-mode (400 kbps) buses |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data A / UART Receive (remappable) | I²C bidirectional data line with internal pull-up - eliminates external resistors in point-to-point configurations |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Oscillator Input / Timer Input / Interrupt | Primary crystal connection point - supports 1–20 MHz resonators for precise system timing |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Oscillator Output / External Clock Input / Timer Input / Interrupt | Crystal output or external clock input - enables synchronization to external timing sources or clock distribution networks |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low reset pin with internal pull-up - ensures reliable power-on initialization without external RC network |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt input with configurable edge sensitivity - used for emergency stop or wake-from-STOP triggers |
| VDD | Power Supply | Single 1.8–5.5 V supply - powers core, peripherals, and I/O simultaneously; no separate analog/digital rails required |
| VSS | Ground | Digital ground reference - shared return path for all digital and analog circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current enables >10-year battery life in coin-cell-powered IoT endpoints |
| Data flash with BGO | 2 KB data flash supports background rewriting during program execution - critical for firmware-over-the-air (FOTA) updates |
| On-chip debug interface | Fully integrated debug module eliminates need for external JTAG/SWD adapter - accelerates bring-up and validation |
| Multi-protocol serial interface | 2× CSI, 2× simplified I²C, 1× UART on 20 pins - supports mixed sensor, display, and host communication in minimal footprint |
| Integrated analog subsystem | 10-bit 11-channel ADC with internal reference and temperature sensor - replaces discrete signal-conditioning circuitry |
| Hardware safety functions | CRC engine, RAM guard, and SFR guard - meets IEC 61508 SIL-2 requirements for industrial safety controllers |
Applications
| Smart Thermostat Control | Industrial Sensor Node |
|---|---|
Use Scenario: Wireless HVAC controller measuring ambient temperature/humidity, driving relay outputs, and communicating via UART to Wi-Fi module. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, PID loop execution, and serial protocol translation. Use Value: Integrated 10-bit ADC and 2 KB data flash enable local calibration storage and drift compensation without external EEPROM. |
Use Scenario: Battery-powered vibration/temperature monitor mounted on rotating machinery, transmitting data via RS-485. IC Role / Device Role / Timing Role: Low-power data acquisition unit performing periodic wake-up, analog sampling, and burst transmission. Use Value: SNOOZE mode reduces average current to <2 μA between samples - extends 2xAA battery life beyond 5 years. |
| Home Appliance Motor Driver | Medical Diagnostic Handheld |
Use Scenario: Brushless DC motor control in washing machine drum, requiring PWM generation, current sensing, and fault protection. IC Role / Device Role / Timing Role: Real-time motor commutation controller using TAU timer outputs for 3-phase gate drive signals. Use Value: 4-channel 16-bit TAU with complementary PWM outputs eliminates need for external timer IC or gate driver logic. |
Use Scenario: Portable blood glucose meter acquiring analog test-strip signals, storing calibration curves, and displaying results on LCD. IC Role / Device Role / Timing Role: Mixed-signal front-end processor handling precision analog measurement and secure data logging. Use Value: On-chip 1.45 V reference and temperature sensor ensure accurate strip reading across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10267ASM#75 | 512 B RAM, 2 KB code flash, same 20-pin TSSOP package and peripheral set | Higher RAM headroom for larger buffers or RTOS stacks; identical low-power profile and pinout | Select when application requires >256 B RAM for communication protocol stacks or sensor fusion algorithms |
| R5F10366ASM#75 | No data flash, 2 KB code flash only, ±5.0% oscillator accuracy, no DMA or CRC | Lacks BGO and safety features; suitable for cost-sensitive, non-updatable firmware deployments | Choose for fixed-function devices where field updates and functional safety are not required |
Compared with R5F10267ASM#75 and R5F10366ASM#75, the R5F10266ASM#75 uniquely balances minimal memory footprint (256 B RAM) with essential data retention (2 KB data flash) and industrial-grade oscillator accuracy (±1.0%), making it optimal for space-constrained, update-capable embedded systems.
Availability
R5F10266ASM#75 is available at Aetrix Electronics and suitable for smart thermostat control, industrial sensor nodes, home appliance motor drivers, and medical diagnostic handhelds requiring stable component supply and long-term industrial lifecycle support.
Supply support for R5F10266ASM#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 specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications - emphasizing energy efficiency, integrated analog, and functional safety.
FAQ
What is the maximum operating frequency of the R5F10266ASM#75?
The R5F10266ASM#75 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. When using an external crystal (X1/X2), the maximum frequency is 20 MHz for VDD ≥ 2.7 V or 8 MHz for VDD ≥ 1.8 V. This enables 31 DMIPS performance while maintaining ultra-low-power operation at 63 μA/MHz.
Does the R5F10266ASM#75 support in-system programming of its data flash memory?
Yes, the R5F10266ASM#75 includes 2 KB of data flash memory with background operation (BGO) support, allowing program execution from code flash while rewriting data flash. However, the self-programming function is explicitly disabled for R5F10266 variants per datasheet Note 2 - data flash writes must be performed using the RL78 Family Data Flash Library Type04.
What are the low-power modes supported by the R5F10266ASM#75?
The R5F10266ASM#75 supports HALT, STOP, and SNOOZE modes. HALT stops the CPU while peripherals remain active; STOP halts all clocks except low-speed oscillator; SNOOZE allows selected peripherals (e.g., UART, ADC) to operate while CPU sleeps. STOP mode achieves sub-μA current consumption - critical for battery longevity.
Can the R5F10266ASM#75 drive standard I²C peripherals?
Yes, the R5F10266ASM#75 integrates two independent I²C interfaces: IICA0 (P60/P61) and simplified I²C (P10/P11 and P41/P42). All support standard-mode (100 kbps) and fast-mode (400 kbps) operation with open-drain outputs and programmable slew rate - directly interfacing with common sensors, EEPROMs, and displays without level shifters.
Is the R5F10266ASM#75 pin-compatible with other RL78/G12 20-pin variants?
Yes, the R5F10266ASM#75 shares identical TSSOP-20 pinout (PTSP0020JI-A) and electrical characteristics with all R5F102xxASM and R5F103xxASM 20-pin variants. Pin functions are consistent across the family, enabling hardware reuse when migrating between memory sizes or feature sets - subject to software configuration of peripheral I/O redirection register (PIOR).
R5F10266ASM#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:
- 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#75 FAQ
1.How can I place an order for R5F10266ASM#75 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10266ASM#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 R5F10266ASM#75 reliable?
The price and inventory of R5F10266ASM#75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10266ASM#75 is usually 5 days.
3.What payment methods are accepted for R5F10266ASM#75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10266ASM#75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10266ASM#75?
R5F10266ASM#75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10266ASM#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 R5F10266ASM#75?
For technical support, including R5F10266ASM#75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10266ASM#75 requirements.
6.How does Aetrix verify that R5F10266ASM#75 is sourced from the original manufacturer or authorized distributors?
All R5F10266ASM#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 R5F10266ASM#75 meets industry standards.
7.What is the process for return or replacement of R5F10266ASM#75?
All R5F10266ASM#75 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10266ASM#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 R5F10266ASM#75 part is unused and in its original packaging.
Return procedure for R5F10266ASM#75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10266ASM#75 Tags
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