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Renesas R5F10266GSP#35
- Part No.:
- R5F10266GSP#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10266GSP#35.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,680
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Product details
Overview
R5F10266GSP#35 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 supporting −40°C to +105°C industrial ambient temperature (G-grade). It integrates a 10-bit A/D converter (11 channels), UART, two CSI channels, two simplified I²C channels, four 16-bit timer channels, and ultra-low-power HALT/STOP/SNOOZE modes - deployed in battery-powered industrial sensor nodes requiring long-term reliability and firmware update capability.
For engineers reviewing the R5F10266GSP#35 datasheet, R5F10266GSP#35 pinout, R5F10266GSP#35 application, or R5F10266GSP#35 equivalent, key selection considerations include its G-grade extended temperature support, on-chip 2 KB data flash for field firmware updates, absence of self-programming capability per Renesas documentation, TSSOP20 package compatibility, and peripheral set optimized for compact industrial control with dual serial interfaces and analog sensing.
Technical Context
The R5F10266GSP#35 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space, delivering 31 DMIPS at 24 MHz. Its high-speed on-chip oscillator supports selectable frequencies from 1–24 MHz with ±1.0% accuracy over −20°C to +85°C and ±2.0% over −40°C to +105°C.
It features CRC operation, RAM guard, and SFR guard safety functions not present in R5F103-series variants, and includes DMA controller (2 channels), multiplier/divider/MAC unit, and background operation (BGO) for data flash rewriting while executing program code - enabling real-time firmware patching without system interruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space, 31 DMIPS @ 24 MHz |
| Memory | 2 KB code flash (1 KB block size), 2 KB data flash (1M rewrite cycles), 256 B RAM |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3/5 V logic and battery-backed operation |
| Temperature Range | −40°C to +105°C (G-grade industrial) - qualified for harsh environments without external thermal derating |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference and integrated temperature sensor |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C - supports multi-sensor communication with minimal pin count |
| Power Modes | HALT (63 μA/MHz), STOP (0.52 μA), SNOOZE - extends battery life in intermittent-sensing applications |
Pinout & Package
Package: 20-pin plastic TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, surface-mountable with standard reflow profile.
| 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 timer-driven buzzer tone generation, synchronous serial master clock, or analog sensing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Data In / UART Receive / I²C Data / Debug RX | Shared serial receive path for UART, I²C, and SPI - simplifies PCB routing for mixed-protocol peripherals |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Data Out / UART Transmit / I²C Data / Debug TX | Unified transmit line for UART, SPI, and I²C - reduces pin count while maintaining protocol flexibility |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt Pin 2 | Hardware timer capture/compare channel with interrupt capability - 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 Pin 3 | Dedicated timer I/O pair with interrupt support - enables dual-edge timing or quadrature decoding |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Reference voltage source for A/D conversion - improves ADC accuracy when externally decoupled |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Differential reference input - enables true differential analog measurements with 10-bit resolution |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | General-purpose analog input with internal 1.45 V reference - eliminates need for external voltage reference IC |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog channel supporting temperature sensor readout and supply monitoring |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Configurable as keypad scan input or debug I/O - supports in-system programming without dedicated JTAG header |
| 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 Pin 1 | High-density multi-function pin - enables simultaneous analog sensing, serial comms, and hardware timing |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer Input 3 / Timer Output 3 | Second SPI/I²C clock domain with timer I/O - allows independent clocking of two sensor buses |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock / UART Transmit (remappable) | I²C master clock output with open-drain drive - compatible with 1.8–5.5 V bus levels and pull-up resistors |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data / UART Receive (remappable) | I²C bidirectional data line with 6 V tolerant N-ch open drain - supports mixed-voltage I²C slave interfacing |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Oscillator Input / Timer Input / Interrupt | Primary crystal oscillator input with internal load capacitance - eliminates external capacitors for basic 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 precision timing via external oscillator or crystal |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low reset with internal pull-up - ensures reliable power-on initialization and external watchdog recovery |
| P137/INTP0 | Port 13 bit 7 / Interrupt Pin 0 | Dedicated external interrupt input - supports fast response to critical events like fault detection or button press |
| VDD | Power Supply | Single 1.8–5.5 V supply - powers entire core, peripherals, and I/O; supports direct Li-ion or coin-cell operation |
| VSS | Ground | Digital ground reference - must be connected to low-impedance PCB plane for noise immunity and ADC accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current, 0.52 μA STOP mode - extends battery life in wireless sensor nodes beyond 5 years |
| G-grade extended temperature | −40°C to +105°C operation - eliminates need for external thermal management in motor drives or outdoor equipment |
| On-chip data flash | 2 KB with 1,000,000 write cycles and background operation - enables field firmware updates without halting application code |
| Integrated safety functions | CRC engine, RAM guard, and SFR guard - detects memory corruption and prevents register misconfiguration in safety-critical tasks |
| Multi-protocol serial support | 1 UART + 2 CSI + 2 simplified I²C - allows concurrent communication with UART-based modems, SPI sensors, and I²C EEPROMs |
| Analog subsystem | 10-bit A/D with 11 channels, internal reference, and temperature sensor - replaces external ADC and thermal monitoring ICs |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality in HVAC ducts or factory floors. IC Role / Device Role / Timing Role: Central MCU managing analog sensor reads, UART communication to gateway, and low-power sleep scheduling. Use Value: 2 KB data flash stores calibration coefficients and firmware patches; G-grade rating ensures stable operation at 95°C duct temperatures. |
Use Scenario: Residential/commercial thermostat with local display, relay control, and Wi-Fi/Ethernet connectivity via external module. IC Role / Device Role / Timing Role: Main controller handling user interface, PID temperature regulation, and serial command parsing from communication module. Use Value: Dual CSI channels interface with display driver and environmental sensor; 10-bit ADC reads thermistor and supply voltage for diagnostics. |
| Programmable Logic Relay | IoT Edge Gateway Subsystem |
|
Use Scenario: DIN-rail mounted relay module with configurable I/O, time-based switching, and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O manager executing ladder logic, generating PWM outputs, and servicing Modbus UART requests. Use Value: Four 16-bit timer channels provide independent PWM outputs for dimming or motor control; HALT mode reduces standby power to <100 μA. |
Use Scenario: Local preprocessing unit aggregating data from multiple BLE/Zigbee sensors before forwarding to cloud via cellular or Ethernet. IC Role / Device Role / Timing Role: Protocol bridge and data filter - converting proprietary sensor frames to standardized JSON payloads using on-device RAM buffer. Use Value: 256 B RAM suffices for packet assembly; 2 KB data flash stores device identity, encryption keys, and OTA update staging area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10267GSP#35 | 1 KB RAM (vs. 256 B), same 2 KB data flash, identical pinout and peripherals | Supports larger local buffers and deeper interrupt nesting - suitable for applications requiring >256 B stack or heap | Select when firmware complexity demands more RAM but retains identical footprint and qualification. |
| R5F10366GSP#35 | No data flash, no CRC/RAM/SFR guard, ±5.0% oscillator accuracy, same 2 KB code flash and 20-pin TSSOP | Lacks field-updatable storage and safety features - appropriate for cost-sensitive, fixed-function designs with no firmware updates | Choose only if data flash and safety functions are unnecessary and oscillator tolerance ≥±5% is acceptable. |
Compared with R5F10267GSP#35 and R5F10366GSP#35, the R5F10266GSP#35 uniquely balances ultra-low-power operation, G-grade temperature resilience, and 2 KB data flash in a 20-pin TSSOP - making it optimal for compact, upgradable industrial edge devices where RAM demand is modest but firmware longevity is critical.
Availability
R5F10266GSP#35 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, programmable relays, and IoT edge gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F10266GSP#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 delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and industrial control applications - emphasizing energy efficiency, integrated analog, and robust qualification for harsh environments.
FAQ
What is the maximum operating frequency and instruction throughput of the R5F10266GSP#35?
The R5F10266GSP#35 operates at up to 24 MHz using its high-speed on-chip oscillator, achieving 31 DMIPS performance. Its minimum instruction execution time is 0.04167 µs at 24 MHz, enabled by the RL78 CPU's 3-stage pipeline and CISC architecture. This throughput supports real-time control loops and sensor fusion algorithms within tight timing budgets.
Does the R5F10266GSP#35 support self-programming of its code flash memory?
No, the R5F10266GSP#35 does not support self-programming of code flash memory, as explicitly stated in Renesas documentation (Note 2, Page 2). While it includes 2 KB of data flash with background operation (BGO), code flash updates require external programming tools - preserving flash endurance and ensuring deterministic runtime behavior.
What are the key differences between the R5F10266GSP#35 and R5F10366GSP#35?
The R5F10266GSP#35 includes 2 KB data flash, CRC operation, RAM guard, SFR guard, and ±1.0% oscillator accuracy over −20°C to +85°C, whereas the R5F10366GSP#35 omits data flash and safety features and has ±5.0% oscillator tolerance. Both share identical 2 KB code flash, 20-pin TSSOP package, and G-grade temperature rating.
Can the R5F10266GSP#35 operate reliably at 1.8 V supply voltage?
Yes, the R5F10266GSP#35 is fully specified for 1.8 V to 5.5 V operation, including all peripherals and the 10-bit A/D converter. At 1.8 V, it supports up to 8 MHz in LS (low-speed) mode and maintains full functionality of UART, timers, and analog inputs - enabling direct integration with single-cell lithium or alkaline battery systems.
Which serial communication protocols are supported by the R5F10266GSP#35?
The R5F10266GSP#35 supports one UART channel, two CSI (SPI-compatible) channels, and two simplified I²C channels - all accessible via remappable pins. These interfaces operate independently and concurrently, allowing simultaneous communication with UART-based modems, SPI temperature sensors, and I²C EEPROMs without resource contention.
R5F10266GSP#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:
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10266GSP#35 FAQ
1.How can I place an order for R5F10266GSP#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10266GSP#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 R5F10266GSP#35 reliable?
The price and inventory of R5F10266GSP#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10266GSP#35 is usually 5 days.
3.What payment methods are accepted for R5F10266GSP#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10266GSP#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10266GSP#35?
R5F10266GSP#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10266GSP#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 R5F10266GSP#35?
For technical support, including R5F10266GSP#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10266GSP#35 requirements.
6.How does Aetrix verify that R5F10266GSP#35 is sourced from the original manufacturer or authorized distributors?
All R5F10266GSP#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 R5F10266GSP#35 meets industry standards.
7.What is the process for return or replacement of R5F10266GSP#35?
All R5F10266GSP#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10266GSP#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 R5F10266GSP#35 part is unused and in its original packaging.
Return procedure for R5F10266GSP#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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