My Inquiry
My Account
Renesas R5F10266GSP#X5
- Part No.:
- R5F10266GSP#X5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10266GSP#X5.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,797
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F10266GSP#X5 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller for industrial temperature-grade embedded control, featuring 2 KB code flash, 256 B RAM, 2 KB data flash, 10-bit A/D converter (11 channels), and operation from 1.8 V to 5.5 V across –40°C to +105°C ambient. It integrates UART, two CSI channels, two simplified I²C interfaces, four 16-bit timer channels, and on-chip debug.
For engineers reviewing the R5F10266GSP#X5 datasheet, R5F10266GSP#X5 pinout, R5F10266GSP#X5 application, or R5F10266GSP#X5 equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options - all grounded in Renesas' official R01DS0193EJ0250 Rev.2.50 specification and RL78/G12 family documentation.
Technical Context
The R5F10266GSP#X5 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz while consuming only 63 μA/MHz. Its memory subsystem includes 2 KB code flash (1 KB block size), 2 KB data flash supporting background operation (BGO) and 1M rewrite cycles, and 256 B RAM - constrained by the R5F10266 variant's fixed allocation per Renesas' note on self-programming limitations.
It operates in HS (high-speed main) mode using either external crystal (1–20 MHz) or high-accuracy ±1.0% on-chip oscillator (1–24 MHz), with dedicated low-speed 15 kHz watchdog clock. Peripheral integration includes CRC, RAM guard, SFR guard, and key interrupt support - features exclusive to R5F102-series devices and absent in R5F103 counterparts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing for real-time control loops. |
| Operating Voltage | 1.8 V to 5.5 V; supports direct interface with 1.8/2.5/3.3 V logic without level shifters. |
| Flash Memory | 2 KB code flash + 2 KB data flash; allows firmware updates and nonvolatile parameter storage in same chip. |
| A/D Converter | 10-bit resolution, 11 input channels, internal 1.45 V reference; suitable for sensor monitoring in HVAC and motor control. |
| Timer Resources | Four 16-bit timer channels + 12-bit interval timer + window watchdog; provides PWM generation and safety-critical timeout supervision. |
| Serial Interfaces | 1 UART, 2 CSI (SPI-compatible), 2 simplified I²C channels; enables multi-sensor communication with minimal pin count. |
| Power Modes | HALT, STOP, SNOOZE; achieves sub-μA standby current for battery-powered industrial nodes. |
Pinout & Package
Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, tape-and-reel (#X5).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock Output / SPI Clock / I²C Clock | Multi-function pin enabling buzzer tone generation, synchronous serial communication, or analog sensing - selectable via PIOR register. |
| 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; TOOLRxD enables in-circuit debugging without external adapter. |
| 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 multiple protocols; TOOLTxD supports real-time trace output during development. |
| 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; supports encoder quadrature decoding or pulse-width measurement. |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Dedicated timer I/O pair for dual-edge timing applications; INTP3 enables fast response to external events like button press or fault signal. |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Primary analog reference voltage source; AVREFP sets full-scale range for all 10-bit ADC conversions. |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Provides differential reference for precision measurements; AVREFM enables ratiometric sensor reading independent of supply variation. |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | General-purpose analog input channel; supports temperature sensor and internal reference voltage measurement. |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input; usable for auxiliary sensor inputs such as light or pressure transducers. |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Supports matrix keypad scanning (KR0) and JTAG/SWD debug communication (TOOL0) on same pin. |
| 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 for mixed-signal timing, communication, and event handling - critical for compact industrial node designs. |
| 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 SPI/I²C peripheral while providing timer-based edge detection; eliminates need for external glue logic. |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock / UART Transmit (remappable) | N-ch open-drain I/O with 6 V tolerance; supports hot-plug I²C bus and level-shifted UART transmission. |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data / UART Receive (remappable) | Complements P60 for robust I²C slave interface; remappable TxD0/RxD0 allows flexible PCB routing. |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt | Primary crystal oscillator connection; TI03/INTP3 remapping supports external clock synchronization or fault monitoring. |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt | Crystal output or external clock input; EXCLK enables precise timing from external sources like RTC modules. |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low hardware reset with internal pull-up; SI01 enables daisy-chain SPI configuration when not used for reset. |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated interrupt pin with priority handling; ideal for emergency stop or power-fail detection in safety-critical systems. |
| VDD | Power Supply | Single 1.8–5.5 V supply rail; powers core, peripherals, and I/O - no separate analog/digital rails required. |
| VSS | Ground | Common reference for all digital and analog circuits; must be low-impedance for stable ADC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >10-year battery life in wireless sensor nodes operating at 1 MHz. |
| Data flash with BGO | Background operation allows uninterrupted program execution while logging sensor data or updating calibration tables. |
| On-chip safety functions | CRC engine, RAM guard, and SFR guard provide hardware-level integrity checking for functional safety compliance (IEC 61508 SIL2). |
| Multi-protocol serial interface | UART + dual CSI + dual simplified I²C enables concurrent communication with UART-based modems, SPI sensors, and I²C EEPROMs. |
| Industrial temperature grade | –40°C to +105°C operation ensures reliability in automotive under-hood, factory automation, and outdoor metering environments. |
| Remappable peripheral I/O | Peripheral I/O redirection register (PIOR) allows dynamic reassignment of UART, SPI, and timer pins to optimize PCB layout. |
Applications
| Smart Thermostat Control | Industrial Motor Drive Monitor |
|---|---|
Use Scenario: Embedded controller in residential HVAC systems acquiring temperature/humidity data, driving display, and managing relay outputs. IC Role / Device Role / Timing Role: Primary system MCU executing PID loop, managing I²C-connected environmental sensors, and generating buzzer alerts via PCLBUZ0. Use Value: Integrated 10-bit ADC, 2 KB data flash for calibration storage, and ultra-low-power STOP mode extend battery life in wireless thermostat variants. |
Use Scenario: Compact monitoring module attached to 3-phase motor drives, measuring current/voltage via shunt resistors and reporting faults over UART. IC Role / Device Role / Timing Role: Real-time acquisition front-end with 11-channel ADC sampling at 100 kS/s, using timer-triggered conversions and UART streaming. Use Value: Four 16-bit timers enable precise PWM capture for phase-angle measurement; 2 KB data flash logs trip events without external memory. |
| Programmable Power Supply | Wireless Sensor Node Hub |
Use Scenario: Digital-controlled bench power supply adjusting output voltage/current via DAC feedback and MOSFET gate drivers. IC Role / Device Role / Timing Role: System supervisor coordinating DAC updates, overvoltage protection (via LVD), and USB-to-UART bridge communication. Use Value: On-chip voltage detector with 12-level selection enables programmable OVP thresholds; 1.8–5.5 V operation matches USB VBUS and internal LDO domains. |
Use Scenario: Edge node aggregating data from BLE/Zigbee end-devices, preprocessing sensor streams, and transmitting via LoRaWAN gateway interface. IC Role / Device Role / Timing Role: Low-power coordinator managing sleep/wake cycles, buffering packets in RAM, and scheduling UART transmissions to modem IC. Use Value: SNOOZE mode reduces average current to <10 μA during idle; remappable UART pins simplify routing to external modem modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10267GSP#X5 | 512 B RAM, 4 KB code flash, same 2 KB data flash and peripherals | Supports larger firmware images and deeper stack depth for complex protocol stacks | Select when firmware exceeds 2 KB or requires >256 B runtime variables |
| R5F10366GSP#X5 | No data flash, no DMA, no CRC/RAM/SFR guard, ±5.0% oscillator accuracy | Lacks nonvolatile parameter storage and safety features; suited for cost-sensitive consumer products | Choose only if data flash and safety functions are unnecessary and BOM cost is primary constraint |
Compared with R5F10266GSP#X5, R5F10267GSP#X5 offers scalable memory for evolving firmware while retaining identical safety and timing features; R5F10366GSP#X5 sacrifices data retention and functional safety to reduce unit cost - making it unsuitable for industrial deployments requiring field-updatable parameters or IEC 61508 compliance.
Availability
R5F10266GSP#X5 is available at Aetrix Electronics and suitable for industrial motor monitors, smart thermostats, programmable power supplies, and wireless sensor node hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R5F10266GSP#X5 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 embedded control applications in industrial equipment, home appliances, and sensor nodes - emphasizing energy efficiency, integrated safety, and rapid time-to-market through toolchain compatibility.
FAQ
What is the maximum operating frequency and corresponding power consumption of the R5F10266GSP#X5?
The R5F10266GSP#X5 operates up to 24 MHz using its high-speed on-chip oscillator with ±1.0% accuracy across –40°C to +105°C. At this speed, it consumes 63 μA/MHz - translating to approximately 1.51 mA total active current. This ultra-low-power figure enables continuous operation from coin-cell batteries in maintenance-free sensor applications.
Does the R5F10266GSP#X5 support self-programming of its code flash memory?
No, the R5F10266GSP#X5 does not support self-programming of code flash memory, as explicitly stated in Renesas' datasheet note for R5F10266 and R5F10366 variants. However, it retains full self-programming capability for its 2 KB data flash memory, including background operation (BGO) and 1,000,000 write/erase cycles.
What are the key differences between R5F10266GSP#X5 and R5F10366GSP#X5?
The R5F10266GSP#X5 includes 2 KB data flash, CRC engine, RAM guard, SFR guard, and ±1.0% oscillator accuracy - features absent in the R5F10366GSP#X5. The latter omits data flash and safety peripherals, uses ±5.0% oscillator accuracy, and lacks DMA. These differences make R5F10266GSP#X5 suitable for industrial applications requiring field-updatable parameters and functional safety.
Can the R5F10266GSP#X5 operate from a 1.8 V supply while maintaining full peripheral functionality?
Yes, the R5F10266GSP#X5 guarantees full operation - including 10-bit ADC, UART, timers, and on-chip debug - across its entire 1.8 V to 5.5 V supply range. At 1.8 V, the high-speed on-chip oscillator supports up to 8 MHz operation, and the ADC maintains 10-bit resolution with internal 1.45 V reference, enabling direct interface with low-voltage sensors.
Which development tools are officially supported for the R5F10266GSP#X5?
Renesas officially supports the R5F10266GSP#X5 with the CS+ IDE, e² studio, and IAR Embedded Workbench. Hardware debugging is enabled via the on-chip debug interface using E2 emulator Lite or E2 emulator standard. The device is also compatible with Renesas' RL78/G12 Starter Kit (YRDKRL78G12) for rapid prototyping and validation.
R5F10266GSP#X5 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:
- Obsolete
- 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#X5 FAQ
1.How can I place an order for R5F10266GSP#X5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10266GSP#X5 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#X5 reliable?
The price and inventory of R5F10266GSP#X5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10266GSP#X5 is usually 5 days.
3.What payment methods are accepted for R5F10266GSP#X5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10266GSP#X5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10266GSP#X5?
R5F10266GSP#X5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10266GSP#X5 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#X5?
For technical support, including R5F10266GSP#X5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10266GSP#X5 requirements.
6.How does Aetrix verify that R5F10266GSP#X5 is sourced from the original manufacturer or authorized distributors?
All R5F10266GSP#X5 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#X5 meets industry standards.
7.What is the process for return or replacement of R5F10266GSP#X5?
All R5F10266GSP#X5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10266GSP#X5, 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#X5 part is unused and in its original packaging.
Return procedure for R5F10266GSP#X5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10266GSP#X5 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
