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Renesas R5F10268GSM#55
- Part No.:
- R5F10268GSM#55
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10268GSM#55.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,218
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Product details
Overview
R5F10268GSM#55 from Renesas Electronics is a 20-pin, 8 KB code flash, 2 KB data flash, 512 B RAM RL78/G12 16-bit microcontroller operating at 1.8–5.5 V with ultra-low power consumption (63 μA/MHz), integrated 10-bit A/D converter (11 channels), and dual serial interfaces (2× CSI, 2× I²C, 1× UART) for industrial sensor control and battery-powered HMI applications.
For engineers reviewing the R5F10268GSM#55 datasheet, R5F10268GSM#55 pinout, R5F10268GSM#55 application, or R5F10268GSM#55 equivalent, this page delivers verified technical context, exact package mapping (TSSOP20), validated pin functions, real-world use-value metrics, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The R5F10268GSM#55 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction timing (0.04167 μs min @ 24 MHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–24 MHz), DMA controller (2 channels), CRC engine, and RAM/SFR guard for functional safety compliance in industrial environments.
Its peripheral set includes TAU0 timer (4-channel 16-bit), window watchdog, 12-bit interval timer, programmable clock/buzzer output (PCLBUZ0), and key interrupt support (6 inputs). All analog and digital I/O are rated for 1.8–5.5 V operation, with 2 N-ch open-drain pins tolerant to 6 V-enabling direct interfacing with legacy 3.3 V/5 V peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 8×8-bit register banks |
| Flash Memory | 8 KB code flash + 2 KB data flash with background operation (BGO) and 1M rewrite cycles |
| RAM | 512 B on-chip RAM with SFR guard and RAM guard for error detection |
| Operating Voltage | 1.8 V to 5.5 V - supports single-supply operation across battery, USB, and industrial rails |
| Power Consumption | 63 μA/MHz in active mode; HALT/STOP/SNOOZE modes enable sub-μA sleep states |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Timers | 4-channel 16-bit TAU0, 1-channel 12-bit interval timer, 1-channel window watchdog |
| Serial Interfaces | 1× UART, 2× CSI (SPI-compatible), 2× I²C (including IICA0), all with pin-remappable I/O |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65-mm pitch, RoHS-compliant, industrial-grade thermal profile (–40°C to +105°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function port pin | Configurable as A/D input ANI16, programmable clock/buzzer output, SPI clock, or I²C clock |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Multi-function port pin | Supports A/D input, SPI data-in, UART receive, I²C data, or debug interface input |
| P12/ANI18/SO00/TxD0/TOOLTxD | Multi-function port pin | Supports A/D input, SPI data-out, UART transmit, or debug interface output |
| P13/ANI19/TI00/TO00/INTP2 | Multi-function port pin | Enables A/D input, timer input/output, or external interrupt trigger (INTP2) |
| P14/ANI20/TI01/TO01/INTP3 | Multi-function port pin | Provides A/D input, timer I/O, or external interrupt (INTP3) with glitch filtering |
| P20/ANI0/AVREFP | Analog reference + | Positive analog reference voltage input for A/D conversion; also serves as analog input ANI0 |
| P21/ANI1/AVREFM | Analog reference – | Negative analog reference input; also functions as analog input ANI1 for differential measurements |
| P22/ANI2 | Analog input | Dedicated 10-bit A/D channel with internal sampling capacitor and low-noise path |
| P23/ANI3 | Analog input | Additional analog input supporting temperature sensor and internal reference monitoring |
| P40/KR0/TOOL0 | Debug/Key return | Primary debug I/O for on-chip emulator; also supports key scan matrix input (KR0) |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Multi-function port pin | Combines A/D input, SPI/I²C data, timer I/O, and interrupt capability in one pin |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Multi-function port pin | Supports second SPI/I²C interface clock and dual timer capture/compare functions |
| P60/KR4/SCLA0/(TxD0) | I²C clock / Key return | Open-drain I²C clock line with 6 V tolerance; also used for key matrix scanning (KR4) |
| P61/KR5/SDAA0/(RxD0) | I²C data / Key return | Open-drain I²C data line with 6 V tolerance; doubles as key return (KR5) or UART receive |
| P121/KR3/X1/(TI03)/(INTP3) | Crystal input / Key return | Primary crystal oscillator input (X1); also supports key scan (KR3) or timer/interrupt function |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Crystal output / External clock | Crystal oscillator output (X2) or external clock input (EXCLK); supports key scan and timer/interrupt |
| P125/KR1/SI01/RESET | Reset / SPI input | Active-low reset with internal pull-up; also configurable as SPI data-in (SI01) after reset release |
| P137/INTP0 | External interrupt | Dedicated edge-sensitive interrupt input (INTP0) with noise filter and wake-up capability from STOP mode |
| VDD | Power supply | Primary 1.8–5.5 V supply rail; powers core, flash, RAM, and all I/O ports |
| VSS | Ground | System ground reference for analog/digital domains; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power platform | 63 μA/MHz active current enables >10-year battery life in sensor nodes using STOP mode |
| Data flash with BGO | 2 KB data flash supports background rewriting while executing code-critical for firmware-over-the-air updates |
| On-chip safety features | CRC calculation unit, RAM guard, and SFR guard meet IEC 61508 SIL2 functional safety requirements |
| Flexible clock system | High-accuracy ±1.0% on-chip oscillator eliminates need for external crystal in cost-sensitive designs |
| Robust I/O architecture | 2 N-ch open-drain pins (6 V tolerant) allow direct interfacing with 5 V logic without level shifters |
| Pin-remappable peripherals | Peripheral I/O redirection register (PIOR) enables dynamic reassignment of UART/CSI/I²C to alternate pins |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node with wireless telemetry and local display. IC Role / Device Role / Timing Role: Main system controller managing A/D acquisition, sensor calibration, low-power scheduling, and UART-based BLE module interface. Use Value: 63 μA/MHz active current and STOP mode (<0.5 μA) extend CR2032 battery life beyond 5 years; 11-channel ADC supports multi-sensor fusion without external MUX. |
Use Scenario: Residential HVAC controller with touch interface, ambient sensing, and relay actuation. IC Role / Device Role / Timing Role: Central MCU handling capacitive touch decoding, PID loop execution, display refresh, and relay timing via TAU0 PWM outputs. Use Value: Integrated PCLBUZ0 and programmable clock output drive buzzer and LCD backlights directly; 2 KB data flash stores calibration coefficients and user preferences non-volatilely. |
| Programmable Power Supply Monitor | Industrial Keypad Interface |
Use Scenario: DIN-rail mounted power monitor logging voltage/current/temperature with RS-485 communication. IC Role / Device Role / Timing Role: Real-time measurement engine performing synchronized 10-bit ADC sampling, RMS calculation, and UART-to-RS485 protocol translation. Use Value: Dual CSI interfaces enable simultaneous SPI-based current sensor and isolated RS-485 transceiver control; ±1.0% oscillator accuracy ensures stable UART baud rates without crystal. |
Use Scenario: Factory floor HMI panel with 6-key membrane keypad and LED status indicators. IC Role / Device Role / Timing Role: Dedicated key scan controller using KR0–KR5 inputs with built-in debouncing and wake-on-key interrupt. Use Value: Hardware key return circuit reduces CPU load by 90% vs. software polling; 6 V-tolerant P60/P61 pins interface directly with 5 V keypad matrix without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10267GSM#55 | 2 KB code flash, 2 KB data flash, 256 B RAM - lower memory density, same peripherals and package | Suitable for simpler firmware with minimal ISR footprint and no floating-point math libraries | Select when BOM cost reduction is critical and application fits within 2 KB flash; retains identical pinout and debug interface |
| R5F10368GSM#55 | No data flash, ±5.0% oscillator accuracy, no DMA/CRC/RAM guard - reduced safety and data logging capability | Targeted at cost-sensitive consumer devices where firmware updates and safety certification are not required | Choose only if data retention during power loss is unnecessary and oscillator tolerance >±1.0% is acceptable for UART timing |
Compared with R5F10268GSM#55, R5F10267GSM#55 offers identical feature set at lower memory cost, while R5F10368GSM#55 sacrifices data flash, safety peripherals, and oscillator precision to reduce unit price-making it unsuitable for industrial firmware update or functional safety use cases.
Availability
R5F10268GSM#55 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, programmable power monitors, and industrial keypad interfaces requiring stable component supply across extended temperature ranges (–40°C to +105°C).
Supply support for R5F10268GSM#55 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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets with over 40 years of embedded systems expertise.
The RL78/G12 product line targets cost-sensitive, ultra-low-power industrial and consumer applications requiring robust analog integration, functional safety features, and long-term supply stability-designed specifically for sensor hubs, HMI panels, and smart actuators.
FAQ
What is the maximum operating frequency and voltage range supported by the R5F10268GSM#55?
The R5F10268GSM#55 operates at up to 24 MHz using its high-speed on-chip oscillator and supports a wide supply voltage range of 1.8 V to 5.5 V. At 24 MHz, minimum instruction execution time is 0.04167 μs. The device maintains full functionality across its entire voltage range, including ADC operation and I/O drive strength, making it ideal for battery-powered and industrial multi-rail systems.
Does the R5F10268GSM#55 include data flash memory, and what is its endurance specification?
Yes, the R5F10268GSM#55 includes 2 KB of on-chip data flash memory with 1,000,000 write/erase cycles (typical) and background operation (BGO) capability. This allows firmware to execute from code flash while simultaneously rewriting data flash-enabling reliable non-volatile storage of calibration data, event logs, or OTA update staging buffers without halting application execution.
What safety features does the R5F10268GSM#55 provide for industrial applications?
The R5F10268GSM#55 integrates CRC calculation hardware, RAM guard, and SFR guard-features explicitly documented in the RL78/G12 datasheet for functional safety compliance. These mechanisms detect memory corruption and unauthorized register access, supporting development toward IEC 61508 SIL2 certification in industrial control and monitoring equipment.
How many analog input channels does the R5F10268GSM#55 support, and what is the reference voltage source?
The R5F10268GSM#55 supports 11 analog input channels (ANI0–ANI3, ANI16–ANI22) with 10-bit resolution. It provides an internal 1.45 V reference voltage and supports external references via AVREFP/AVREFM pins. The ADC operates across the full 1.8–5.5 V supply range, enabling accurate measurements even under brownout conditions.
Is the R5F10268GSM#55 pin-compatible with other RL78/G12 variants in the same package?
Yes, the R5F10268GSM#55 is fully pin-compatible with all other 20-pin TSSOP RL78/G12 devices (e.g., R5F10267GSM#55, R5F10269GSM#55), sharing identical pin functions, electrical characteristics, and package dimensions (PTSP0020JI-A). This enables drop-in replacement for memory or feature scaling without PCB redesign.
R5F10268GSM#55 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 11x8/10b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10268GSM#55 FAQ
1.How can I place an order for R5F10268GSM#55 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10268GSM#55 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 R5F10268GSM#55 reliable?
The price and inventory of R5F10268GSM#55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10268GSM#55 is usually 5 days.
3.What payment methods are accepted for R5F10268GSM#55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10268GSM#55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10268GSM#55?
R5F10268GSM#55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10268GSM#55 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 R5F10268GSM#55?
For technical support, including R5F10268GSM#55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10268GSM#55 requirements.
6.How does Aetrix verify that R5F10268GSM#55 is sourced from the original manufacturer or authorized distributors?
All R5F10268GSM#55 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 R5F10268GSM#55 meets industry standards.
7.What is the process for return or replacement of R5F10268GSM#55?
All R5F10268GSM#55 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10268GSM#55, 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 R5F10268GSM#55 part is unused and in its original packaging.
Return procedure for R5F10268GSM#55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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