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Renesas R5F10268DSP#55
- Part No.:
- R5F10268DSP#55
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10268DSP#55.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,937
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Product details
Overview
R5F10268DSP#55 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller with 8 KB code flash, 2 KB data flash, and 512 B RAM, operating from 1.8 V to 5.5 V at up to 24 MHz (31 DMIPS), used in battery-powered sensor nodes and industrial control interfaces.
For engineers reviewing the R5F10268DSP#55 datasheet, R5F10268DSP#55 pinout, R5F10268DSP#55 application, or R5F10268DSP#55 equivalent, key selection criteria include its integrated 2 KB data flash for logging, 11-channel 10-bit ADC with internal reference, dual CSI/I²C serial interfaces, and support for STOP/HALT/SNOOZE low-power modes down to 63 μA/MHz.
Technical Context
The R5F10268DSP#55 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction execution time (0.04167 μs @ 24 MHz). It integrates a high-accuracy ±1.0% on-chip oscillator (1–24 MHz) and supports external crystal (1–20 MHz) via X1/X2 pins.
It features two CSI channels, two simplified I²C channels, one UART channel, four 16-bit timer channels with PWM capability, CRC hardware acceleration, RAM guard, and SFR guard - all enabled only in R5F102-series devices and absent in R5F103 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space, 8-bit register banks × 4 |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8/2.5/3.3 V peripherals without level shifters |
| Flash Memory | 8 KB code flash + 2 KB data flash - supports background operation (BGO) and 1M rewrite cycles for firmware updates and field data logging |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference and temperature sensor - eliminates need for external reference in thermal monitoring |
| Low-Power Modes | HALT (63 μA/MHz), STOP (0.52 μA typical), SNOOZE - extends battery life in intermittent-sensing applications |
| Serial Interfaces | 2 × CSI (SPI-compatible), 2 × simplified I²C, 1 × UART - enables concurrent communication with multiple sensors and host controllers |
| Timers & PWM | 4 × 16-bit TAU channels with 3 PWM outputs, 1 × 12-bit interval timer, 1 × watchdog - suitable for motor control and timing-critical I/O |
Pinout & Package
Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Buzzer Clock / CSI00 Clock / I²C00 Clock | Multi-function pin supporting synchronous serial comms or programmable tone generation |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / CSI00 Data In / UART0 RX / I²C00 Data / Debug RX | Shared UART/I²C/CSI input with on-chip debug interface - simplifies board bring-up |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / CSI00 Data Out / UART0 TX / Debug TX | Dual-role output for serial comms and debug - reduces pin count in compact designs |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt 2 | Hardware timer capture/compare with interrupt capability - ideal for pulse-width measurement |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Second timer channel for independent edge-triggered event handling |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / ADC Positive Reference | Configurable as analog input or precision ADC reference voltage source |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / ADC Negative Reference | Enables differential ADC measurements when paired with P20 |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with no alternate functions - ensures signal integrity |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input for multi-sensor systems (e.g., temp + humidity + voltage) |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Supports capacitive touch key scanning and in-circuit debugging via single pin |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / CSI01 Data Out / I²C01 Data / Timer Input 2 / Timer Output 2 / Interrupt 1 | Highly multiplexed pin enabling mixed-signal timing, comms, and sensing |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / CSI01 Clock / I²C01 Clock / Timer Input 3 / Timer Output 3 | Shared clock line for second serial peripheral - reduces PCB routing complexity |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C00 Clock / UART0 TX (remapped) | N-ch open-drain I/O with 6 V tolerance - safe for interfacing with higher-voltage buses |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C00 Data / UART0 RX (remapped) | 6 V-tolerant I²C bus pin - allows direct connection to 5 V I²C slaves without level shifters |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Oscillator Input / Timer Input 3 / Interrupt 3 | Primary crystal input with optional timer/interrupt function - enables fail-safe clock monitoring |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Oscillator Output / External Clock Input / Timer Input 2 / Interrupt 2 | Crystal output or external clock input - supports precise timing or external sync sources |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / CSI01 Data In / Reset Input | Active-low reset with internal pull-up - eliminates need for external reset IC in cost-sensitive designs |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated interrupt pin for fast response to external events (e.g., button press, fault signal) |
| VDD | Power Supply | Single 1.8–5.5 V supply - powers entire chip including analog and digital domains |
| VSS | Ground | Common reference for all analog/digital circuits - requires low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| True low-power platform | 63 μA/MHz active current and 0.52 μA STOP mode enable >10-year battery life in wireless sensors |
| On-chip data flash | 2 KB BGO-capable data flash with 1M write endurance - stores calibration data or firmware parameters without external EEPROM |
| Hardware safety functions | CRC accelerator, RAM guard, and SFR guard - detect memory corruption and prevent unintended register writes in safety-critical firmware |
| Dual serial interface sets | Independent CSI00+I²C00 and CSI01+I²C01 pairs - allow simultaneous communication with SPI-based sensors and I²C peripherals |
| Flexible analog subsystem | 11-channel 10-bit ADC with internal 1.45 V reference, AVREFP/AVREFM inputs, and on-chip temperature sensor - enables self-calibrating thermal monitoring |
| Configurable clock system | ±1.0% accurate 1–24 MHz on-chip oscillator + external crystal support - eliminates need for external clock source in most applications |
Applications
| Smart Thermostat Sensor Node | Industrial Motor Control Interface |
|---|---|
|
Use Scenario: Compact, battery-powered HVAC sensor node measuring ambient temperature, humidity, and air quality while transmitting data wirelessly. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, sensor polling, low-power scheduling, and UART-to-Bluetooth bridge logic. Use Value: Integrated 2 KB data flash stores calibration offsets and historical readings; STOP mode draws only 0.52 μA between 30-second wake-ups - extending coin-cell life beyond 5 years. |
Use Scenario: Embedded interface module connecting 3-phase motor drivers, current sensors, and HMI panels in factory automation equipment. IC Role / Device Role / Timing Role: Real-time I/O coordinator handling PWM generation, fault detection interrupts, and RS-485 communication with PLC master. Use Value: Four 16-bit timer channels deliver precise 100 kHz PWM with dead-time insertion; 6 V-tolerant P60/P61 pins directly drive 5 V I²C motor feedback ICs without level shifters. |
| Medical Wearable Vital Monitor | Home Appliance Power Management Unit |
|
Use Scenario: CE-certified wrist-worn device acquiring ECG, skin temperature, and motion data for continuous health tracking. IC Role / Device Role / Timing Role: Signal acquisition processor performing analog front-end conditioning, oversampled ADC conversion, and BLE packet formatting. Use Value: 11-channel ADC with internal reference and temperature sensor enables drift-compensated biopotential measurement; SNOOZE mode maintains UART readiness while consuming <10 μA. |
Use Scenario: Energy-efficient control unit in smart refrigerators regulating compressor speed, defrost cycle, and display backlight based on load and ambient conditions. IC Role / Device Role / Timing Role: System supervisor executing power sequencing, thermal shutdown logic, and user interface state machine. Use Value: Dual CSI interfaces manage both SPI-connected temperature sensors and I²C-connected fan controllers; HALT mode reduces standby consumption to 63 μA/MHz across full 1.8–5.5 V range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269DSP#55 | Same package and pinout; 12 KB code flash + 2 KB data flash vs. 8 KB + 2 KB | Requires larger firmware image size; better suited for complex protocol stacks or OTA update buffers | Select when firmware exceeds 8 KB or future scalability is required; identical low-power behavior and peripheral set |
| R5F10368DSP#55 | No data flash; reduced oscillator accuracy (±5.0%); lacks DMA, CRC, RAM/SFR guard, and simplified I²C | Lower BOM cost but requires external EEPROM for parameter storage and offers no hardware safety features | Choose for cost-sensitive, non-safety-critical applications where data logging is handled externally and firmware fits in 8 KB code flash |
Compared with R5F10269DSP#55, the R5F10268DSP#55 trades 4 KB flash capacity for tighter cost control while retaining identical low-power performance and peripheral functionality; versus R5F10368DSP#55, it adds critical reliability features - data flash, CRC, and memory guards - essential for field-deployed embedded systems.
Availability
R5F10268DSP#55 is available at Aetrix Electronics and suitable for industrial motor control interfaces, battery-powered sensor nodes, medical wearable monitors, and home appliance power management units requiring stable component supply across extended product lifecycles.
Supply support for R5F10268DSP#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications, with over 40 years of microcontroller innovation.
The RL78/G12 family, including the R5F10268DSP#55, was designed specifically for ultra-low-power general-purpose embedded control - balancing energy efficiency, integrated analog capability, and functional safety features for cost-sensitive industrial and consumer systems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating of the R5F10268DSP#55?
The R5F10268DSP#55 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS performance. This is confirmed in the RL78/G12 datasheet (R01DS0193EJ0250 Rev.2.50, Page 1). The core achieves this with a 3-stage pipeline CISC architecture and minimum instruction execution time of 0.04167 μs at 24 MHz. The R5F10268DSP#55 maintains full peripheral functionality across its entire 1.8–5.5 V supply range.
Does the R5F10268DSP#55 include on-chip data flash memory, and what are its key characteristics?
Yes, the R5F10268DSP#55 includes 2 KB of on-chip data flash memory, a feature exclusive to the R5F102 series (not present in R5F103 variants). It supports background operation (BGO), allowing program execution from code flash while rewriting data flash. Rated for 1,000,000 write/erase cycles at VDD = 1.8–5.5 V, it enables reliable firmware parameter storage and field data logging without external EEPROM. This capability is documented in Section 1.1 of the R01DS0193EJ0250 datasheet.
What low-power modes does the R5F10268DSP#55 support, and what are their typical current consumptions?
The R5F10268DSP#55 supports HALT (63 μA/MHz), STOP (0.52 μA typical), and SNOOZE modes. HALT halts the CPU while keeping peripherals active; STOP disables all clocks except the low-speed oscillator (15 kHz), achieving sub-μA sleep; SNOOZE allows selected peripherals (e.g., UART, ADC) to operate while CPU remains halted. These values are specified in the RL78/G12 datasheet (R01DS0193EJ0250 Rev.2.50, Page 1) and validated across the –40°C to +85°C industrial temperature range.
How many analog input channels and what ADC resolution does the R5F10268DSP#55 provide?
The R5F10268DSP#55 provides 11 analog input channels with 10-bit resolution. It includes internal reference voltage (1.45 V), AVREFP/AVREFM pins for differential measurement, and an integrated temperature sensor. All 11 channels (ANI0–ANI3, ANI16–ANI22) are accessible on the 20-pin LSSOP package. This configuration is explicitly listed in Table 1-1 and Section 1.1 of the R01DS0193EJ0250 datasheet, confirming full analog capability in the R5F10268 variant.
What serial communication interfaces are integrated into the R5F10268DSP#55, and how are they distributed across pins?
The R5F10268DSP#55 integrates two CSI (SPI-compatible) channels, two simplified I²C channels, and one UART channel. CSI00 uses P10 (SCK), P11 (SI), P12 (SO); CSI01 uses P42 (SCK), P41 (SO), P125 (SI). I²C00 uses P60 (SCL) and P61 (SDA); I²C01 uses P42 (SCL) and P41 (SDA). UART0 uses P11 (RxD) and P12 (TxD). This dual-serial architecture is confirmed in Section 1.7 "Outline of Functions" and Figure 1-1 of the R01DS0193EJ0250 datasheet.
R5F10268DSP#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:
- 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:
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10268DSP#55 FAQ
1.How can I place an order for R5F10268DSP#55 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10268DSP#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 R5F10268DSP#55 reliable?
The price and inventory of R5F10268DSP#55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10268DSP#55 is usually 5 days.
3.What payment methods are accepted for R5F10268DSP#55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10268DSP#55 transactions.
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R5F10268DSP#55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10268DSP#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 R5F10268DSP#55?
For technical support, including R5F10268DSP#55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10268DSP#55 requirements.
6.How does Aetrix verify that R5F10268DSP#55 is sourced from the original manufacturer or authorized distributors?
All R5F10268DSP#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 R5F10268DSP#55 meets industry standards.
7.What is the process for return or replacement of R5F10268DSP#55?
All R5F10268DSP#55 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10268DSP#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 R5F10268DSP#55 part is unused and in its original packaging.
Return procedure for R5F10268DSP#55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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