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Renesas R5F10268ASP#35
- Part No.:
- R5F10268ASP#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10268ASP#35.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
R5F10268ASP#35 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 8 KB code flash, 2 KB data flash, and 512 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, dual CSI/I²C serial interfaces, and DMA for sensor monitoring and battery-powered control in consumer-grade industrial equipment.
For engineers reviewing the R5F10268ASP#35 datasheet, R5F10268ASP#35 pinout, R5F10268ASP#35 application, or R5F10268ASP#35 equivalent, key selection criteria include its TSSOP20 package, -40°C to +85°C A-grade temperature rating, on-chip data flash endurance (1M rewrites), high-accuracy ±1.0% on-chip oscillator (TA = -20 to +85°C), and integrated CRC/SFR guard for functional safety compliance.
Technical Context
The R5F10268ASP#35 implements the RL78 CISC CPU core with 3-stage pipeline, 1 MB address space, and configurable instruction timing (0.04167 μs min @ 24 MHz). Its power architecture supports HALT, STOP, and SNOOZE modes with on-chip POR and 12-level LVD for robust brown-out recovery.
Peripheral integration includes two CSI channels (SPI-compatible), one UART channel, two simplified I²C channels, four 16-bit timer channels with PWM capability, and a dedicated 15 kHz low-speed on-chip oscillator for watchdog operation - all accessible via 18 I/O pins including 2× 6-V-tolerant N-ch open-drain outputs.
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 | 8 KB code flash + 2 KB data flash - supports background rewriting (BGO) and 1M rewrite cycles |
| CPU Performance | 31 DMIPS @ 24 MHz; 0.04167 μs min instruction time - balances speed and ultra-low power (63 μA/MHz) |
| Analog Peripherals | 10-bit 11-channel ADC with internal 1.45 V reference and on-chip temperature sensor |
| Serial Interfaces | 2× CSI (SPI-compatible), 2× simplified I²C, 1× UART - no I²C master-only limitation |
| Timer System | 4× 16-bit timer channels + 12-bit interval timer + windowed watchdog - supports PWM, capture, and real-time scheduling |
Pinout & Package
Package: 20-pin TSSOP (4.4 × 6.5 mm, 0.65-mm pitch), RoHS-compliant, JEDEC standard PTSP0020JI-A footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function port pin | Configurable as ADC input ANI16, programmable clock/buzzer output, or SPI/I²C clock - enables shared signal routing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Serial data input / debug receive | Supports SPI slave-in, UART receive, I²C data, and on-chip debug communication - reduces external interface count |
| P12/ANI18/SO00/TxD0/TOOLTxD | Serial data output / debug transmit | Provides SPI slave-out, UART transmit, I²C data, and debug TX - enables single-pin dual-role signaling |
| P13/ANI19/TI00/TO00/INTP2 | Timer input/output / interrupt | Accepts external timing events (TI00), generates PWM (TO00), or triggers interrupt INTP2 - consolidates timing and event handling |
| P14/ANI20/TI01/TO01/INTP3 | Timer input/output / interrupt | Dedicated second timer channel with interrupt support - enables dual-edge capture or independent PWM generation |
| P20/ANI0/AVREFP | Analog reference positive | Serves as primary ADC reference voltage input (AVREFP) and analog input ANI0 - simplifies precision sensing design |
| P21/ANI1/AVREFM | Analog reference negative | Provides ADC reference ground (AVREFM) and analog input ANI1 - enables differential measurement capability |
| P22/ANI2 | Analog input | Dedicated 10-bit ADC channel - supports sensor signal acquisition without multiplexing overhead |
| P23/ANI3 | Analog input | Additional analog input with same reference domain as P20/P21 - expands multi-sensor front-end options |
| P40/KR0/TOOL0 | Debug I/O / key return | Used for on-chip debug communication (TOOL0) or keypad scanning (KR0) - eliminates need for separate debug header |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Multi-function peripheral pin | Combines ADC, SPI/I²C data, timer I/O, and interrupt - maximizes peripheral density in compact TSSOP20 |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Multi-function peripheral pin | Supports second SPI/I²C clock, ADC input, and dual timer functions - enables synchronized dual-interface operation |
| P60/KR4/SCLA0/(TxD0) | I²C clock / key return | Primary I²C clock line (SCLA0) with key return (KR4) fallback - ensures compatibility with legacy keypad designs |
| P61/KR5/SDAA0/(RxD0) | I²C data / key return | Primary I²C data line (SDAA0) with key return (KR5) option - provides hardware-level I²C bus arbitration |
| P121/KR3/X1/(TI03)/(INTP3) | Crystal input / key return | Connects to external crystal (X1) or serves as key scan input - allows flexible clock source selection |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Crystal output / external clock | Drives crystal (X2) or accepts external clock (EXCLK) - supports both crystal and oscillator-based timing |
| P125/KR1/SI01/RESET | Reset input / key return | Hardware reset assertion (RESET) with key return (KR1) capability - enables single-pin system initialization and keypad wake-up |
| P137/INTP0 | External interrupt | Dedicated interrupt pin (INTP0) with priority control - guarantees low-latency response to critical events |
| VDD | Power supply | Single 1.8–5.5 V supply rail - eliminates need for external regulators in wide-input applications |
| VSS | Ground | Common reference for analog/digital domains - ensures noise isolation between signal paths |
Key Features
| Feature | Design Value |
|---|---|
| Data Flash with BGO | 2 KB data flash supports background rewriting while executing code - enables seamless firmware updates and parameter logging |
| Ultra-Low-Power Modes | HALT, STOP, and SNOOZE modes achieve sub-μA standby - extends battery life in portable and IoT edge nodes |
| On-Chip Safety Functions | CRC calculation unit, RAM guard, and SFR guard - satisfies IEC 61508 SIL2 functional safety requirements |
| High-Accuracy Oscillator | ±1.0% frequency accuracy over -20°C to +85°C - eliminates external crystal for cost-sensitive timing-critical applications |
| Flexible I/O Configuration | 18 I/O pins with N-ch open-drain (6 V tolerant), TTL input, and on-chip pull-up - simplifies level-shifting and reduces BOM count |
| Dual Serial Interface Set | 2× CSI + 2× simplified I²C - enables simultaneous communication with SPI sensors and I²C peripherals without software bit-banging |
Applications
| Smart Home Sensor Hub | Industrial Motor Controller |
|---|---|
Use Scenario: Central node aggregating temperature, humidity, and motion data from multiple analog and digital sensors. IC Role / Device Role / Timing Role: Main MCU managing ADC sampling, I²C sensor polling, UART telemetry upload, and low-power sleep scheduling. Use Value: Integrated 11-channel 10-bit ADC, dual I²C/CSI interfaces, and 2 KB data flash enable local data buffering and autonomous wake-up - reducing host processor load and cloud bandwidth. |
Use Scenario: Closed-loop speed and current control for BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time controller executing PID algorithms, generating PWM gate signals, and monitoring fault conditions via analog inputs. Use Value: Four 16-bit timer channels with PWM output, 10-bit ADC for current sensing, and ±1.0% oscillator accuracy ensure precise motor timing and stable commutation without external timing components. |
| Portable Medical Monitor | Energy-Efficient Smart Meter |
Use Scenario: Battery-powered pulse oximeter or blood glucose meter requiring long runtime and clinical-grade signal fidelity. IC Role / Device Role / Timing Role: Signal acquisition MCU performing analog front-end conditioning, ADC conversion, and BLE interface management. Use Value: Ultra-low 63 μA/MHz active current, on-chip temperature sensor for calibration compensation, and 1.45 V internal reference deliver stable measurements across battery discharge cycles. |
Use Scenario: Residential electricity meter with tamper detection, load profiling, and secure firmware update capability. IC Role / Device Role / Timing Role: Secure metering controller handling metrology calculations, EEPROM emulation via data flash, and encrypted OTA updates. Use Value: 2 KB data flash with 1M rewrite endurance enables reliable parameter storage and firmware patching; CRC engine validates memory integrity during power transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASP#35 | 12 KB code flash, same 2 KB data flash, identical pinout and peripherals | Higher firmware headroom for complex protocol stacks or larger GUI frameworks | Select when future firmware expansion or bootloader+application separation is required |
| R5F10267ASP#35 | 4 KB code flash, 2 KB data flash, 256 B RAM - reduced memory and no self-programming library support | Cost-optimized implementation where code size < 4 KB and field updates are not needed | Choose for fixed-function devices with static firmware and minimal memory footprint |
Compared with R5F10269ASP#35 and R5F10267ASP#35, the R5F10268ASP#35 delivers optimal balance of code density (8 KB), data retention capability (2 KB BGO-enabled flash), and peripheral richness - making it ideal for mid-complexity embedded systems requiring upgradeability without over-provisioning.
Availability
R5F10268ASP#35 is available at Aetrix Electronics and suitable for smart home sensor hubs, industrial motor controllers, portable medical monitors, and energy-efficient smart meters requiring stable component supply and long-term lifecycle support.
Supply support for R5F10268ASP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and functionally safe general-purpose applications - emphasizing energy efficiency, integrated peripherals, and development simplicity.
FAQ
What is the maximum operating frequency and corresponding DMIPS performance of the R5F10268ASP#35?
The R5F10268ASP#35 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS at that frequency. Its minimum instruction execution time is 0.04167 μs under high-speed oscillator conditions, enabling deterministic real-time response for time-critical control loops and sensor processing tasks within the R5F10268ASP#35's architecture.
Does the R5F10268ASP#35 support background data flash rewriting while executing application code?
Yes, the R5F10268ASP#35 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the R5F10268ASP#35 to execute instructions from program memory while simultaneously rewriting data flash - essential for logging sensor history or storing configuration parameters without interrupting real-time operation.
What are the key differences between the R5F10268ASP#35 and the R5F10368ASP#35?
The R5F10268ASP#35 includes 2 KB data flash, CRC calculation unit, RAM/SFR guard, and two CSI/simplified I²C channels - features absent in the R5F10368ASP#35. The R5F10368ASP#35 lacks data flash and safety peripherals but offers identical code flash (8 KB) and core performance. These distinctions make the R5F10268ASP#35 suitable for applications requiring nonvolatile parameter storage and functional safety compliance.
What is the guaranteed oscillator accuracy of the R5F10268ASP#35 over its full operating temperature range?
The R5F10268ASP#35's high-speed on-chip oscillator achieves ±1.0% accuracy over TA = -20°C to +85°C, ±1.5% from -40°C to -20°C, and ±2.0% from +85°C to +105°C. As an A-grade part rated for -40°C to +85°C, the R5F10268ASP#35 is specified at ±1.0% across its full commercial temperature range - eliminating need for external crystals in many timing applications.
How many analog input channels does the R5F10268ASP#35 support, and what is its ADC resolution?
The R5F10268ASP#35 integrates a 10-bit successive approximation ADC with 11 input channels (ANI0–ANI3, ANI16–ANI22) and an internal 1.45 V reference voltage. It also includes an on-chip temperature sensor and supports differential measurement using AVREFP/AVREFM pins - providing calibrated analog sensing capability directly within the R5F10268ASP#35 without external components.
R5F10268ASP#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:
- 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:
R5F10268ASP#35 FAQ
1.How can I place an order for R5F10268ASP#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10268ASP#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 R5F10268ASP#35 reliable?
The price and inventory of R5F10268ASP#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10268ASP#35 is usually 5 days.
3.What payment methods are accepted for R5F10268ASP#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10268ASP#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10268ASP#35?
R5F10268ASP#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10268ASP#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 R5F10268ASP#35?
For technical support, including R5F10268ASP#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10268ASP#35 requirements.
6.How does Aetrix verify that R5F10268ASP#35 is sourced from the original manufacturer or authorized distributors?
All R5F10268ASP#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 R5F10268ASP#35 meets industry standards.
7.What is the process for return or replacement of R5F10268ASP#35?
All R5F10268ASP#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10268ASP#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 R5F10268ASP#35 part is unused and in its original packaging.
Return procedure for R5F10268ASP#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10268ASP#35 Tags
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