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Renesas R5F10268ASM#35
- Part No.:
- R5F10268ASM#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10268ASM#35.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,825
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Product details
Overview
R5F10268ASM#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 control and battery-powered industrial monitoring.
For engineers reviewing the R5F10268ASM#35 datasheet, R5F10268ASM#35 pinout, R5F10268ASM#35 application, or R5F10268ASM#35 equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing and power parameters directly applicable to embedded firmware development and low-voltage system integration.
Technical Context
The R5F10268ASM#35 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting instruction execution times from 0.04167 μs (@24 MHz high-speed on-chip oscillator) to 1 μs (@1 MHz). Its memory subsystem includes 8 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO), and 512 B RAM-enabling secure self-programming and real-time data logging without halting execution.
Peripheral architecture features two CSI channels, two simplified I²C channels, one UART, four 16-bit timer channels, a 12-bit interval timer, watchdog timer, and CRC hardware accelerator-all accessible via 18 I/O pins including 2× 6-V-tolerant N-ch open-drain outputs and key interrupt support for human-interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| 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 |
| Flash Memory | 8 KB code flash + 2 KB data flash - supports secure block erase prohibition and BGO for concurrent program/data updates |
| Performance | 31 DMIPS @ 24 MHz - sufficient for real-time sensor fusion and motor control loops in compact systems |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference - eliminates external voltage reference for analog sensing |
| Power Efficiency | 63 μA/MHz active current - reduces average power in duty-cycled IoT endpoints and portable devices |
| Temperature Range | −40 °C to +85 °C (A-grade) - qualified for consumer and industrial ambient environments |
Pinout & Package
TSSOP20 package (4.4 × 6.5 mm, 0.65-mm pitch), JEDEC MS-013AC compliant, with exposed pad not present. Pin functions validated per Renesas R01DS0193EJ0250 Rev.2.50, Figure 1-1 and Section 1.4.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer Output / CSI00 Clock / I²C00 Clock | Multi-function pin enabling synchronous serial communication or precision timing output without external components |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / CSI00 Data In / UART0 RX / I²C00 Data / Debug RX | Shared serial receive path supports tooling, host communication, and sensor interface on single pin |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / CSI00 Data Out / UART0 TX / Debug TX | Enables full-duplex UART/CSI while retaining analog sensing capability via software-configurable function select |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / External Interrupt 2 | Hardware timer capture/compare and interrupt trigger co-located for precise edge detection and PWM generation |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / External Interrupt 3 | Dual timer channel with interrupt capability supports quadrature decoding or dual-phase motor control |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / ADC Positive Reference | Provides dedicated AVREFP input for ratiometric sensor measurements independent of VDD fluctuations |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / ADC Negative Reference | Enables true differential ADC measurement when paired with P20, improving noise immunity in noisy environments |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | General-purpose analog input with internal pull-up/pull-down and TTL buffer options for flexible sensor interfacing |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog channel supporting temperature sensor or battery voltage monitoring with internal reference |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Supports both key matrix scanning and in-circuit debug communication using same physical 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 | High-density peripheral multiplexing allows simultaneous use of I²C slave, timer capture, and analog sensing |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / CSI01 Clock / I²C01 Clock / Timer Input 3 / Timer Output 3 | Enables second synchronous serial interface with hardware timer synchronization for coordinated sensor polling |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C00 Clock / UART0 TX (remapped) | Remappable UART TX allows flexible PCB routing when primary TxD0 conflicts with layout constraints |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C00 Data / UART0 RX (remapped) | Remappable UART RX supports dual UART configuration or I²C master/slave mode without pin count penalty |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Oscillator Input / Timer Input 3 / Interrupt 3 | Crystal input doubles as timer input or interrupt source - enables clock domain switching or wake-on-event |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Oscillator Output / External Clock Input / Timer Input 2 / Interrupt 2 | Supports crystal, external clock, or timer input - critical for fail-safe clock source selection in safety-critical designs |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / CSI01 Data In / Reset Input | Hardware reset input with key return and serial data functionality - simplifies board-level reset circuitry |
| VDD | Power Supply | Single 1.8–5.5 V supply powers entire core, peripherals, and I/O - eliminates need for multiple regulators |
| VSS | Ground | Dedicated ground reference for analog and digital domains - ensures stable ADC performance and noise margin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Reduces current to sub-μA levels during idle periods - extends battery life in wireless sensors and wearables |
| On-chip 2 KB data flash with BGO | Allows firmware to log sensor data or update calibration tables while executing application code - no CPU stall required |
| 2-channel DMA controller | Transfers ADC results or UART buffers directly to RAM in 2 clock cycles - frees CPU for computation-intensive tasks |
| Hardware CRC accelerator | Performs error-checking on firmware updates or sensor packets in one instruction - improves data integrity without software overhead |
| 10-bit 11-channel ADC with internal reference | Delivers ±1 LSB INL across full temperature range - eliminates external reference IC and reduces BOM cost |
| Programmable clock/buzzer output (PCLBUZ0) | Generates precise 2.44 kHz–10 MHz tones or clock signals - replaces external oscillator in audio feedback or clock distribution |
Applications
| Smart Home Sensor Node | Industrial Motor Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity/occupancy sensor with BLE gateway interface. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, sensor fusion, low-power sleep scheduling, and UART-to-BLE bridge timing. Use Value: 63 μA/MHz active current and SNOOZE mode extend 2-AA battery life beyond 2 years; 11-channel ADC supports multi-sensor integration without external MUX. |
Use Scenario: Compact 3-phase BLDC motor driver with hall-effect feedback and thermal protection. IC Role / Device Role / Timing Role: Real-time motor commutation controller using timer PWM outputs, ADC current sensing, and fault-triggered STOP mode entry. Use Value: Four 16-bit timer channels provide independent PWM generation for three phases plus dead-time control; 2 KB data flash stores motor calibration profiles across lifetime. |
| Medical Wearable Monitor | Automotive Body Control Module |
Use Scenario: ECG/PPG patch with analog front-end, motion compensation, and USB charging interface. IC Role / Device Role / Timing Role: Signal acquisition processor handling analog sensor conditioning, digital filtering, and USB protocol timing via UART remapping. Use Value: Differential ADC inputs (P20/P21) reject common-mode noise from body coupling; on-chip 1.45 V reference ensures consistent gain across battery discharge cycle. |
Use Scenario: Door lock actuator module with LIN bus interface, position sensing, and overcurrent protection. IC Role / Device Role / Timing Role: LIN transceiver controller managing frame timing, GPIO-driven solenoid drive, and ADC-based current monitoring. Use Value: UART remapping (P60/P61) enables LIN physical layer compliance; 6-V-tolerant I/O pins interface directly with 12 V automotive power domains without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10269ASM#35 | Same package and pinout; 12 KB code flash + 2 KB data flash vs. 8 KB + 2 KB | Requires larger firmware image; suitable for applications needing bootloader + application partitioning | Select when firmware size exceeds 8 KB or future-proofing against feature expansion is required |
| R5F10267ASM#35 | Same package and pinout; 4 KB code flash + 2 KB data flash vs. 8 KB + 2 KB; 256 B RAM vs. 512 B | Lower memory footprint; limited stack depth for complex RTOS usage | Select for cost-sensitive, fixed-function applications with minimal firmware complexity and no dynamic allocation |
Compared with R5F10269ASM#35 and R5F10267ASM#35, the R5F10268ASM#35 provides optimal balance of code density, data logging capacity, and RAM headroom for mid-complexity embedded control - avoiding flash over-provisioning while sustaining real-time task scheduling and sensor buffering.
Availability
R5F10268ASM#35 is available at Aetrix Electronics and suitable for smart home sensor nodes, industrial motor controllers, medical wearable monitors, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for R5F10268ASM#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 industrial, automotive, and enterprise markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally constrained embedded systems requiring integrated analog, timing, and communication peripherals.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F10268ASM#35?
The R5F10268ASM#35 achieves a maximum operating frequency of 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) and reflects actual measured integer throughput under standard test conditions - not theoretical peak values.
Does the R5F10268ASM#35 include data flash memory, and what is its endurance specification?
Yes, the R5F10268ASM#35 includes 2 KB of on-chip data flash memory with a rated endurance of 1,000,000 write/erase cycles (typical), supporting background operation (BGO) for concurrent execution and data updates. This is explicitly stated in the RL78/G12 datasheet Section 1.1 Features and Table 1-1 memory mapping.
What package type and pin count does the R5F10268ASM#35 use, and is it RoHS compliant?
The R5F10268ASM#35 uses a 20-pin TSSOP package (4.4 × 6.5 mm, 0.65-mm pitch), identified by the "SM" suffix in its part number. It is RoHS compliant and lead-free, as confirmed in Renesas' official packaging documentation (PLSP0020JI-A package outline and environmental compliance statements).
How many analog input channels does the R5F10268ASM#35 support, and what is the ADC resolution?
The R5F10268ASM#35 supports 11 analog input channels with a 10-bit resolution ADC, including dedicated AVREFP and AVREFM pins for differential measurement. This is documented in Section 1.1 Features and Figure 1-1 of the RL78/G12 datasheet (R01DS0193EJ0250 Rev.2.50).
Is the R5F10268ASM#35 pin-compatible with other RL78/G12 variants in the same package?
Yes, the R5F10268ASM#35 shares identical pinout and package dimensions with all other 20-pin TSSOP RL78/G12 devices (e.g., R5F10267ASM#35, R5F10269ASM#35), enabling drop-in replacement within the same memory variant family - provided firmware accommodates differences in flash/RAM size and peripheral enablement.
R5F10268ASM#35 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10268ASM#35 FAQ
1.How can I place an order for R5F10268ASM#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10268ASM#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 R5F10268ASM#35 reliable?
The price and inventory of R5F10268ASM#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10268ASM#35 is usually 5 days.
3.What payment methods are accepted for R5F10268ASM#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10268ASM#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10268ASM#35?
R5F10268ASM#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10268ASM#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 R5F10268ASM#35?
For technical support, including R5F10268ASM#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10268ASM#35 requirements.
6.How does Aetrix verify that R5F10268ASM#35 is sourced from the original manufacturer or authorized distributors?
All R5F10268ASM#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 R5F10268ASM#35 meets industry standards.
7.What is the process for return or replacement of R5F10268ASM#35?
All R5F10268ASM#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10268ASM#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 R5F10268ASM#35 part is unused and in its original packaging.
Return procedure for R5F10268ASM#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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