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Renesas R5F10269ASM#35
- Part No.:
- R5F10269ASM#35
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10269ASM#35.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,800
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Product details
Overview
R5F10269ASM#35 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 12 KB code flash, 2 KB data flash, and 768 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, UART, 4-channel 16-bit TAU timer, and on-chip CRC for industrial sensor nodes and battery-powered control systems.
For engineers reviewing the R5F10269ASM#35 datasheet, R5F10269ASM#35 pinout, R5F10269ASM#35 application, or R5F10269ASM#35 equivalent, this page delivers verified technical context, package mapping to TSSOP20, real-world use cases in low-voltage sensing and embedded control, and two validated alternative parts with documented functional differences.
Technical Context
The R5F10269ASM#35 implements the RL78 CISC CPU core with 3-stage 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 12 KB code flash (1 KB block size), 2 KB data flash with background operation (BGO) and 1M rewrite cycles, and 768 B RAM - all accessible within a 1 MB address space.
Peripherals include dual simplified SPI (CSI) channels, dual simplified I²C (IIC00/IIC01), one UART channel, 11-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, and safety features including CRC calculation unit, RAM guard, and SFR guard - all enabled in the R5F102 product line but absent in R5F103 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing-critical firmware execution |
| Max Operating Frequency | 24 MHz via high-speed on-chip oscillator (±1.0% accuracy, -20 to +85°C); eliminates external crystal for cost-sensitive designs |
| Memory Configuration | 12 KB code flash + 2 KB data flash + 768 B RAM; supports self-programming and BGO for field firmware updates without halting operation |
| Analog Peripherals | 10-bit 11-channel ADC with internal 1.45 V reference and integrated temperature sensor; enables direct thermal monitoring and analog signal acquisition |
| Serial Interfaces | 2 × CSI (SPI-compatible), 2 × simplified I²C, 1 × UART; provides flexible multi-protocol connectivity to sensors, displays, and host controllers |
| Power Efficiency | 63 μA/MHz active current; HALT/STOP/SNOOZE modes reduce power to sub-μA levels for battery life extension |
| Operating Voltage | 1.8–5.5 V single supply; supports direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V peripherals without level shifters |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65-mm pitch, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer Output / CSI00 Clock / IIC00 Clock | Multi-function pin enabling clock generation, SPI/I²C master/slave, or analog sensing - configurable via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / CSI00 Data In / UART0 Receive / IIC00 Data / Debug RX | Shared UART/I²C/CSI input with debug interface support; allows in-system programming and runtime diagnostics |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / CSI00 Data Out / UART0 Transmit / Debug TX | Dual-role output for communication and debugging; eliminates need for separate debug header in compact layouts |
| 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; supports PWM generation, pulse counting, and event timing |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Second independent timer channel for synchronized dual-signal processing or motor phase control |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / ADC Positive Reference | Configurable as ADC reference voltage source or analog input; enables ratiometric measurements with external sensors |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / ADC Negative Reference | Provides differential ADC reference pair; improves noise immunity in noisy industrial environments |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input with internal sampling capacitor; supports 11-channel simultaneous sampling sequence |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Final dedicated analog input in 20-pin variant; completes full 4-channel analog front-end for multi-sensor systems |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug Interface | Supports key matrix scanning and debug communication; reduces BOM count in human-interface applications |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / CSI01 Data Out / IIC01 Data / Timer Input 2 / Timer Output 2 / Interrupt 1 | High-density peripheral multiplexing: enables second SPI/I²C bus while retaining timer and interrupt functionality |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / CSI01 Clock / IIC01 Clock / Timer Input 3 / Timer Output 3 | Completes second CSI/I²C interface with hardware timer sync; supports dual-sensor synchronization (e.g., IMU + temp) |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / IIC00 Clock / UART0 Transmit (remappable) | I²C clock with key return function; allows shared pin usage in space-constrained designs without sacrificing I²C integrity |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / IIC00 Data / UART0 Receive (remappable) | I²C data line with key return; enables mixed-signal control of mechanical switches and digital buses |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input 3 / Interrupt 3 | Crystal oscillator input with fallback timer/interrupt function; ensures system timing continuity during crystal fault |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock Input / Timer Input 2 / Interrupt 2 | Crystal output with external clock option; supports precision timing from external sources when crystal unavailable |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / CSI01 Data In / Reset Input | Hardware reset with key return and SPI input; enables single-pin recovery from lockup and keypad wake-up |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin with fast wake-up (<1 µs); critical for real-time response to safety-critical events |
| VDD | Power Supply | Single 1.8–5.5 V supply; powers entire core, peripherals, and I/O - no auxiliary rails required |
| VSS | Ground | Digital ground reference; must be connected to PCB ground plane with low-impedance path for ADC stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 63 μA/MHz active current + STOP mode down to 0.52 μA; extends battery life in portable medical and sensor devices |
| Data flash with BGO | 2 KB data flash supporting background rewriting during program execution; enables seamless over-the-air firmware updates |
| On-chip CRC accelerator | Hardware CRC-16/32 engine; offloads checksum computation from CPU, reducing latency in secure boot and data logging |
| RAM and SFR guard | Dedicated memory protection units prevent accidental overwrite of critical variables and registers; enhances reliability in industrial control |
| Multi-protocol serial stack | 2 × CSI + 2 × simplified I²C + 1 × UART on 20 pins; eliminates external protocol translators in multi-sensor gateway designs |
| Temperature sensor integration | On-die temperature sensor with ±2°C accuracy; enables thermal derating and ambient compensation without external components |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered wireless temperature/humidity/pressure node transmitting data via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, sensor fusion, low-power scheduling, and UART packet framing. Use Value: 63 μA/MHz active current and STOP mode enable >5-year battery life; integrated 10-bit ADC and temperature sensor eliminate external signal conditioning. |
Use Scenario: HVAC wall-mounted thermostat with LCD, push buttons, and relay drivers for zone control. IC Role / Device Role / Timing Role: Central MCU handling key scan, display refresh, PID loop execution, and relay timing via TAU PWM outputs. Use Value: 4-channel 16-bit TAU with PWM and 6-key return inputs reduce external logic; 1.8–5.5 V operation supports direct alkaline battery input. |
| Programmable Power Monitor | Embedded Motor Starter |
|
Use Scenario: DIN-rail mounted AC power meter with current/voltage sensing, energy calculation, and RS-485 communication. IC Role / Device Role / Timing Role: Real-time data acquisition engine performing RMS calculations, harmonic analysis, and Modbus RTU framing. Use Value: Dual CSI interfaces connect isolated ADCs; 2 KB data flash stores calibration coefficients and event logs with BGO for zero-interrupt updates. |
Use Scenario: Single-phase motor soft-starter with current limiting, ramp control, and thermal shutdown. IC Role / Device Role / Timing Role: Safety-critical timing controller generating precise gate drive signals and monitoring overcurrent via analog comparator inputs. Use Value: RAM guard and SFR guard prevent corruption during EMI events; CRC unit validates firmware integrity before each startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10268ASM#35 | 8 KB code flash, 2 KB data flash, 512 B RAM - reduced memory footprint | Suitable for simpler control tasks without extensive data logging or complex UI stacks | Select when firmware size < 8 KB and BGO-based data storage requirements are unchanged |
| R5F10267ASM#35 | 2 KB code flash, 2 KB data flash, 256 B RAM - minimal configuration with same peripheral set | Targeted at ultra-low-cost, fixed-function devices like basic timers or LED controllers | Choose for cost-sensitive volume production where code size is strictly bounded and RAM usage is minimal |
Compared with R5F10269ASM#35, R5F10268ASM#35 offers 33% less code flash but identical data flash and peripherals - ideal for trimmed firmware; R5F10267ASM#35 sacrifices 83% code capacity and 67% RAM for lowest bill-of-materials, retaining only essential timing and communication functions.
Availability
R5F10269ASM#35 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostats, programmable power monitors, and embedded motor starters requiring stable component supply across automotive-grade temperature ranges and long lifecycle commitments.
Supply support for R5F10269ASM#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of microcontroller innovation.
The RL78/G12 family was designed specifically for ultra-low-power general-purpose embedded control - balancing performance, peripheral richness, and energy efficiency in compact 20–30 pin packages for cost-sensitive industrial and consumer applications.
FAQ
What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F10269ASM#35?
The R5F10269ASM#35 features a high-speed on-chip oscillator adjustable from 1 MHz to 24 MHz, with ±1.0% accuracy over –20 to +85°C ambient. This specification applies specifically to R5F102-series parts like the R5F10269ASM#35 and enables crystal-free operation in applications where timing tolerance permits. The oscillator supports dynamic switching between frequencies during runtime for power optimization.
Does R5F10269ASM#35 support background data flash rewriting while executing code from main flash?
Yes, the R5F10269ASM#35 supports Background Operation (BGO) for its 2 KB data flash memory. This allows the CPU to execute instructions from code flash while simultaneously erasing or programming data flash sectors - critical for maintaining real-time responsiveness during firmware updates or parameter logging. BGO is confirmed in the RL78/G12 datasheet and applies directly to the R5F10269ASM#35 variant.
How many analog input channels does R5F10269ASM#35 provide, and what is the ADC resolution?
The R5F10269ASM#35 integrates a 10-bit successive-approximation ADC with 11 input channels (ANI0–ANI3, ANI16–ANI22), plus internal reference voltage (1.45 V) and on-die temperature sensor. All 11 channels are accessible in the 20-pin TSSOP package, with dedicated pins P20–P23 and P41–P42 assigned to analog functions - confirmed in the pin configuration diagram for R5F1026x 20-pin products.
What safety features are included in R5F10269ASM#35 that distinguish it from R5F103-series MCUs?
The R5F10269ASM#35 includes CRC calculation unit, RAM guard, and SFR guard - safety features explicitly documented as present in R5F102 products and absent in R5F103 variants. These protect against memory corruption and unauthorized register access, making the R5F10269ASM#35 suitable for industrial control applications requiring functional safety compliance beyond basic operation.
What is the operating voltage range and temperature grade of R5F10269ASM#35?
The R5F10269ASM#35 operates from 1.8 V to 5.5 V over an industrial temperature range of –40°C to +85°C ('A' grade). Its packaging (#35 suffix) indicates tray or tube delivery for TSSOP20, and the device meets Renesas' specifications for consumer and industrial applications under these conditions - confirmed in the RL78/G12 datasheet section 1.2 and Table 1-1.
R5F10269ASM#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:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1K 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:
R5F10269ASM#35 FAQ
1.How can I place an order for R5F10269ASM#35 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10269ASM#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 R5F10269ASM#35 reliable?
The price and inventory of R5F10269ASM#35 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10269ASM#35 is usually 5 days.
3.What payment methods are accepted for R5F10269ASM#35?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10269ASM#35 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10269ASM#35?
R5F10269ASM#35 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10269ASM#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 R5F10269ASM#35?
For technical support, including R5F10269ASM#35 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10269ASM#35 requirements.
6.How does Aetrix verify that R5F10269ASM#35 is sourced from the original manufacturer or authorized distributors?
All R5F10269ASM#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 R5F10269ASM#35 meets industry standards.
7.What is the process for return or replacement of R5F10269ASM#35?
All R5F10269ASM#35 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10269ASM#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 R5F10269ASM#35 part is unused and in its original packaging.
Return procedure for R5F10269ASM#35:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10269ASM#35 Tags
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