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Renesas R5F10366ASM#55
- Part No.:
- R5F10366ASM#55
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10366ASM#55.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
R5F10366ASM#55 from Renesas Electronics is a 20-pin RL78/G12 16-bit microcontroller with 2 KB code flash, 256 B RAM, and no data flash memory, operating at 1.8–5.5 V across –40°C to +85°C. It features a 24 MHz high-speed on-chip oscillator (±5% accuracy), 10-bit 8-channel ADC, 4-channel 16-bit timer, UART, and simplified SPI (CSI) for embedded control in space-constrained consumer applications.
For engineers reviewing the R5F10366ASM#55 datasheet, R5F10366ASM#55 pinout, R5F10366ASM#55 application, or R5F10366ASM#55 equivalent, this MCU delivers verified low-power operation (63 μA/MHz), TSSOP20 packaging, and confirmed peripheral set including key interrupt, on-chip debug, and programmable clock/buzzer output - critical for battery-powered sensor nodes and appliance control designs.
Technical Context
The R5F10366ASM#55 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports HALT, STOP, and SNOOZE low-power modes, and executes instructions in 0.04167 μs minimum (at 24 MHz on-chip oscillator).
Its peripheral complement includes one UART channel, one simplified SPI (CSI) channel, no I²C interface, no DMA controller, and no CRC or RAM/SFR guard functions - distinguishing it from R5F102-series variants and confirming its role as a cost-optimized, entry-level general-purpose MCU for non-safety-critical 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-powered operation |
| Flash / RAM | 2 KB code flash (no data flash); 256 B RAM - sufficient for small firmware with minimal variable storage |
| ADC | 10-bit resolution, 8 input channels, internal 1.45 V reference - supports analog sensing without external reference |
| Timers | 4-channel 16-bit timer (TAU0), 1-channel 12-bit interval timer, 1-channel watchdog - enables PWM generation, periodic interrupts, and system supervision |
| Serial Interfaces | 1 UART channel, 1 simplified SPI (CSI) channel, 0 I²C channels - provides basic host communication and sensor interfacing |
| Package & Pins | TSSOP20 (4.4 × 6.5 mm, 0.65 mm pitch), 18 I/O pins including 2 N-ch open-drain (6 V tolerant) |
Pinout & Package
Package: 20-pin plastic TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 1.8–5.5 V supply rail; decoupling capacitor required near pin |
| VSS | Ground | Digital ground reference; must be connected to system GND plane |
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Multi-function port pin | Configurable as serial clock (SPI/I²C), buzzer output, or analog input - shared resource requiring software configuration |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Multi-function port pin | Supports SPI data-in, UART receive, I²C data, or debug receive - enables flexible peripheral mapping |
| P12/ANI18/SO00/TxD0/TOOLTxD | Multi-function port pin | Provides SPI data-out, UART transmit, or debug transmit - essential for serial communication and programming |
| P13/ANI19/TI00/TO00/INTP2 | Multi-function port pin | Timer input/output and external interrupt - used for pulse capture, PWM output, or event triggering |
| P14/ANI20/TI01/TO01/INTP3 | Multi-function port pin | Second timer I/O and interrupt - extends timing capability for dual-channel control |
| P20/ANI0/AVREFP | Analog reference + | Positive analog reference voltage input; connects to internal A/D converter reference |
| P21/ANI1/AVREFM | Analog reference − | Negative analog reference voltage input; establishes differential reference for precision measurement |
| P40/KR0/TOOL0 | Debug interface / key return | Primary debug I/O for on-chip programming and emulation; also supports keypad scanning |
| P125/KR1/SI01/RESET | Reset input | Active-low reset pin; also serves as SPI data-in and key return - requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >1-year battery life in coin-cell powered devices |
| On-chip high-speed oscillator | 24 MHz ±5% accuracy eliminates need for external crystal in cost-sensitive applications |
| Programmable clock/buzzer output | PCLBUZ0 pin generates precise 2.44 kHz–10 MHz tones for audible alerts or clock distribution |
| On-chip debug function | Full in-circuit debugging via TOOL0/TOOLRxD/TOOLTxD pins - reduces development cycle time |
| Different-potential interface | I/O pins tolerate 1.8/2.5/3.3 V logic levels - simplifies interconnection with mixed-voltage peripherals |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in compact washing machine control panel managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor control algorithms and reading 8-channel analog sensors (temperature, pressure, current). Use Value: 2 KB flash accommodates closed-loop PID firmware; 10-bit ADC resolves sensor signals to <±0.1% full scale; TSSOP20 footprint fits tight PCB layouts. |
Use Scenario: Battery-powered environmental monitor deployed in factory HVAC ducts measuring temperature, humidity, and air quality. IC Role / Device Role / Timing Role: Low-power data acquisition node sampling sensors every 10 seconds and transmitting via UART to gateway. Use Value: 63 μA/MHz active current and STOP mode extend 2xAA battery life beyond 2 years; UART interface enables direct RS-485 connectivity. |
| Smart Lighting Driver | Consumer IoT Remote |
Use Scenario: LED driver IC in dimmable smart bulb controlling constant-current output and interpreting DALI commands. IC Role / Device Role / Timing Role: System-on-chip managing PWM dimming, thermal protection, and DALI physical layer via UART. Use Value: 4-channel 16-bit timer generates precise PWM waveforms; 1.8–5.5 V operation matches wide-input buck converter output; 20-pin TSSOP eases thermal management. |
Use Scenario: IR remote control with touch keypad and RF transmission for home entertainment systems. IC Role / Device Role / Timing Role: Keypad scanner and IR carrier generator using PCLBUZ0 for 38 kHz modulation and KR0–KR5 for matrix scanning. Use Value: On-chip key interrupt detects button presses with zero CPU overhead; 24 MHz oscillator ensures accurate IR carrier frequency; 18 GPIO support full 4×4 keypad + status LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10266ASM#55 | Includes 2 KB data flash and DMA; same 2 KB code flash, 256 B RAM, TSSOP20 package | Required where background data logging or peripheral-to-memory transfers are needed | Select when non-volatile parameter storage or burst data handling is mandatory |
| R5F10368ASM#55 | 4 KB code flash, same RAM, no data flash, identical peripherals and package | Suitable for larger firmware images requiring >2 KB program space | Choose when bootloader, communication stack, or expanded feature set exceeds 2 KB capacity |
Compared with R5F10366ASM#55, R5F10266ASM#55 adds data flash and DMA for embedded data logging but increases cost and power; R5F10368ASM#55 doubles code flash for complex firmware while retaining identical low-power behavior and pin compatibility.
Availability
R5F10366ASM#55 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, smart lighting drivers, and consumer IoT remotes requiring stable component supply and long-term production continuity.
Supply support for R5F10366ASM#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G12 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and space-constrained general-purpose embedded applications - with R5F10366ASM#55 targeting entry-level control tasks.
FAQ
What is the maximum operating frequency of the R5F10366ASM#55?
The R5F10366ASM#55 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. This frequency is achievable across the full 1.8–5.5 V supply range and –40°C to +85°C ambient temperature, delivering 31 DMIPS performance. External crystal operation is limited to 20 MHz maximum per datasheet specifications.
Does the R5F10366ASM#55 include data flash memory?
No, the R5F10366ASM#55 does not include data flash memory. As confirmed in the RL78/G12 datasheet Section 1.3.1, R5F103-series products - including R5F10366ASM#55 - omit the 2 KB data flash found in R5F102-series variants. Firmware must use code flash for parameter storage or rely on external EEPROM.
What serial interfaces are supported by the R5F10366ASM#55?
The R5F10366ASM#55 supports one UART channel and one simplified SPI (CSI) channel. It does not include any I²C interface - unlike R5F1026x variants which offer two simplified I²C channels. This limitation is explicitly documented in Table 1-1 and Section 1.3.3 of the RL78/G12 datasheet.
Is the R5F10366ASM#55 pin-compatible with other RL78/G12 TSSOP20 variants?
Yes, the R5F10366ASM#55 shares identical pinout and package (PTSP0020JI-A) with all other 20-pin RL78/G12 TSSOP variants, including R5F10266ASM#55 and R5F10368ASM#55. Pin functions match per the 20-pin top-view diagram in Section 1.4.1, enabling drop-in replacement where peripheral requirements align.
What is the guaranteed operating temperature range for the R5F10366ASM#55?
The R5F10366ASM#55 is rated for operation from –40°C to +85°C, corresponding to the "A" (consumer applications) and "D" (industrial applications) temperature grades. It is not qualified for the extended –40°C to +105°C ("G") grade, as confirmed in Section 1.1 and Table 1-1 of the RL78/G12 datasheet.
R5F10366ASM#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:
- LVD, POR, PWM, WDT
- Number of I/O:
- 14
- Program Memory Size:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
R5F10366ASM#55 FAQ
1.How can I place an order for R5F10366ASM#55 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10366ASM#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 R5F10366ASM#55 reliable?
The price and inventory of R5F10366ASM#55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10366ASM#55 is usually 5 days.
3.What payment methods are accepted for R5F10366ASM#55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10366ASM#55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10366ASM#55?
R5F10366ASM#55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10366ASM#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 R5F10366ASM#55?
For technical support, including R5F10366ASM#55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10366ASM#55 requirements.
6.How does Aetrix verify that R5F10366ASM#55 is sourced from the original manufacturer or authorized distributors?
All R5F10366ASM#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 R5F10366ASM#55 meets industry standards.
7.What is the process for return or replacement of R5F10366ASM#55?
All R5F10366ASM#55 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10366ASM#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 R5F10366ASM#55 part is unused and in its original packaging.
Return procedure for R5F10366ASM#55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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