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Renesas R5F10366ASM#75
- Part No.:
- R5F10366ASM#75
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10366ASM#75.pdf
- Description:
- 16-BIT GENERAL MCU RL78/G12 2K 2
- Quantity:
- Payment:
- Shipping:
Inventory:1,256
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Product details
Overview
R5F10366ASM#75 from Renesas Electronics is a 20-pin, TSSOP-packaged RL78/G12 16-bit microcontroller designed for ultra-low-power embedded control in consumer-grade applications (–40°C to +85°C). It features 2 KB code flash, 256 B RAM, 10-bit A/D converter with 8 input channels, 4-channel 16-bit timer, and single UART interface - enabling compact sensor node and battery-powered appliance control.
For engineers reviewing the R5F10366ASM#75 datasheet, R5F10366ASM#75 pinout, R5F10366ASM#75 application, or R5F10366ASM#75 equivalent, key selection criteria include its 1.8–5.5 V operation, absence of data flash memory, lack of DMA and safety functions (CRC/SFR guard), and confirmed 20-pin TSSOP (PTSP0020JI-A) package with 0.65-mm pitch.
Technical Context
The R5F10366ASM#75 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz while consuming only 63 μA/MHz. Its instruction execution time ranges from 0.04167 μs (24 MHz on-chip oscillator) to 1 μs (1 MHz), supporting flexible power/performance trade-offs in HALT, STOP, and SNOOZE low-power modes.
It integrates a high-speed on-chip oscillator (1–24 MHz, ±5.0% accuracy over –40°C to +85°C), 12-bit interval timer, watchdog timer, on-chip voltage detector (12-level LVD), and programmable clock/buzzer output - all operating within a single 1.8–5.5 V supply without external regulators or crystals required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space |
| Operating Voltage | 1.8 V to 5.5 V - enables direct Li-ion, AA/AAA, or USB-powered designs without level-shifting |
| Flash / RAM | 2 KB code flash, 256 B RAM - sufficient for small firmware images with minimal runtime variables |
| A/D Converter | 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-window watchdog - provides PWM, capture, and system supervision |
| Serial Interfaces | 1 UART channel, 1 simplified SPI (CSI) channel, no I²C - suitable for point-to-point host communication and basic peripheral control |
| Power Modes | HALT, STOP, SNOOZE - achieves sub-μA standby current, critical for battery life extension |
Pinout & Package
Package: 20-pin TSSOP (PTSP0020JI-A), 4.4 × 6.5 mm, 0.65-mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock Output / SPI Clock / I²C Clock | Multi-function pin supporting buzzer tone generation, synchronous serial master clock, or analog sensing |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Data In / UART Receive / I²C Data / Debug RX | Shared UART receive and SPI input allows flexible peripheral attachment or debug interface reuse |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Data Out / UART Transmit / Debug TX | Combines UART transmit with SPI output and analog input - simplifies PCB routing in space-constrained layouts |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt 2 | Enables edge-triggered timing capture, PWM output, or external interrupt handling on same pin |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt 3 | Dual timer I/O capability supports quadrature decoding or dual-edge PWM generation |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Provides dedicated AVREFP connection for stable A/D conversion reference voltage |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Supports differential analog measurements when used with AVREFP |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | General-purpose analog input with internal sampling capacitor - no external RC filter required |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input for multi-sensor monitoring (e.g., temperature + voltage + current) |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug I/O | Enables capacitive touch key scanning or in-circuit debugging via single-wire interface |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Data Out / I²C Data / Timer Input 2 / Timer Output 2 / Interrupt 1 | Highly multiplexed pin supporting analog, serial, timing, and interrupt functions - requires careful peripheral assignment |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer Input 3 / Timer Output 3 | Enables second SPI/I²C interface or additional timer-based signal generation |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock / UART Transmit (remapped) | Alternate UART transmit path - allows UART relocation when P12 is used for other functions |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data / UART Receive (remapped) | Alternate UART receive path - supports pin remapping for layout optimization |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input 3 / Interrupt 3 | Primary crystal oscillator input - must be connected to external resonator for precise timing |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock In / Timer Input 2 / Interrupt 2 | Crystal output or external clock input - enables bypass mode for system clock flexibility |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Data In / Reset Input | Active-low hardware reset with internal pull-up - ensures reliable startup without external RC network |
| P137/INTP0 | Port 13 bit 7 / Interrupt 0 | Dedicated external interrupt pin - supports fast wake-up from STOP mode on event detection |
| VDD | Power Supply | Single 1.8–5.5 V supply - eliminates need for multiple rail regulators in low-cost designs |
| VSS | Ground | Common reference for analog and digital domains - requires low-impedance connection to minimize noise |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 μA/MHz active current enables >1-year battery life in coin-cell-powered devices |
| No data flash memory | Eliminates flash wear-out concerns in field-updatable firmware - ideal for fixed-function appliances |
| On-chip high-speed oscillator | ±5.0% accuracy over –40°C to +85°C - removes crystal cost and board area for non-precision timing |
| Peripheral I/O redirection | Allows dynamic remapping of UART, SPI, and timer pins - increases PCB layout flexibility and reduces routing congestion |
| Integrated voltage detector | 12-level LVD with interrupt/reset options - enables graceful shutdown or brown-out recovery without external supervisor IC |
| Programmable clock/buzzer output | Generates 2.44 kHz–10 MHz tones directly - replaces external buzzer driver and timing ICs in audio feedback systems |
Applications
| Smart Home Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, and UART transmission; uses SNOOZE mode between samples. Use Value: 63 μA/MHz active current and sub-μA STOP mode extend CR2032 battery life beyond 2 years. |
Use Scenario: Handheld pulse oximeter requiring analog front-end conditioning and LED drive timing. IC Role / Device Role / Timing Role: Signal processor managing 10-bit ADC sampling, LED PWM timing (via TO00/TO01), and UART diagnostics. Use Value: Integrated 4-channel 16-bit timer delivers precise LED current control without external timing components. |
| Industrial Control Panel | Consumer Appliance MCU |
Use Scenario: Front-panel interface with keypad scan, display update, and relay control in HVAC system. IC Role / Device Role / Timing Role: System manager handling KR0–KR5 key return inputs, PCLBUZ0 audible feedback, and GPIO-driven relays. Use Value: On-chip key interrupt and buzzer output eliminate external scan controller and piezo driver ICs. |
Use Scenario: Washing machine mainboard controlling motor, water valves, and user interface. IC Role / Device Role / Timing Role: Primary MCU executing motor commutation (via TO00–TO03), analog voltage monitoring (ANI0–ANI3), and UI updates. Use Value: 8-channel 10-bit ADC and 4 independent timer outputs enable closed-loop motor control with minimal external circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10266ASM#75 | Includes 2 KB data flash, CRC/SFR guard, DMA, and ±1.0% oscillator accuracy - but larger 256 B RAM footprint | Required for field firmware updates or safety-critical logging; not needed for static firmware deployments | Select when data retention, functional safety, or background flash writes are mandatory |
| R5F10368ASM#75 | Same package and core, but with 4 KB code flash and 512 B RAM - no change in peripherals or power specs | Suitable for applications needing larger firmware image (e.g., BLE stack integration or enhanced UI logic) | Choose when firmware size exceeds 2 KB and no data flash or safety features are required |
Compared with R5F10266ASM#75, the R5F10366ASM#75 trades data flash, DMA, and tighter oscillator tolerance for lower cost and simpler qualification - while matching its 20-pin TSSOP footprint and core functionality. Against R5F10368ASM#75, it offers identical peripheral set and power behavior but constrains firmware growth to 2 KB.
Availability
R5F10366ASM#75 is available at Aetrix Electronics and suitable for smart home sensors, portable medical monitors, industrial HMI panels, and consumer appliance control requiring stable component supply across long production lifecycles.
Supply support for R5F10366ASM#75 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, and power 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 general-purpose embedded control applications - emphasizing energy efficiency, integrated peripherals, and ease of development.
FAQ
What is the maximum operating frequency of the R5F10366ASM#75?
The R5F10366ASM#75 supports a maximum system clock frequency of 24 MHz using its high-speed on-chip oscillator. This yields 31 DMIPS performance and a minimum instruction execution time of 0.04167 μs. External crystal operation is limited to 20 MHz (1.0–20.0 MHz range per datasheet), and low-speed modes support up to 8 MHz at 1.8 V.
Does the R5F10366ASM#75 include data flash memory?
No, the R5F10366ASM#75 does not include data flash memory. As confirmed in the RL78/G12 datasheet Section 1.3.1, R5F103 products - including R5F10366ASM#75 - have "Not mounted" data flash. This distinguishes it from R5F102-series parts, which integrate 2 KB of data flash for nonvolatile parameter storage.
What package type and pin count does the R5F10366ASM#75 use?
The R5F10366ASM#75 uses a 20-pin plastic TSSOP package (PTSP0020JI-A) with 4.4 × 6.5 mm dimensions and 0.65-mm pitch. This is explicitly defined in Figure 1-1 and Table 1-1 of the RL78/G12 datasheet, where "#75" denotes tray packaging for TSSOP20 devices.
Can the R5F10366ASM#75 operate from a 1.8 V supply?
Yes, the R5F10366ASM#75 operates across a full 1.8 V to 5.5 V supply range. At 1.8 V, it supports low-speed main system clock operation up to 8 MHz and maintains full functionality of its 10-bit ADC, timers, UART, and I/O ports - making it suitable for single-cell lithium or alkaline battery applications.
Which serial interfaces are available on the R5F10366ASM#75?
The R5F10366ASM#75 provides one UART channel, one simplified SPI (CSI) channel, and no simplified I²C or standard I²C interface - as specified in Section 1.7 Outline of Functions. This configuration supports basic host communication and peripheral control but excludes multi-drop bus protocols like I²C.
R5F10366ASM#75 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- RL78/G12
- Packaging:
- Tray
- 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#75 FAQ
1.How can I place an order for R5F10366ASM#75 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10366ASM#75 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#75 reliable?
The price and inventory of R5F10366ASM#75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10366ASM#75 is usually 5 days.
3.What payment methods are accepted for R5F10366ASM#75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10366ASM#75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10366ASM#75?
R5F10366ASM#75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10366ASM#75 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#75?
For technical support, including R5F10366ASM#75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10366ASM#75 requirements.
6.How does Aetrix verify that R5F10366ASM#75 is sourced from the original manufacturer or authorized distributors?
All R5F10366ASM#75 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#75 meets industry standards.
7.What is the process for return or replacement of R5F10366ASM#75?
All R5F10366ASM#75 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10366ASM#75, 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#75 part is unused and in its original packaging.
Return procedure for R5F10366ASM#75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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