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Renesas R5F10366DSP#X5
- Part No.:
- R5F10366DSP#X5
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F10366DSP#X5.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,491
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Product details
Overview
R5F10366DSP#X5 from Renesas Electronics is a 20-pin LSSOP ultra-low-power 16-bit RL78/G12 microcontroller with 2 KB code flash, 256 B RAM, 1.8–5.5 V operation, and -40°C to +85°C industrial temperature range (D-grade), designed for battery-powered sensor nodes and embedded control in HVAC, smart meters, and industrial I/O modules.
For engineers reviewing the R5F10366DSP#X5 datasheet, R5F10366DSP#X5 pinout, R5F10366DSP#X5 application, or R5F10366DSP#X5 equivalent, key selection considerations include its single UART channel, absence of data flash and DMA, 10-bit 11-channel ADC, and 20-pin LSSOP-0.65 mm package with N-ch open-drain I/O support for mixed-voltage interfacing.
Technical Context
The R5F10366DSP#X5 implements the RL78 CPU core with 3-stage pipeline CISC architecture, 1 MB address space, and configurable instruction execution time (0.04167 µs at 24 MHz). It uses a high-speed on-chip oscillator (±5.0% accuracy over -40°C to +85°C) and supports HALT/STOP/SNOOZE low-power modes down to 63 µA/MHz.
Peripheral integration includes a 10-bit 11-channel ADC with internal 1.45 V reference and temperature sensor, four 16-bit timer channels (with PWM capability), one watchdog timer, one 12-bit interval timer, and a single UART channel - all operating within the same 1.8–5.5 V supply domain without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC CPU with 3-stage pipeline, 1 MB address space, 8×8-bit register banks × 4 |
| Flash / RAM | 2 KB code flash (no data flash); 256 B RAM - sufficient for compact firmware with minimal variable storage |
| Operating Voltage | 1.8 V to 5.5 V - enables direct interface with 1.8 V, 3.3 V, and 5 V logic without level translation |
| ADC | 10-bit resolution, 11 input channels, internal 1.45 V reference, integrated temperature sensor - suitable for local environmental monitoring |
| Timers | Four 16-bit TAU channels + 12-bit interval timer + watchdog timer - supports PWM generation, periodic wake-up, and system safety monitoring |
| Serial Interface | 1 UART channel (RxD0/TxD0), no CSI or I²C - optimized for simple host-to-peripheral communication only |
| Power Modes | HALT, STOP, SNOOZE - achieves 63 µA/MHz active current and sub-µA STOP mode for multi-year battery life |
Pinout & Package
Package: 20-pin plastic LSSOP (4.4 × 6.5 mm, 0.65 mm pitch), RoHS-compliant, tape-and-reel (#X5 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/ANI16/PCLBUZ0/SCK00/SCL00 | Port 1 bit 0 / Analog Input 16 / Programmable Clock/Buzzer Output / SPI Clock / I²C Clock | Multi-function pin supporting clock output, serial interface, or analog sensing - selectable via PIOR register |
| P11/ANI17/SI00/RxD0/SDA00/TOOLRxD | Port 1 bit 1 / Analog Input 17 / SPI Input / UART Receive / I²C Data / Debug RX | Primary UART receive path; also serves as SPI input and debug interface - critical for firmware updates and diagnostics |
| P12/ANI18/SO00/TxD0/TOOLTxD | Port 1 bit 2 / Analog Input 18 / SPI Output / UART Transmit / I²C Data / Debug TX | Primary UART transmit path; dual-use for SPI output and debug - enables consolidated serial debug and control |
| P13/ANI19/TI00/TO00/INTP2 | Port 1 bit 3 / Analog Input 19 / Timer Input 0 / Timer Output 0 / Interrupt Pin 2 | Timer I/O with interrupt capability - used for pulse-width measurement, edge-triggered event capture, or PWM output |
| P14/ANI20/TI01/TO01/INTP3 | Port 1 bit 4 / Analog Input 20 / Timer Input 1 / Timer Output 1 / Interrupt Pin 3 | Second timer I/O pair - supports complementary PWM or independent timing functions with interrupt on event |
| P20/ANI0/AVREFP | Port 2 bit 0 / Analog Input 0 / Positive Analog Reference | Analog reference voltage input - sets upper bound for ADC conversion range; must be stable and low-noise |
| P21/ANI1/AVREFM | Port 2 bit 1 / Analog Input 1 / Negative Analog Reference | Analog reference voltage return - forms differential reference pair with P20 for improved noise rejection |
| P22/ANI2 | Port 2 bit 2 / Analog Input 2 | Dedicated analog input - used for sensor signal acquisition without multiplexing overhead |
| P23/ANI3 | Port 2 bit 3 / Analog Input 3 | Additional analog input - expands channel count for multi-sensor systems without external MUX |
| P40/KR0/TOOL0 | Port 4 bit 0 / Key Return 0 / Debug I/O | Multi-role pin for keypad scanning, debug communication, or general-purpose I/O - reduces external component count |
| P41/ANI22/SO01/SDA01/TI02/TO02/INTP1 | Port 4 bit 1 / Analog Input 22 / SPI Output / I²C Data / Timer I/O / Interrupt Pin 1 | High-flexibility pin supporting analog, serial, timer, and interrupt functions - enables compact peripheral integration |
| P42/ANI21/SCK01/SCL01/TI03/TO03 | Port 4 bit 2 / Analog Input 21 / SPI Clock / I²C Clock / Timer I/O | Secondary SPI/I²C clock source - allows dual serial bus operation when configured with P41 |
| P60/KR4/SCLA0/(TxD0) | Port 6 bit 0 / Key Return 4 / I²C Clock / UART Transmit (remapped) | N-ch open-drain I/O with 6 V tolerance - supports 5 V I²C bus or level-shifted UART without external transistors |
| P61/KR5/SDAA0/(RxD0) | Port 6 bit 1 / Key Return 5 / I²C Data / UART Receive (remapped) | N-ch open-drain I/O with 6 V tolerance - complements P60 for robust mixed-voltage I²C or UART interfaces |
| P121/KR3/X1/(TI03)/(INTP3) | Port 12 bit 1 / Key Return 3 / Crystal Input / Timer Input / Interrupt | Primary crystal oscillator input - requires external 1–20 MHz resonator; also usable as timer input or interrupt source |
| P122/KR2/X2/EXCLK/(TI02)/(INTP2) | Port 12 bit 2 / Key Return 2 / Crystal Output / External Clock / Timer Input / Interrupt | Crystal oscillator output or external clock input - enables precise timing source selection or bypass mode |
| P125/KR1/SI01/RESET | Port 12 bit 5 / Key Return 1 / SPI Input / Reset Input | Active-low reset pin with internal pull-up - accepts external reset signals or serves as SPI input when not in reset |
| VDD | Power Supply | Single 1.8–5.5 V supply - eliminates need for separate analog/digital rails or LDOs in low-complexity designs |
| VSS | Ground | Common ground reference for analog and digital domains - requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 63 µA/MHz active current and sub-µA STOP mode enable >10-year battery life in coin-cell-powered sensors |
| No data flash memory | Eliminates flash wear-out concerns and simplifies firmware update architecture for fixed-function applications |
| 10-bit 11-channel ADC with temp sensor | Enables simultaneous monitoring of multiple analog sensors plus on-die temperature without external components |
| Single UART with remappable pins | Allows flexible PCB layout by assigning RxD/TxD to P11/P12 or P61/P60 - supports both 3.3 V and 5 V bus levels |
| 20-pin LSSOP with 6 V-tolerant I/O | Reduces board area vs. QFN while enabling direct interface to legacy 5 V peripherals without level shifters |
Applications
| Smart Thermostat Sensor Node | Industrial Digital I/O Module |
|---|---|
|
Use Scenario: Battery-powered wireless temperature/humidity node transmitting data via UART to gateway MCU. IC Role / Device Role / Timing Role: Primary controller executing sensor readout, ADC conversion, low-power scheduling, and UART framing. Use Value: 63 µA/MHz active current and STOP mode extend CR2032 battery life beyond 5 years; 11-channel ADC supports multi-sensor fusion. |
Use Scenario: DIN-rail mounted 8-channel digital input module converting 24 V industrial signals to UART-based status reporting. IC Role / Device Role / Timing Role: Signal conditioner and protocol translator handling opto-isolated inputs, debouncing, and UART packetization. Use Value: 6 V-tolerant P60/P61 pins directly interface 24 V inputs with resistive dividers; 1.8–5.5 V operation avoids auxiliary DC-DC converter. |
| Energy Meter Front-End Controller | Appliance Motor Control Monitor |
|
Use Scenario: Sub-metering unit measuring AC line voltage/current via shunt/resistive dividers and reporting kWh via UART. IC Role / Device Role / Timing Role: Analog front-end processor performing RMS calculation, zero-cross detection, and UART telemetry. Use Value: Internal 1.45 V reference ensures stable ADC scaling across temperature; 12-bit interval timer enables precise 50/60 Hz sampling synchronization. |
Use Scenario: Embedded monitor in washing machine detecting motor stall, RPM, and vibration via current sensing and hall-effect inputs. IC Role / Device Role / Timing Role: Real-time fault detector capturing current spikes and timing anomalies using timer input capture and ADC oversampling. Use Value: TI00/TI01 pins provide hardware edge capture for <1 µs response; 10-bit ADC resolves 0.1% current changes for early fault prediction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10266DSP#X5 | Includes 2 KB data flash and DMA controller; identical pinout and package | Supports field firmware updates and background data logging without host intervention | Select when non-volatile parameter storage or autonomous data buffering is required |
| R5F10367DSP#X5 | 4 KB code flash, 512 B RAM, same peripherals and package | Accommodates larger firmware images with expanded communication stacks or encryption libraries | Select when application code size exceeds 2 KB or additional RAM for buffers is needed |
Compared with R5F10266DSP#X5, the R5F10366DSP#X5 trades data flash and DMA for lower cost and reduced complexity in fixed-function roles; compared with R5F10367DSP#X5, it offers tighter memory constraints ideal for deeply embedded control where code footprint is strictly bounded.
Availability
R5F10366DSP#X5 is available at Aetrix Electronics and suitable for industrial digital I/O modules, smart thermostat sensor nodes, energy meter front-ends, and appliance motor monitors requiring stable component supply and long-term manufacturability.
Supply support for R5F10366DSP#X5 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 microcontrollers, analog, power, and SoC products for automotive, industrial, infrastructure, and IoT applications.
The RL78/G12 product line delivers true low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and industrial control applications where reliability, small footprint, and wide voltage operation are essential.
FAQ
What is the maximum operating frequency of the R5F10366DSP#X5?
The R5F10366DSP#X5 supports a maximum high-speed on-chip oscillator frequency of 24 MHz, delivering 31 DMIPS performance at 24 MHz operation. Its minimum instruction execution time is 0.04167 µs under these conditions. The device also supports external crystal oscillators up to 20 MHz for higher precision timing when required.
Does the R5F10366DSP#X5 include data flash memory?
No, the R5F10366DSP#X5 does not include data flash memory. As confirmed in the RL78/G12 datasheet section 1.3.1, R5F103 products - including R5F10366DSP#X5 - have no data flash. This distinguishes it from R5F102-series parts like R5F10266DSP#X5, which integrate 2 KB of data flash for parameter storage.
What are the key differences between R5F10366DSP#X5 and R5F10266DSP#X5?
The R5F10366DSP#X5 lacks data flash memory and DMA controller present in the R5F10266DSP#X5, and has ±5.0% high-speed on-chip oscillator accuracy versus ±1.0% for the R5F10266DSP#X5. Both share identical 20-pin LSSOP packaging, 2 KB code flash, 256 B RAM, and -40°C to +85°C D-grade temperature rating.
Which serial interfaces are supported by the R5F10366DSP#X5?
The R5F10366DSP#X5 supports exactly one UART channel (RxD0/TxD0), with no CSI, Simplified I²C, or dedicated I²C peripheral. UART functionality can be assigned to either P11/P12 or remapped to P61/P60 - the latter providing 6 V-tolerant operation for direct 5 V bus interfacing.
What is the ADC configuration of the R5F10366DSP#X5?
The R5F10366DSP#X5 integrates a 10-bit successive-approximation ADC with 11 input channels (ANI0–ANI3, ANI16–ANI22), internal 1.45 V reference voltage, and an on-chip temperature sensor. It operates across the full 1.8–5.5 V supply range and supports single-ended and differential input modes via software configuration.
R5F10366DSP#X5 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:
- Obsolete
- Programmable:
- Not Verified
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F10366DSP#X5 FAQ
1.How can I place an order for R5F10366DSP#X5 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10366DSP#X5 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 R5F10366DSP#X5 reliable?
The price and inventory of R5F10366DSP#X5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10366DSP#X5 is usually 5 days.
3.What payment methods are accepted for R5F10366DSP#X5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10366DSP#X5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10366DSP#X5?
R5F10366DSP#X5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10366DSP#X5 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 R5F10366DSP#X5?
For technical support, including R5F10366DSP#X5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10366DSP#X5 requirements.
6.How does Aetrix verify that R5F10366DSP#X5 is sourced from the original manufacturer or authorized distributors?
All R5F10366DSP#X5 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 R5F10366DSP#X5 meets industry standards.
7.What is the process for return or replacement of R5F10366DSP#X5?
All R5F10366DSP#X5 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10366DSP#X5, 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 R5F10366DSP#X5 part is unused and in its original packaging.
Return procedure for R5F10366DSP#X5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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