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Renesas R5F21182NP#U0
- Part No.:
- R5F21182NP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
R5F21182NP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 28HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:185
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Product details
Overview
R5F21182NP#U0 from Renesas Electronics is a 16-bit single-chip CMOS microcontroller in the R8C/18 Group, featuring an R8C/Tiny Series CPU core, 8 KB flash program memory, 512 bytes RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates timers (8-bit ×2, 16-bit ×1), UART + clock-synchronous serial I/O, 1-bit comparator (4 channels), watchdog timer, and 13 I/O pins - used in embedded control of household appliances and industrial sensors.
For engineers reviewing the R5F21182NP#U0 datasheet, R5F21182NP#U0 pinout, R5F21182NP#U0 application, or R5F21182NP#U0 equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative parts for design-in and supply continuity planning.
Technical Context
The R5F21182NP#U0 implements a 16-bit R8C/Tiny CPU with 89 fundamental instructions and a 1 Mbyte address space. Its memory map allocates flash ROM starting at 0E000h (8 KB), RAM at 00400h (512 B), and SFRs in 00000h–002FFh. The device supports two clock sources: external crystal/resonator (XIN/XOUT) and on-chip high-speed oscillator with frequency adjustment.
Peripheral integration includes Timer X/Z (8-bit, prescaled), Timer C (16-bit with input capture/output compare), dual UART channels (one shared with clock-sync serial I/O), and a 4-channel 1-bit comparator with analog inputs AN8–AN11. Power management features wait/stop modes with current down to 35 µA and 0.7 µA respectively at 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, 1 Mbyte address space |
| Flash Memory | 8 KB program ROM - sufficient for compact firmware with interrupt vectors at 0FFDCh–0FFFFh |
| RAM | 512 bytes - supports stack, subroutine calls, and data buffers in real-time control loops |
| Max Clock Speed | 20 MHz (50 ns min instruction time at VCC = 3.0–5.5 V) - enables responsive sensor polling and motor timing |
| Operating Voltage | 2.7–5.5 V - compatible with 3.3 V and 5 V system rails without level-shifting |
| Temp Range | −20°C to +85°C - rated for commercial/industrial ambient environments |
| Package | PWQN0028KA-B (28-pin HWQFN, 5 mm × 5 mm, 0.5 mm pitch) - surface-mount, space-efficient layout |
Pinout & Package
Packaged in a 28-pin HWQFN (PWQN0028KA-B), the R5F21182NP#U0 provides 13 configurable I/O ports (P1_0–P1_7, P3_3–P3_5, P3_7, P4_5), 3 dedicated input-only pins (P4_2/VREF, P4_6/XIN, P4_7/XOUT), and essential system pins including RESET, MODE, VCC/AVCC, and VSS/AVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0–P1_3 | CMOS I/O / LED drive port | Configurable as general-purpose I/O or direct LED sink (up to 20 mA per pin) |
| P1_4/TXD0, P1_5/RXD0 | UART channel 0 data I/O | Full-duplex asynchronous communication interface for host MCU or debug console |
| P1_6/CLK0 | Serial interface clock I/O | Provides or receives transfer clock for synchronous serial peripheral interfacing |
| P3_3/TCIN | Timer C input capture | Edge-triggered input for measuring pulse width or period of external signals |
| P4_2/VREF | Analog reference voltage input | External reference for 1-bit comparator - sets threshold for AN8–AN11 analog comparisons |
| RESET | Active-low reset input | Hardware reset assertion resets CPU, peripherals, and registers to known state |
| XIN/XOUT | Main clock oscillator terminals | Connects to ceramic resonator or crystal (e.g., 4–20 MHz) for precise timing source |
Key Features
| Feature | Design Value |
|---|---|
| On-chip high-speed oscillator | Adjustable frequency eliminates need for external crystal in cost-sensitive applications |
| Low-power stop mode | 0.7 µA typical current at 3.0 V enables battery-powered sensor nodes with multi-year runtime |
| Integrated voltage detection | On-chip circuit monitors VCC and triggers reset if supply drops below safe operating threshold |
| Four-channel 1-bit comparator | Hardware-level analog threshold detection on AN8–AN11 - offloads CPU from polling ADC |
| Interrupt priority levels | 7-level nested interrupt controller supports deterministic real-time response to mixed event sources |
Applications
| Smart Home Sensors | Industrial Panel Controllers |
|---|---|
Use Scenario: Temperature/humidity sensing node with local display and wireless reporting. IC Role / Device Role / Timing Role: Main controller executing sensor readout, calibration, display refresh, and UART-based data transmission. Use Value: Integrated UART, low-power stop mode, and on-chip oscillator reduce BOM count and extend battery life. |
Use Scenario: Front-panel interface for HVAC or PLC systems with button inputs and LED indicators. IC Role / Device Role / Timing Role: Dedicated UI controller managing key scan, LED drive, and status communication via UART. Use Value: Four LED drive ports (P1_0–P1_3) and KI0–KI3 key interrupt inputs enable responsive human interface without external logic. |
| Office Equipment Controls | Audio Device Subsystem |
Use Scenario: Paper jam detection and motor sequencing in printers/copiers. IC Role / Device Role / Timing Role: Real-time motion control supervisor using Timer C input capture for encoder feedback and output compare for stepper timing. Use Value: 16-bit Timer C with input capture supports precise position tracking at up to 20 MHz clock rate. |
Use Scenario: Volume/mute control and status monitoring in powered speakers or soundbars. IC Role / Device Role / Timing Role: Peripheral manager handling IR remote decode, button interrupts, and DAC configuration over UART. Use Value: 7-level interrupt priority ensures timely IR signal processing while maintaining audio sync stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21182SP | Same 8 KB flash, 512 B RAM, but in 20-pin LSSOP (PLSP0020JB-A) package | Limited I/O count (13 vs. 13 functional, but fewer physical pins); no HWQFN thermal performance | Select when board space allows larger footprint and thermal requirements are moderate |
| R5F21192NP | Adds 2 KB data flash (1 KB ×2 blocks); otherwise identical core/peripherals/package | Enables field-upgradable parameter storage or firmware patching - not supported by R5F21182NP#U0 | Choose when nonvolatile user data retention or firmware update capability is required |
Compared with R5F21182NP#U0, R5F21182SP offers identical functionality in a legacy LSSOP package with lower pin density, while R5F21192NP extends data retention capability via on-chip data flash - making it suitable for applications requiring field-programmable configuration without external EEPROM.
Availability
R5F21182NP#U0 is available at Aetrix Electronics and suitable for smart home sensors, industrial panel controllers, and office equipment controls requiring stable component supply across production lifecycles.
Supply support for R5F21182NP#U0 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 automotive, industrial, and consumer markets.
The R8C/18 Group, including R5F21182NP#U0, was designed for cost-optimized, low-power embedded control in appliances, sensors, and industrial HMI - emphasizing integration, small footprint, and robust operation across commercial temperature ranges.
FAQ
What is the maximum operating frequency of the R5F21182NP#U0?
The R5F21182NP#U0 operates at up to 20 MHz with a minimum instruction execution time of 50 ns when VCC is 3.0–5.5 V. This frequency is achieved using either the external main clock (XIN/XOUT) or the internal high-speed oscillator, which supports software-adjustable frequency tuning for system-level timing flexibility.
Does the R5F21182NP#U0 include on-chip data flash memory?
No, the R5F21182NP#U0 belongs to the R8C/18 Group and contains only program flash memory (8 KB). It does not include dedicated data flash. For data flash capability, consider the pin-compatible R5F21192NP from the R8C/19 Group, which adds 2 KB of data flash (1 KB ×2 blocks) while retaining identical package and peripheral set.
What package type is used for the R5F21182NP#U0?
The R5F21182NP#U0 is supplied in the PWQN0028KA-B package: a 28-pin HWQFN with 5 mm × 5 mm body, 0.5 mm lead pitch, and exposed thermal pad. This package supports high-density PCB layouts and improved thermal dissipation compared to 20-pin LSSOP alternatives like the R5F21182SP.
How many I/O pins does the R5F21182NP#U0 provide?
The R5F21182NP#U0 provides 13 programmable CMOS I/O pins (P1_0–P1_7, P3_3–P3_5, P3_7, P4_5), plus three dedicated input-only pins (P4_2/VREF, P4_6/XIN, P4_7/XOUT). Four of the I/O pins (P1_0–P1_3) double as LED drive ports capable of sinking up to 20 mA each.
What is the operating temperature range for the R5F21182NP#U0?
The R5F21182NP#U0 is rated for an operating ambient temperature range of −20°C to +85°C. It is classified as a "Standard" quality grade device per Renesas documentation, intended for applications including household appliances, office equipment, and general industrial controls - not for automotive, medical, or aerospace use without additional qualification.
R5F21182NP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 28-WFQFN Exposed Pad
- Series:
- R8C/1x/18
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- SIO, UART/USART
- Peripherals:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 13
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21182NP#U0 FAQ
1.How can I place an order for R5F21182NP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21182NP#U0 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 R5F21182NP#U0 reliable?
The price and inventory of R5F21182NP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21182NP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21182NP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21182NP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21182NP#U0?
R5F21182NP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21182NP#U0 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 R5F21182NP#U0?
For technical support, including R5F21182NP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21182NP#U0 requirements.
6.How does Aetrix verify that R5F21182NP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21182NP#U0 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 R5F21182NP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21182NP#U0?
All R5F21182NP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21182NP#U0, 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 R5F21182NP#U0 part is unused and in its original packaging.
Return procedure for R5F21182NP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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