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Renesas R5F21182SP#U0
- Part No.:
- R5F21182SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21182SP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,750
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Product details
Overview
R5F21182SP#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 appliance control, sensor interfaces, and industrial embedded systems.
For engineers reviewing the R5F21182SP#U0 datasheet, R5F21182SP#U0 pinout, R5F21182SP#U0 application, or R5F21182SP#U0 equivalent, this page delivers verified specifications, package mapping to PLSP0020JB-A (20-pin LSSOP), validated peripheral roles, and real-world use context for rapid design-in and replacement evaluation.
Technical Context
The R5F21182SP#U0 implements a 20-bit program counter and dual register banks (R0–R3, A0–A1) supporting efficient context switching. Its memory map allocates 1 Mbyte address space with fixed interrupt vector table at 0FFDCh–0FFFFh and SFRs at 00000h–002FFh.
It supports two clock sources: external crystal/resonator via XIN/XOUT (with oscillation stop detection) and on-chip high-speed/low-speed oscillators (the former with frequency adjustment). Power management includes wait mode (35 µA typ.) and stop mode (0.7 µA typ.) at VCC = 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit CPU with 89 instructions and 20-bit PC |
| Flash Memory | 8 KB program ROM - sufficient for mid-complexity firmware with bootloader support |
| RAM | 512 bytes - supports stack, local variables, and small data buffers in real-time tasks |
| Max Clock Speed | 20 MHz (50 ns min instruction time at VCC = 3.0–5.5 V) - enables responsive sensor polling and motor control loops |
| Supply Voltage | 2.7–5.5 V - compatible with both 3.3 V and 5 V system rails without level-shifting |
| Operating Temp | −20°C to +85°C - rated for commercial/industrial indoor environments (non-D version) |
| I/O Pins | 13 programmable CMOS I/O pins (including 4 LED drive ports) - direct interface to indicators, buttons, and low-power peripherals |
| Peripherals | UART ×1, clock-sync serial I/O ×1, 8-bit timers ×2, 16-bit timer ×1, 1-bit comparator ×4, watchdog ×1 - integrated control capability for standalone embedded nodes |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | Multi-function I/O port | Configurable as key input interrupt, analog comparator input, or general-purpose I/O - enables wake-on-key and analog threshold detection |
| P1_4 / TXD0 | UART transmit output | Drives RS-232/RS-485 transceivers or TTL-level debug console - no external driver needed for 3.3 V logic |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input / timer input / interrupt | Shared pin supports serial command reception, external event counting, or priority-triggered ISR entry |
| XIN / P4_6 | Main clock input | Accepts 1–20 MHz crystal or ceramic resonator - internal feedback resistor eliminates external component |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable power-on initialization without external RC network |
| VCC / AVCC | Digital & analog power supply | Single 2.7–5.5 V rail powers core and comparator - AVCC decoupling required for <1 LSB comparator accuracy |
| MODE | Boot mode select | Must be pulled high via resistor to enable normal flash execution - prevents accidental ISP entry during power-up |
Key Features
| Feature | Design Value |
|---|---|
| On-chip high-speed oscillator | Adjustable frequency reduces BOM cost and board space vs. external crystal - calibrated for ±2% accuracy over temp |
| Data retention in stop mode | 0.7 µA typical current preserves RAM content and register state - enables ultra-low-power wake-on-interrupt designs |
| LED drive ports (P1_0–P1_3) | Direct sink/source capability (20 mA per pin) - drives common-anode/cathode indicators without external transistors |
| Comparator with 4-channel input | Hardware-based voltage threshold detection across AN8–AN11 - offloads ADC polling and enables fast response (<1 µs latency) |
| Interrupt priority levels (7) | Hardware-nested interrupt handling - ensures timely servicing of critical events (e.g., safety timeout) over background tasks |
| Flash programming voltage | Single VCC supply (2.7–5.5 V) for in-system programming - eliminates dedicated VPP pin or external HV generator |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor sequencing, water valve timing, and user interface. IC Role / Device Role / Timing Role: Central timing and I/O coordinator - executes finite-state machine logic, samples front-panel buttons via KI0–KI3, and drives LED indicators via P1_0–P1_3. Use Value: Integrated UART enables field-service diagnostics; 8 KB flash accommodates feature-rich firmware with OTA update capability. |
Use Scenario: Standalone temperature/humidity monitor in HVAC ductwork with local display and RS-485 reporting. IC Role / Device Role / Timing Role: Sensor interface and protocol engine - reads analog sensors via comparator inputs (AN8–AN11), formats data, and transmits via UART+external transceiver. Use Value: Low-power stop mode extends battery life; on-chip oscillator eliminates crystal for cost-sensitive deployments. |
| Office Equipment Interface | Security System Keypad |
|
Use Scenario: Embedded controller in document scanner managing paper feed motors, lamp brightness, and USB bridge communication. IC Role / Device Role / Timing Role: Peripheral coordinator - uses Timer C for precise PWM lamp control and UART for host command parsing. Use Value: 13 I/O pins directly manage stepper drivers and status LEDs; 512-byte RAM buffers image metadata before USB transfer. |
Use Scenario: Keypad controller in access control panel detecting button presses, validating codes, and triggering door relay. IC Role / Device Role / Timing Role: Real-time input processor - scans matrix keys using KI0–KI3 interrupts and debounces via Timer X overflow. Use Value: Hardware comparator detects tamper voltage thresholds; 7-level interrupt priority ensures immediate response to emergency inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21182DD | Same core, memory, and peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP | Through-hole mounting - preferred for prototyping, repair, or high-vibration environments | Select R5F21182DD when manual soldering or mechanical robustness outweighs PCB area constraints. |
| R5F21183SP | 12 KB flash, 768 bytes RAM - identical package and pinout, no functional change beyond memory size | Higher firmware complexity tolerance - suitable for applications requiring larger bootloaders or multi-protocol stacks | Choose R5F21183SP if future firmware expansion or dual-application partitioning is anticipated. |
Compared with R5F21182DD and R5F21183SP, the R5F21182SP#U0 offers optimal balance of flash capacity, package footprint, and thermal performance for cost-sensitive, space-constrained embedded control - while maintaining full software compatibility within the R8C/18 Group.
Availability
R5F21182SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment requiring stable component supply across long production lifecycles.
Supply support for R5F21182SP#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, and power solutions for automotive, industrial, and IoT applications.
The R8C/18 Group - including R5F21182SP#U0 - was designed for cost-effective, low-power embedded control in consumer and industrial equipment where reliability, integration, and ease of development are critical.
FAQ
What is the maximum operating frequency of the R5F21182SP#U0?
The R5F21182SP#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 supported by both external crystal/resonator (via XIN/XOUT) and the internal high-speed oscillator, which includes frequency adjustment capability for calibration.
Does the R5F21182SP#U0 include data flash memory?
No, the R5F21182SP#U0 belongs to the R8C/18 Group and contains only program flash memory (8 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/19 Group (e.g., R5F21192SP). The R5F21182SP#U0 relies on RAM or external EEPROM for nonvolatile data storage.
What package type is used for the R5F21182SP#U0?
The R5F21182SP#U0 is packaged in a 20-pin molded-plastic LSSOP (PLSP0020JB-A), with 0.65 mm lead pitch and gull-wing leads. This surface-mount package supports automated assembly and provides thermal performance suitable for commercial-temperature applications (−20°C to +85°C).
Can the R5F21182SP#U0 operate from a 3.3 V supply?
Yes, the R5F21182SP#U0 supports VCC = 2.7–5.5 V, making it fully compatible with 3.3 V systems. At 3.0 V and 10 MHz, typical current consumption is 5 mA (active), 35 µA (wait mode), and 0.7 µA (stop mode) - enabling energy-efficient operation in battery-backed or low-power designs.
How many interrupt sources does the R5F21182SP#U0 support?
The R5F21182SP#U0 supports 18 total interrupt sources: 10 internal (e.g., timer overflow, UART receive), 4 external (INT0–INT3), and 4 software interrupts. These are managed across 7 priority levels, allowing deterministic response to time-critical events such as safety timeouts or sensor triggers.
R5F21182SP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/18
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
R5F21182SP#U0 FAQ
1.How can I place an order for R5F21182SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21182SP#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 R5F21182SP#U0 reliable?
The price and inventory of R5F21182SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21182SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21182SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21182SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21182SP#U0?
R5F21182SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21182SP#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 R5F21182SP#U0?
For technical support, including R5F21182SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21182SP#U0 requirements.
6.How does Aetrix verify that R5F21182SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21182SP#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 R5F21182SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21182SP#U0?
All R5F21182SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21182SP#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 R5F21182SP#U0 part is unused and in its original packaging.
Return procedure for R5F21182SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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