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Renesas R5F21184SP#U0
- Part No.:
- R5F21184SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21184SP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,371
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Product details
Overview
R5F21184SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/18 Group, featuring an R8C/Tiny Series CPU core, 16 KB on-chip flash ROM, 1 KB RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates timer peripherals (Timer X/Z/C), UART and clock-synchronous serial I/O, a 4-channel 1-bit comparator, watchdog timer, and 13 configurable I/O pins - deployed in consumer appliance control and industrial sensor interfaces.
For engineers reviewing the R5F21184SP#U0 datasheet, R5F21184SP#U0 pinout, R5F21184SP#U0 application, or R5F21184SP#U0 equivalent, this page delivers verified specifications, package mapping to PLSP0020JB-A (20-pin LSSOP), validated peripheral roles, and real-world use context for embedded firmware development and BOM selection.
Technical Context
The R5F21184SP#U0 implements a 16-bit R8C/Tiny CPU with 89 fundamental instructions and a 20-bit program counter enabling 1 Mbyte address space. Its memory subsystem includes 16 KB flash ROM (program storage) and 1 KB SRAM, with no data flash - distinguishing it from R8C/19 Group variants.
Peripherals include Timer X (8-bit), Timer Z (8-bit), and Timer C (16-bit with input capture/output compare), two UART channels, one clock-synchronous serial interface, and a 4-channel 1-bit comparator. Power management supports wait mode (35 µA typ.) and stop mode (0.7 µA typ.) at 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, 20-bit PC for 1 Mbyte addressing |
| ROM Capacity | 16 KB flash - stores firmware; no data flash (R8C/18 Group) |
| RAM Capacity | 1 KB SRAM - used for variables, stack, and interrupt handling |
| Max Clock Frequency | 20 MHz (50 ns min instruction time at VCC = 3.0–5.5 V) |
| Supply Voltage | 2.7–5.5 V - supports wide-input industrial and battery-powered systems |
| Operating Temperature | −20°C to +85°C - standard grade for consumer and office equipment |
| Package | 20-pin LSSOP (PLSP0020JB-A) - surface-mount, 0.65 mm pitch, compact footprint |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm lead pitch, JEDEC MS-013AC compliant, suitable for automated SMT assembly and thermal cycling in consumer-grade applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | I/O port / key interrupt / analog input / comparator input | Configurable as GPIO, wake-up source, ADC channel, or comparator reference |
| P1_4 / TXD0 | UART transmit output | Drives serial data to external host or peripheral; open-drain capable with pull-up |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input / timer input / interrupt input | Accepts serial data, external event pulses, or interrupt triggers on falling edge |
| XIN / P4_6 | Main clock oscillator input | Accepts crystal (1–20 MHz) or external clock signal; enables precise timing control |
| RESET | Active-low reset input | Hardware reset assertion halts CPU, clears registers, and restarts boot sequence |
| VCC / AVCC | Digital & analog power supply | Single 2.7–5.5 V rail powers logic and comparator; decoupling required at AVCC |
Key Features
| Feature | Design Value |
|---|---|
| Low-power operation modes | Wait mode (35 µA typ.) and stop mode (0.7 µA typ.) at 3.0 V enable battery longevity |
| Integrated analog comparator | 4-channel 1-bit comparator supports threshold detection without external components |
| Dual serial interfaces | One UART + one clock-synchronous serial I/O allows concurrent host comms and sensor sync |
| On-chip oscillators | High-speed (adjustable) and low-speed on-chip oscillators eliminate external crystals for basic timing |
| LED drive capability | P1_0–P1_3 support direct LED sinking (up to 20 mA per pin) for status indication |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Embedded controller in microwave oven or washing machine main PCB managing user input, motor sequencing, and safety interlocks. IC Role / Device Role / Timing Role: Primary system MCU executing real-time state machine, driving relays/LEDs, and sampling temperature sensors via comparator inputs. Use Value: 16 KB flash accommodates feature-rich firmware; 1 KB RAM supports multitasked UI and sensor buffering; low-power modes reduce standby consumption. |
Use Scenario: Compact sensor node in HVAC duct monitoring ambient temperature, humidity, and airflow with local decision logic. IC Role / Device Role / Timing Role: Standalone sensor aggregator with UART output to gateway; uses Timer C for precise pulse-width measurement of airflow sensor. Use Value: Integrated comparator replaces external op-amp for analog thresholding; UART+sync serial enables dual-interface fieldbus compatibility. |
| Office Equipment Logic | Audio Device Front Panel |
|
Use Scenario: Control unit in multifunction printer managing paper feed, button press detection, and error reporting via LED indicators. IC Role / Device Role / Timing Role: Dedicated I/O manager with key interrupt (KI0–KI3) for tactile buttons and LED drive ports (P1_0–P1_3) for status lights. Use Value: 13 GPIO pins simplify board layout; built-in key interrupt debouncing reduces firmware overhead; 20 MHz performance ensures responsive UI. |
Use Scenario: Front-panel controller in portable speaker handling volume knob ADC emulation, play/pause button logic, and LED ring animation. IC Role / Device Role / Timing Role: Peripheral coordinator using Timer Z for LED PWM dimming and UART for command relay to main audio SoC. Use Value: On-chip high-speed oscillator eliminates crystal cost; 1 KB RAM buffers encoder position history; flash endurance (100 cycles) supports field firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21184DD | Same core, memory, and peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP | Through-hole assembly preferred for prototyping or legacy rework; larger footprint and higher thermal mass | Select for hand-soldered evaluation or where LSSOP reflow is unavailable |
| R5F21194SP | Identical package and pinout, but adds 2 KB data flash (1 KB × 2 blocks); otherwise identical ROM/RAM/peripherals | Enables EEPROM-like parameter storage (e.g., calibration data, user settings) without external memory | Choose when field-updatable configuration storage is required; verify flash write endurance (10,000 cycles) meets use case |
Compared with R5F21184SP#U0, R5F21184DD offers through-hole mounting flexibility but lacks LSSOP's space efficiency, while R5F21194SP adds data flash functionality at identical pinout - making it a functional upgrade path where nonvolatile parameter retention is critical.
Availability
R5F21184SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor interface, and office equipment requiring stable component supply across production lifecycles.
Supply support for R5F21184SP#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 formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/18 Group, including R5F21184SP#U0, was designed for cost-sensitive, low-power embedded applications in consumer electronics and general industrial equipment - emphasizing integration, ease of use, and qualification for standard-grade environments.
FAQ
What is the maximum operating frequency of the R5F21184SP#U0?
The R5F21184SP#U0 operates at up to 20 MHz with a minimum instruction execution time of 50 ns when powered at 3.0–5.5 V. This frequency is achieved using the main crystal oscillator (XIN/XOUT) or the internal high-speed oscillator, which supports software-adjustable frequency tuning for timing-critical applications.
Does the R5F21184SP#U0 include data flash memory?
No, the R5F21184SP#U0 belongs to the R8C/18 Group and contains only program flash ROM (16 KB). It does not include dedicated data flash memory - unlike the R8C/19 Group (e.g., R5F21194SP), which adds 2 KB of data flash for nonvolatile parameter storage.
Which package type is used for the R5F21184SP#U0?
The R5F21184SP#U0 is supplied in the PLSP0020JB-A package: a 20-pin low-profile small-outline plastic (LSSOP) with 0.65 mm lead pitch. This surface-mount package is optimized for automated assembly and compact PCB layouts in space-constrained consumer electronics.
How many I/O pins does the R5F21184SP#U0 support?
The R5F21184SP#U0 provides 13 programmable I/O pins (P1_0–P1_7, P3_3–P3_5, P3_7, P4_5), plus 3 dedicated input-only pins (P4_2, P4_6, P4_7). Four of the I/O pins (P1_0–P1_3) double as LED drive ports capable of sinking up to 20 mA each.
What serial communication interfaces are integrated into the R5F21184SP#U0?
The R5F21184SP#U0 integrates two independent serial interfaces: one UART channel (TXD0/RXD0) and one clock-synchronous serial I/O channel (CLK0/TXD0/RXD0 multiplexed). These support full-duplex communication with external hosts, sensors, or displays without requiring additional protocol ICs.
R5F21184SP#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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
R5F21184SP#U0 FAQ
1.How can I place an order for R5F21184SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21184SP#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 R5F21184SP#U0 reliable?
The price and inventory of R5F21184SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21184SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21184SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21184SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21184SP#U0?
R5F21184SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21184SP#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 R5F21184SP#U0?
For technical support, including R5F21184SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21184SP#U0 requirements.
6.How does Aetrix verify that R5F21184SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21184SP#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 R5F21184SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21184SP#U0?
All R5F21184SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21184SP#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 R5F21184SP#U0 part is unused and in its original packaging.
Return procedure for R5F21184SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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