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Renesas R5F21184DD#U0
- Part No.:
- R5F21184DD#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-SDIP (0.300", 7.62mm)
- Datasheet:
-
R5F21184DD#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
R5F21184DD#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/18 Group, featuring 16 KB flash ROM, 1 KB RAM, and operation across -40°C to +85°C. It integrates an R8C/Tiny CPU core, three 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 industrial sensor nodes and appliance control subsystems.
For engineers reviewing the R5F21184DD#U0 datasheet, R5F21184DD#U0 pinout, R5F21184DD#U0 application, or R5F21184DD#U0 equivalent, key selection criteria include its 20-pin SDIP package (PRDP0020BA-A), -40°C to +85°C temperature grade, flash endurance (100 write/erase cycles), low-power stop mode (0.7 µA), and absence of on-chip data flash - distinguishing it from R8C/19 Group variants.
Technical Context
The R5F21184DD#U0 implements the R8C/Tiny Series CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). Its memory map allocates 16 KB program ROM from 0xC000–0xFFFF and 1 KB RAM from 0x0400–0x07FF within a 1 Mbyte address space.
Peripheral integration includes dual serial interfaces (UART + clock-synchronous), Timer C with input capture/output compare, and a 4-channel comparator with analog inputs AN8–AN11. The device uses two clock sources: external crystal/resonator (XIN/XOUT) and high-/low-speed on-chip oscillators - the latter with frequency adjustment capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, 50 ns min. instruction time at 20 MHz |
| Memory | 16 KB flash ROM (program only), 1 KB RAM, no data flash - limits field firmware updates |
| Operating Temp | -40°C to +85°C (D-grade), validated for industrial environments with extended thermal margin |
| Power Consumption | 0.7 µA in stop mode (VCC = 3.0 V), enabling battery-backed sleep states in portable systems |
| Package | 20-pin SDIP (PRDP0020BA-A), through-hole compatible, 0.65 mm pitch, RoHS-compliant |
| Peripherals | UART + clock-synchronous serial I/O, Timer X/Z (8-bit), Timer C (16-bit w/ capture/compare), 4-channel comparator |
| Supply Voltage | 2.7–5.5 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters |
Pinout & Package
Package: 20-pin molded-plastic SDIP (PRDP0020BA-A), 300 mil body width, 0.65 mm lead pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | P3_5 / P3_4 | General-purpose I/O with comparator channel 1 inputs (CMP1_2/CMP1_1) |
| 2, 19 | P3_7 / P3_3 | Timer X input (CNTR0) and Timer C input (TCIN), plus INT3 interrupt |
| 3 | RESET | Active-low asynchronous reset - must be held low ≥100 ns for reliable initialization |
| 4, 6 | XOUT / XIN | Main clock oscillator terminals - accept ceramic resonator (1–20 MHz) or external clock |
| 5, 7 | VSS/AVSS / VCC/AVCC | Dual power domains: digital (VCC/VSS) and analog (AVCC/AVSS) - require separate decoupling |
| 8 | MODE | Boot-mode select - tied to VCC via resistor to enable normal flash execution |
| 9, 10, 11, 12 | P4_5 / P1_7 / P1_6 / P1_5 | Interrupt-capable I/O: INT0, INT10, CLK0 (serial clock), RXD0 - support wake-from-sleep triggers |
| 13–18 | P1_4–P1_0 | Primary serial and analog interface: TXD0, RXD0, KI0–KI3, AN8–AN11, CMP0_0–CMP0_2, TZOUT |
| 16 | VREF | Analog reference voltage input - sets comparator threshold when external reference is required |
Key Features
| Feature | Design Value |
|---|---|
| Low-power stop mode | 0.7 µA typical current draw enables >1-year battery life in intermittent-sensing applications |
| Integrated analog comparator | 4 independent channels (CMP0_0–CMP0_2, CMP1_0–CMP1_2) with selectable reference sources |
| Dual serial interfaces | UART + clock-synchronous serial I/O on shared pins - supports simultaneous host comms and sensor bridging |
| Hardware timer flexibility | Timer C provides input capture for pulse-width measurement and output compare for precise PWM generation |
| Industrial temperature grade | -40°C to +85°C operation verified per Renesas "Standard" quality grade - suitable for factory-floor controllers |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Embedded controller in washing machine main board managing motor drive sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system MCU executing real-time motor control loops and handling UART-based communication with display module. Use Value: 16 KB flash accommodates full motor control firmware; 1 KB RAM supports multi-tasking buffers; -40°C to +85°C rating ensures reliability in hot cabinet environments. |
Use Scenario: Standalone temperature/humidity sensor node with RS-485 output in HVAC duct monitoring. IC Role / Device Role / Timing Role: Data acquisition MCU sampling analog sensors via comparator inputs and formatting packets for UART-to-RS485 bridge IC. Use Value: On-chip comparator eliminates external op-amp circuitry; low-power stop mode extends battery life to 2+ years; UART hardware simplifies protocol framing. |
| Office Equipment Subsystem | Security System Keypad |
Use Scenario: Paper jam detection and feed motor coordination in laser printer engine control board. IC Role / Device Role / Timing Role: Dedicated peripheral MCU interfacing with optical sensors and stepper drivers using Timer C for precise timing. Use Value: Input capture on TCIN measures encoder pulses for closed-loop position feedback; 20-pin SDIP eases manual rework during prototyping. |
Use Scenario: Keypad scanner and tamper-detection unit in access control panel with LED status indicators. IC Role / Device Role / Timing Role: Key input interrupt handler (KI0–KI3) scanning matrix and driving 4 LED ports directly. Use Value: Integrated LED drive ports reduce BOM count; key interrupt priority levels prevent missed presses during system activity; 13 GPIO pins support expansion headers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21184DSP#U0 | Same ROM/RAM, identical peripherals, but rated -40°C to +85°C with D suffix - same package and pinout | No functional difference; intended for same industrial use cases requiring extended temperature validation | Select R5F21184DSP#U0 if full D-grade qualification documentation (e.g., AEC-Q200 alignment) is contractually required |
| R5F21194DD#U0 | Includes 2 KB data flash (1 KB ×2 blocks); otherwise identical package, peripherals, and speed | Enables in-field firmware updates and parameter storage - unsuitable where data flash is unnecessary or security-sensitive | Choose R5F21194DD#U0 only when runtime reprogramming or nonvolatile configuration storage is mandatory |
Compared with R5F21184DD#U0, R5F21184DSP#U0 offers identical functionality with formal D-grade certification, while R5F21194DD#U0 adds data flash at the cost of reduced program flash endurance - making R5F21184DD#U0 optimal for fixed-function, cost-sensitive industrial control.
Availability
R5F21184DD#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control modules, and office equipment subsystems requiring stable component supply over extended production lifecycles.
Supply support for R5F21184DD#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 R5F21184DD#U0 - was designed for cost-sensitive, low-power embedded control in appliances, industrial equipment, and consumer electronics with minimal external components.
FAQ
What is the maximum operating frequency of the R5F21184DD#U0?
The R5F21184DD#U0 supports a maximum external clock frequency of 20 MHz (XIN), achieving a 50 ns minimum instruction execution time at VCC = 3.0–5.5 V. Its internal high-speed oscillator is adjustable but rated up to 10 MHz - making the 20 MHz crystal option optimal for performance-critical timing tasks in the R5F21184DD#U0.
Does the R5F21184DD#U0 include data flash memory?
No, the R5F21184DD#U0 belongs to the R8C/18 Group and contains only program flash ROM (16 KB). It lacks the 2 KB data flash found in R8C/19 Group variants like R5F21194DD#U0. This means the R5F21184DD#U0 cannot store runtime-configurable parameters or perform in-application firmware updates without external memory.
What package type is used for the R5F21184DD#U0?
The R5F21184DD#U0 is packaged in a 20-pin molded-plastic SDIP (PRDP0020BA-A), a through-hole package with 300 mil body width and 0.65 mm lead pitch. This package is distinct from the LSSOP (PLSP0020JB-A) and HWQFN (PWQN0028KA-B) options offered for other R8C/18 variants - confirming the R5F21184DD#U0's compatibility with legacy wave-solder assembly lines.
What is the operating temperature range for the R5F21184DD#U0?
The R5F21184DD#U0 is rated for -40°C to +85°C ambient operation (D-grade), validated per Renesas' "Standard" quality classification. This extended range supports deployment in uncontrolled industrial enclosures, outdoor kiosks, and HVAC systems - unlike non-D variants limited to -20°C to +85°C, making the R5F21184DD#U0 suitable for harsher thermal environments.
How many interrupt sources does the R5F21184DD#U0 support?
The R5F21184DD#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 in the FLG register's IPL bits - enabling deterministic response to time-critical events such as motor commutation edges or keypad presses in the R5F21184DD#U0.
R5F21184DD#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-SDIP (0.300", 7.62mm)
- Series:
- R8C/1x/18
- Packaging:
- Bulk
- 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:
- 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:
- Through Hole
- Supplier Device Package:
R5F21184DD#U0 FAQ
1.How can I place an order for R5F21184DD#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21184DD#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 R5F21184DD#U0 reliable?
The price and inventory of R5F21184DD#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21184DD#U0 is usually 5 days.
3.What payment methods are accepted for R5F21184DD#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21184DD#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21184DD#U0?
R5F21184DD#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21184DD#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 R5F21184DD#U0?
For technical support, including R5F21184DD#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21184DD#U0 requirements.
6.How does Aetrix verify that R5F21184DD#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21184DD#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 R5F21184DD#U0 meets industry standards.
7.What is the process for return or replacement of R5F21184DD#U0?
All R5F21184DD#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21184DD#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 R5F21184DD#U0 part is unused and in its original packaging.
Return procedure for R5F21184DD#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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