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Renesas R5F21183SP#U0
- Part No.:
- R5F21183SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F21183SP#U0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,854
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Product details
Overview
R5F21183SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/18 Group, featuring 12 KB flash ROM, 768 bytes RAM, and an R8C/Tiny Series CPU core operating at up to 20 MHz (50 ns min instruction time). It integrates Timer X/Z (8-bit), Timer C (16-bit), UART + clock-synchronous serial I/O, 4-channel 1-bit comparator, watchdog timer, and 13 I/O pins - used in appliance control, sensor interfaces, and industrial embedded systems.
For engineers reviewing the R5F21183SP#U0 datasheet, R5F21183SP#U0 pinout, R5F21183SP#U0 application, or R5F21183SP#U0 equivalent, this page delivers verified specifications, package mapping to PLSP0020JB-A (20-pin LSSOP), validated pin functions, real-world use cases, and two confirmed alternative parts with documented technical differences.
Technical Context
The R5F21183SP#U0 implements a silicon-gate CMOS R8C/Tiny CPU with 89 fundamental instructions and a 1 Mbyte address space. Its memory architecture includes on-chip flash ROM (12 KB) and RAM (768 B), with SFRs mapped to 00000h–002FFh and interrupt vectors fixed at 0FFDCh–0FFFFh.
Peripheral integration includes dual serial interfaces (UART + clock-sync I/O), three independent timers with prescalers, a 4-channel comparator, on-chip oscillators (high-speed adjustable and low-speed), power-on reset, voltage detection, and oscillation stop detection - all supporting single-chip operation without external support components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, 50 ns min execution time @ 20 MHz |
| Memory | 12 KB flash ROM (program), 768 bytes RAM - sufficient for mid-complexity firmware with data buffering |
| Timers | Timer X/Z (8-bit × 2), Timer C (16-bit) with input capture/output compare - supports PWM generation and event timing |
| Serial Interfaces | 1× UART + 1× clock-synchronous serial I/O - enables host communication and peripheral daisy-chaining |
| Comparator | 1-bit comparator × 4 channels - provides fast analog threshold detection without ADC overhead |
| Supply Range | VCC = 3.0–5.5 V @ 20 MHz; 2.7–5.5 V @ 10 MHz - compatible with standard 3.3 V and 5 V system rails |
| Power Modes | Wait mode: 35 µA @ 3.0 V; Stop mode: 0.7 µA - enables battery-backed low-power sensing |
| Operating Temp | −20°C to +85°C - qualified for commercial/industrial ambient environments |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | Multi-function I/O port | Configurable as key interrupt input, analog comparator channel 0, or general-purpose I/O with LED drive capability |
| P1_4 / TXD0 | UART transmit output | Drives serial data output for primary UART interface; CMOS-level compatible with RS-232 transceivers |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input | Accepts serial data input; also serves as counter/timer input or external interrupt source |
| P3_3 / TCIN / INT3 / CMP1_0 | Timer C input | Accepts external event pulses for capture or gating; doubles as interrupt or comparator input |
| XIN / P4_6 | Main clock oscillator input | Connects to crystal or ceramic resonator (1–20 MHz); internal feedback resistor eliminates external component |
| RESET | Active-low reset input | Asynchronous reset assertion halts CPU, clears registers, and restarts from vector 0FFDCh |
| MODE | Boot mode select | Must be pulled high via resistor to enable normal flash execution; determines startup configuration |
| VCC / AVCC | Power supply | Dual-supply pin: powers digital logic and analog comparator circuitry; requires local decoupling |
| VSS / AVSS | Ground reference | Common return for digital and analog sections; separation improves noise immunity for comparator inputs |
| VREF | Comparator reference input | Accepts external voltage (0–VCC) to set comparison threshold for all four comparator channels |
Key Features
| Feature | Design Value |
|---|---|
| On-chip high-speed oscillator | Adjustable frequency reduces need for external crystal while maintaining timing accuracy for UART baud rates |
| LED drive ports (P1_0–P1_3) | Direct sink/source capability eliminates external drivers for status indicators and simple displays |
| Flash programming voltage | VCC = 2.7–5.5 V - enables in-system programming without dedicated HV supply or external programmer |
| Watchdog timer with protection | 15-bit counter with prescaler and count-source lock prevents accidental disable during firmware updates |
| Oscillation stop detection | Monitors XIN/XOUT activity and triggers reset if main clock fails - critical for fail-safe operation |
| 7-level interrupt priority | Hardware-enforced nesting allows deterministic response to time-critical events like sensor interrupts or UART framing errors |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Microcontroller in washing machine main board managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central control unit executing state-machine logic, reading analog pressure sensors via comparator, and driving display LEDs directly. Use Value: Integrated LED drive and 4-channel comparator eliminate discrete components; 12 KB flash accommodates multi-cycle wash algorithms and safety checks. |
Use Scenario: Compact environmental monitor measuring temperature, humidity, and door-open status in HVAC ducts. IC Role / Device Role / Timing Role: Data acquisition node with wake-on-interrupt, periodic UART reporting, and low-power stop-mode operation between readings. Use Value: 0.7 µA stop-mode current extends battery life; UART + clock-sync I/O supports both wired diagnostics and daisy-chained sensor networks. |
| Office Equipment Power Management | Security System Keypad Controller |
Use Scenario: Standby power supervisor in multifunction printer controlling sleep/wake transitions and USB enumeration. IC Role / Device Role / Timing Role: System manager monitoring AC detect, USB activity, and button presses; initiates full-power boot sequence on demand. Use Value: Key interrupt inputs (KI0–KI3) provide immediate wake from 35 µA wait mode; on-chip voltage detector ensures clean reset during brown-out. |
Use Scenario: Keypad scanner and alarm trigger in residential security panel with tamper detection and buzzer control. IC Role / Device Role / Timing Role: Real-time keypad matrix scanner using P1_0–P1_3 as LED-driven outputs and P3_3–P3_5 as input rows with comparator-assisted edge detection. Use Value: Hardware comparator channels replace software debouncing; 7-level interrupt priority ensures immediate response to panic-button press over background tasks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21182SP | 8 KB flash, 512 bytes RAM - 4 KB less program memory and 256 B less RAM than R5F21183SP#U0 | Suitable for simpler firmware with fewer features or smaller code footprint | Select when application fits within 8 KB and does not require extended data buffers or complex state machines |
| R5F21184SP | 16 KB flash, 1 KB RAM - 4 KB more program memory and 256 B more RAM than R5F21183SP#U0 | Required for larger firmware images, bootloader support, or applications needing additional variable space | Choose when future firmware expansion, OTA updates, or enhanced diagnostics justify higher memory cost |
Compared with R5F21182SP and R5F21184SP, the R5F21183SP#U0 offers balanced memory capacity for mid-tier appliance and industrial control - avoiding under-provisioning of R5F21182SP while delivering better cost efficiency than R5F21184SP where full 16 KB is unused.
Availability
R5F21183SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment power management requiring stable component supply across production lifecycles.
Supply support for R5F21183SP#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 markets.
The R8C/18 Group, including R5F21183SP#U0, was designed for cost-sensitive, low-power embedded control in consumer and industrial equipment - emphasizing integration, ease of programming, and robustness in non-automotive environments.
FAQ
What is the maximum operating frequency of the R5F21183SP#U0?
The R5F21183SP#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 either an external crystal/resonator on XIN/XOUT or the internal high-speed oscillator with frequency adjustment capability.
Does the R5F21183SP#U0 include data flash memory?
No, the R5F21183SP#U0 belongs to the R8C/18 Group and contains only program flash memory (12 KB). Data flash (1 KB × 2 blocks) is exclusive to the R8C/19 Group, such as R5F21193SP. The R5F21183SP#U0 relies on RAM or external EEPROM for non-volatile data storage.
Which package does the R5F21183SP#U0 use, and is it RoHS compliant?
The R5F21183SP#U0 uses the PLSP0020JB-A 20-pin LSSOP package. Per Renesas documentation and EU RoHS Directive compliance statements, this part is lead-free and RoHS compliant - confirmed by Renesas' environmental data sheets and distributor certifications.
Can the R5F21183SP#U0 drive LEDs directly?
Yes, the R5F21183SP#U0 supports direct LED driving on ports P1_0 through P1_3. These pins are designated as LED drive ports in the datasheet and can source/sink sufficient current for standard indicator LEDs without external transistors or drivers.
What debug and programming interfaces are supported by the R5F21183SP#U0?
The R5F21183SP#U0 supports on-chip debugging and flash programming via the single-wire FINE interface using Renesas E8/E8a debuggers. No JTAG port is present; programming voltage is supplied through VCC (2.7–5.5 V), eliminating need for external HV signals.
R5F21183SP#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:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 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:
R5F21183SP#U0 FAQ
1.How can I place an order for R5F21183SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21183SP#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 R5F21183SP#U0 reliable?
The price and inventory of R5F21183SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21183SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21183SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21183SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21183SP#U0?
R5F21183SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21183SP#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 R5F21183SP#U0?
For technical support, including R5F21183SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21183SP#U0 requirements.
6.How does Aetrix verify that R5F21183SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21183SP#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 R5F21183SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21183SP#U0?
All R5F21183SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21183SP#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 R5F21183SP#U0 part is unused and in its original packaging.
Return procedure for R5F21183SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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