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Renesas R5F21387CNFP#V0
- Part No.:
- R5F21387CNFP#V0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F21387CNFP#V0.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,046
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Product details
Overview
R5F21387CNFP#V0 from Renesas is a 16-bit R8C CPU core MCU with 48 KB program flash, 4 KB data flash (BGO-capable), 10-bit 20-channel ADC, dual 8-bit DACs, and integrated LIN hardware module. It operates at up to 20 MHz (50 ns min. instruction time) across 1.8–5.5 V supply and targets embedded control in consumer appliances and office equipment.
For engineers reviewing the R5F21387CNFP#V0 datasheet, R5F21387CNFP#V0 pinout, R5F21387CNFP#V0 application, or R5F21387CNFP#V0 equivalent, key selection criteria include its 80-pin LQFP package, real-time clock (Timer RE), low-power stop mode (2.0 µA), and hardware LIN support via UART0 + Timer RA.
Technical Context
The R5F21387CNFP#V0 implements the R8C CPU core with 89 fundamental instructions, 16×16→32-bit multiplier, and multiply-accumulate capability. Its memory map spans 1 Mbyte, with fixed interrupt vector table at 0FFDCh–0FFFFh and data flash blocks A–D mapped to 03000h–03FFFh.
Peripheral integration includes four independent timer units (RA–RD), three UART/serial interfaces (UART0–2 with I²C mode), DTC for autonomous transfers, and voltage detection circuits supporting power-on reset and dual-level monitoring (VDD = 2.7–5.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit core with 89 instructions, 50 ns min. execution at 20 MHz |
| Flash Memory | 48 KB program ROM + 4 KB data flash (4 × 1 KB blocks, BGO supported) |
| ADC/DAC | 10-bit resolution × 20 channels with sample-and-hold; dual 8-bit DAC outputs (DA0/DA1) |
| Timers | Timer RA/RB (8-bit), RC/RD (16-bit × 2), RE (8-bit RTC), RF/RG (16-bit × 2) |
| Serial Interfaces | UART0/1/2 (I²C mode on UART2), SSU, LIN hardware module (UART0 + Timer RA) |
| Supply & Power | 1.8–5.5 V operation; 7.0 mA typical @ 5 V/20 MHz; 2.0 µA stop mode current |
| Package | 80-pin LQFP (PLQP0080KB-A), −20°C to +85°C ambient temperature range |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-A), 12 mm × 12 mm body, 0.5 mm pitch, exposed pad not specified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0–P0_7 | CMOS I/O port with analog input (AN0–AN7), DA0/DA1 output | Configurable digital I/O; AN0/AN7 serve as primary ADC inputs and DAC outputs |
| P1_0–P1_3 | Key input interrupt pins (KI0–KI3) + ADC inputs (AN8–AN11) | Support wake-up from low-power modes via external keypad events |
| P4_2 | Analog reference voltage input (VREF) | Provides external reference for ADC conversion accuracy and comparator B |
| XIN/XOUT | High-frequency crystal oscillator interface (up to 20 MHz) | Enables precise timing for system clock and peripheral synchronization |
| XCIN/XCOUT | 32 kHz crystal oscillator interface | Drives low-power real-time clock (Timer RE) during stop/wait modes |
| RESET | Active-low reset input | Hardware reset initiation; supports power-on reset and voltage monitor assertion |
Key Features
| Feature | Design Value |
|---|---|
| Background Operation (BGO) | Data flash erasure/programming proceeds concurrently with CPU execution, enabling seamless firmware updates |
| Hardware LIN Module | Dedicated LIN 2.0/2.1 support via UART0 and Timer RA eliminates software protocol overhead |
| Low-Power Operating Modes | Wait mode (4.0 µA @ 3 V/32 kHz) and stop mode (2.0 µA @ 3 V) extend battery life in portable systems |
| Voltage Detection Circuits | Three independent voltage monitors (VDD, VDD1, VDD2) with programmable thresholds enable robust brown-out protection |
| Dual 8-bit DAC Outputs | DA0 and DA1 provide independent analog voltage generation for sensor biasing or actuator control |
Applications
| Home Appliance Control | Office Equipment Motor Drive |
|---|---|
Use Scenario: Microcontroller-based washing machine control board managing water level, motor speed, heating, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor PWM (via Timer RD), ADC-based temperature sensing, and LIN communication with display panel. Use Value: Integrated 16-bit timers with complementary PWM and 20-channel ADC reduce external component count and PCB area. | Use Scenario: Laser printer engine controller regulating fuser temperature, paper feed timing, and toner density feedback. IC Role / Device Role / Timing Role: Real-time subsystem controller using Timer RE for accurate seconds-level timing and dual DACs for thermal sensor calibration. Use Value: Hardware LIN interface enables reliable communication with main controller over noisy industrial bus without CPU intervention. |
| Audio System Front Panel | Consumer IoT Sensor Hub |
Use Scenario: Standalone audio amplifier front panel with rotary encoder, LED indicators, and IR remote receiver. IC Role / Device Role / Timing Role: User interface processor handling key input interrupts (KI0–KI3), PWM-driven LED dimming, and UART-based debug logging. Use Value: 75 CMOS I/O ports with selectable pull-ups simplify direct connection to mechanical switches and LEDs without external resistors. | Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and air quality with wireless upload. IC Role / Device Role / Timing Role: Low-power sensor aggregator using stop mode between measurements and ADC sweep mode for multi-channel acquisition. Use Value: 2.0 µA stop mode current and BGO-capable data flash allow long-term field deployment with infrequent firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21388CNFP | 64 KB program ROM, 6 KB data flash, identical peripheral set and pinout | Higher firmware storage capacity required for feature-rich appliance UIs or OTA update buffers | Select when >48 KB code space needed; same PCB layout and driver compatibility |
| R5F21387CDFP | Same memory and peripherals, but −40°C to +85°C operating range (D version) | Industrial or automotive-adjacent environments requiring extended temperature tolerance | Select for harsh ambient conditions; otherwise N version suffices for consumer-grade applications |
Compared with R5F21388CNFP and R5F21387CDFP, the R5F21387CNFP#V0 provides optimal balance of code density, low-power performance, and cost for commercial-grade home/office electronics where extended temperature range or larger flash is unnecessary.
Availability
R5F21387CNFP#V0 is available at Aetrix Electronics and suitable for home appliance control, office equipment motor drive, and audio system front panel applications requiring stable component supply and long-term production continuity.
Supply support for R5F21387CNFP#V0 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and consumer markets.
The R8C/38C Group, including R5F21387CNFP#V0, was designed for cost-sensitive, low-power embedded control in consumer electronics-emphasizing integration of timers, ADCs, serial interfaces, and LIN without external support components.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for the R5F21387CNFP#V0?
The R5F21387CNFP#V0 supports 20 MHz operation at VCC = 2.7–5.5 V, and 5 MHz operation down to VCC = 1.8 V. Minimum instruction execution time is 50 ns under high-voltage/high-frequency conditions, enabling responsive real-time control in appliance and office equipment applications.
Does the R5F21387CNFP#V0 support background operation (BGO) for data flash programming?
Yes, the R5F21387CNFP#V0 includes background operation (BGO) functionality for its 4 KB data flash (1 KB × 4 blocks). This allows flash erase/write operations to proceed concurrently with CPU program execution, enabling seamless firmware updates and parameter storage without halting application logic.
How many analog input channels does the R5F21387CNFP#V0 ADC support, and what is its resolution?
The R5F21387CNFP#V0 integrates a 10-bit successive-approximation ADC with 20 dedicated analog input channels (AN0–AN19), plus sample-and-hold and sweep mode. This supports simultaneous multi-sensor acquisition in home appliance control and environmental monitoring applications.
What peripheral resources enable hardware LIN communication on the R5F21387CNFP#V0?
The R5F21387CNFP#V0 implements a dedicated hardware LIN module using UART0 for serial framing and Timer RA for baud rate generation and sync field timing-fully compliant with LIN 2.0/2.1. No CPU polling or bit-banging is required, ensuring deterministic communication in automotive-adjacent subsystems.
What are the lowest-power operating modes available on the R5F21387CNFP#V0, and their typical current consumption?
The R5F21387CNFP#V0 offers wait mode (4.0 µA @ 3.0 V, 32 kHz XCIN clock) and stop mode (2.0 µA @ 3.0 V). Both retain RAM content and support wake-up via external interrupt or timer event-critical for battery-powered sensor nodes and energy-efficient consumer devices.
R5F21387CNFP#V0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/3x/38C
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 75
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 20x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21387CNFP#V0 FAQ
1.How can I place an order for R5F21387CNFP#V0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21387CNFP#V0 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 R5F21387CNFP#V0 reliable?
The price and inventory of R5F21387CNFP#V0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21387CNFP#V0 is usually 5 days.
3.What payment methods are accepted for R5F21387CNFP#V0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21387CNFP#V0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21387CNFP#V0?
R5F21387CNFP#V0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21387CNFP#V0 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 R5F21387CNFP#V0?
For technical support, including R5F21387CNFP#V0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21387CNFP#V0 requirements.
6.How does Aetrix verify that R5F21387CNFP#V0 is sourced from the original manufacturer or authorized distributors?
All R5F21387CNFP#V0 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 R5F21387CNFP#V0 meets industry standards.
7.What is the process for return or replacement of R5F21387CNFP#V0?
All R5F21387CNFP#V0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21387CNFP#V0, 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 R5F21387CNFP#V0 part is unused and in its original packaging.
Return procedure for R5F21387CNFP#V0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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