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Renesas R5F2L387BNFP#U1
- Part No.:
- R5F2L387BNFP#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F2L387BNFP#U1.pdf
- Description:
- 16-BIT, FLASH, R8C CPU
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
R5F2L387BNFP#U1 from Renesas Electronics is an 8-bit R8C/L38B Group microcontroller featuring the R8C CPU core, 48 KB program ROM, 6 KB RAM, and no data flash. It delivers 50 ns minimum instruction execution at 20 MHz (VCC = 2.7–5.5 V), supports 68 programmable CMOS I/O pins with 8 high-current drive outputs, and integrates LCD segment drive (up to 48 pins) and real-time clock functionality - deployed in industrial control panels requiring low-power, integrated display management.
For engineers reviewing the R5F2L387BNFP#U1 datasheet, R5F2L387BNFP#U1 pinout, R5F2L387BNFP#U1 application, or R5F2L387BNFP#U1 equivalent, key selection criteria include its -40°C to +85°C operating range (D version), 10-bit × 16-channel ADC, hardware LIN interface (using Timer RA and UART0), and support for wait/stop/power-off low-power modes with sub-µA current draw.
Technical Context
The R5F2L387BNFP#U1 implements the R8C CPU core with 89 fundamental instructions and a 16×16→32-bit hardware multiplier, enabling efficient signal processing in resource-constrained embedded systems. Its clock system includes four independent sources: external XIN (up to 20 MHz), 32 kHz XCIN, high-speed on-chip oscillator (with frequency adjustment), and low-speed on-chip oscillator - all selectable via software-controlled dividers (1/2/4/8/16).
Peripheral integration centers on mixed-signal control: Timer RD provides three-phase PWM with complementary output and reset-synchronous modulation; UART2 supports I²C-bus mode and multiprocessor communication; and the DTC (Data Transfer Controller) enables autonomous memory-to-peripheral transfers triggered by 38 sources - reducing CPU load during sensor data acquisition or display refresh cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 8-bit core with 89 instructions, 16×16→32-bit multiplier, 1 Mbyte address space - enables compact code and deterministic math operations without external coprocessor. |
| Memory | 48 KB program ROM, 6 KB RAM, no data flash - sufficient for mid-complexity firmware with runtime variables but excludes in-field BGO reprogramming capability. |
| Operating Range | -40°C to +85°C (D version), 1.8–5.5 V supply - validated for extended-temperature industrial environments including HVAC controllers and factory HMI panels. |
| Power Consumption | Typ. 7 mA @ 5 V/20 MHz; 3.5 µA in wait mode (32 kHz); 1 µA in power-off mode with timer RE active - supports battery-backed real-time clock operation for >1 year on coin cell. |
| ADC | 10-bit resolution × 16 channels with sample-and-hold and sweep mode - captures analog sensor inputs (e.g., temperature, pressure) across multiple points without CPU intervention. |
| LCD Driver | Up to 8 common / 48 segment outputs, 1/2 or 1/3 bias, static/1/2/1/3/1/4 duty - drives alphanumeric or segmented displays directly, eliminating external driver ICs in appliance UIs. |
| Timers | Timer RA (8-bit), RB (8-bit), RC (16-bit, 3-PWM), RD (16-bit ×2, 6-PWM + 3-phase), RE (real-time clock), RG (16-bit) - supports motor control, LED dimming, and calendar-based scheduling in single-chip designs. |
Pinout & Package
Package: 80-pin LQFP (PLQP0080JA-A), 12 × 12 mm body, 0.5 mm pitch, exposed thermal pad - compatible with standard reflow profiles and supports thermal dissipation up to 1.2 W in industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs per side ensure stable core and I/O rail decoupling; thermal pad improves heat transfer in continuous operation. |
| XIN, XOUT | External crystal oscillator input/output | Supports 1–20 MHz crystals for precise timing; internal feedback resistor enables direct connection without external components. |
| XCIN, XCOU | 32.768 kHz watch crystal interface | Enables accurate real-time clock operation independent of main system clock - critical for time-stamped logging or alarm scheduling. |
| P00–P07 | Programmable I/O port (8-bit) | Segment output capable (SEG0–SEG7); configurable as general-purpose I/O or LCD segments - simplifies display wiring in consumer electronics. |
| P20–P23 | Programmable I/O port (4-bit) | Segment output capable (SEG20–SEG23); shared with Timer RA and INT0–INT3 - enables interrupt-driven keypad scanning with display update synchronization. |
| P30–P37 | Programmable I/O port (8-bit) | Segment output capable (SEG24–SEG31); supports key input interrupt function - allows matrix keypad interfacing while driving LCD segments on same port group. |
| P40–P47 | Programmable I/O port (8-bit) | Segment output capable (SEG32–SEG39); includes ADC input channels AN0–AN7 - enables analog sensor monitoring alongside display control on shared pins. |
| P60–P67 | Programmable I/O port (8-bit) | Segment output capable (SEG44–SEG51); supports Timer RD PWM outputs - permits direct drive of backlight LEDs or motor phases using same port. |
| P70–P73 | Common output (COM0–COM3) | Dedicated LCD common driver outputs; support up to 4 commons - matches 4-digit 7-segment or small character LCD modules. |
| VL1–VL4 | LCD bias voltage supply | Integrated voltage multiplier and regulator generate required LCD bias voltages - eliminates need for external charge pumps in portable devices. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Single-channel LIN 2.1 compliant transceiver implemented via UART0 and Timer RA - reduces BOM count and software stack complexity in automotive body electronics and industrial sensor networks. |
| Background Debug Interface | On-chip debug with flash rewrite capability - enables field firmware updates and real-time variable inspection without external JTAG emulator, accelerating development and maintenance cycles. |
| Voltage Detection Circuit | Configurable power-on reset and dual-level voltage detection (VDD monitor) - prevents erratic operation during brown-out conditions in unregulated power supplies used in white goods. |
| DTC (Data Transfer Controller) | 1-channel autonomous DMA supporting 38 activation sources and repeat/normal transfer modes - offloads ADC-to-memory or UART-to-buffer transfers, freeing CPU for control logic in real-time applications. |
| Low-Power Operating Modes | Wait (3.5 µA), stop (2 µA), and power-off (0.02 µA) modes with selective peripheral wake-up - extends battery life in remote monitoring nodes where periodic sensor reads dominate power budget. |
Applications
| Industrial Control Panel | Home Appliance UI |
|---|---|
|
Use Scenario: Front-panel interface for HVAC or PLC with 4-digit LCD, keypad, temperature sensors, and relay drivers. IC Role / Device Role / Timing Role: Central controller managing display refresh, key scan, ADC sampling, and real-time scheduling via Timer RE. Use Value: Integrated LCD driver and 16-channel ADC eliminate external components; 68 I/O pins accommodate expansion headers and diagnostics LEDs without glue logic. |
Use Scenario: Microwave oven or washing machine control board requiring segmented display, touch/key inputs, and motor timing. IC Role / Device Role / Timing Role: Main MCU executing safety-critical state machine, generating PWM for fan/motor control, and driving 48-segment display. Use Value: Timer RD's complementary PWM and reset-synchronous mode enable precise 3-phase motor commutation; LIN module supports remote sensor node communication. |
| Portable Medical Device | Smart Energy Meter |
|
Use Scenario: Battery-powered blood glucose meter with LCD readout, button interface, and analog sensor interface. IC Role / Device Role / Timing Role: Low-power manager handling sensor excitation, ADC conversion, display update, and RTC-based test expiration tracking. Use Value: 1 µA power-off mode with active Timer RE ensures >1-year shelf life on CR2032; integrated voltage detection guards against inaccurate readings during low battery. |
Use Scenario: DIN-rail mounted electricity meter with LCD display, pulse output, and tamper detection inputs. IC Role / Device Role / Timing Role: System controller acquiring voltage/current samples via ADC, updating LCD with kWh data, and managing optical pulse output timing. Use Value: Hardware LIN interface enables secure firmware updates over existing meter bus infrastructure; 8 high-current I/O pins drive relays and status LEDs directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F2L388BNFP#U1 | 64 KB program ROM, 8 KB RAM - identical package, peripherals, and temperature grade. | Higher firmware capacity for added communication stacks (e.g., Modbus RTU) or larger UI assets. | Select when firmware size exceeds 48 KB or future feature expansion is planned without PCB change. |
| R5F2L38ABNFP#U1 | 96 KB program ROM, 10 KB RAM - same pinout and peripheral set as R5F2L387BNFP#U1. | Supports complex algorithms (e.g., PID auto-tuning) and dual-display buffering in advanced HMI designs. | Choose for next-generation products requiring headroom in code space and RAM without redesigning layout. |
Compared with R5F2L387BNFP#U1, the R5F2L388BNFP#U1 and R5F2L38ABNFP#U1 offer scalable memory while preserving identical I/O structure, LCD capabilities, and low-power behavior - enabling seamless migration paths within the R8C/L38B family for evolving product requirements.
Availability
R5F2L387BNFP#U1 is available at Aetrix Electronics and suitable for industrial control panels, home appliance user interfaces, and portable medical devices requiring stable component supply, extended temperature operation, and integrated LCD driving capability.
Supply support for R5F2L387BNFP#U1 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, power, and SoC solutions for industrial, automotive, and IoT applications.
The R8C/L38B Group, including R5F2L387BNFP#U1, was designed for cost-sensitive, low-power embedded systems requiring integrated LCD control, analog sensing, and real-time responsiveness - targeting appliance, industrial HMI, and portable instrumentation markets.
FAQ
What is the maximum operating frequency and supply voltage range for R5F2L387BNFP#U1?
R5F2L387BNFP#U1 operates at up to 20 MHz with VCC = 2.7–5.5 V, or at 5 MHz down to 1.8 V. The minimum instruction execution time is 50 ns under full-speed conditions, enabling responsive real-time control in applications like motor timing and sensor polling.
Does R5F2L387BNFP#U1 include data flash memory?
No, R5F2L387BNFP#U1 belongs to the R8C/L38B Group, which does not include data flash. Unlike the A-series variants (e.g., R5F2L387ANFP), this part relies solely on program ROM and RAM for data storage - requiring external EEPROM or FRAM if non-volatile parameter retention is needed.
Which package type and pin count does R5F2L387BNFP#U1 use?
R5F2L387BNFP#U1 uses an 80-pin LQFP package (PLQP0080JA-A) with 0.5 mm pitch and an exposed thermal pad. This package supports 68 programmable I/O pins, 8 high-current drive outputs, and dedicated LCD segment/common terminals - optimized for compact industrial PCB layouts.
Can R5F2L387BNFP#U1 drive a 48-segment LCD display directly?
Yes, R5F2L387BNFP#U1 integrates an LCD drive control circuit supporting up to 8 common and 48 segment outputs with 1/2 or 1/3 bias and static/1/2/1/3/1/4 duty options. Its built-in voltage multiplier and regulator eliminate external bias generation, enabling direct connection to standard segmented LCD modules.
What low-power modes are supported by R5F2L387BNFP#U1, and what are their typical current draws?
R5F2L387BNFP#U1 supports wait mode (3.5 µA @ 3 V, 32 kHz), stop mode (2 µA), and power-off mode (1 µA with Timer RE enabled; 0.02 µA with Timer RE disabled). These modes allow extended battery life in portable applications while maintaining real-time clock accuracy or fast wake-up response.
R5F2L387BNFP#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- R8C/Lx/38B
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- LCD, POR, PWM, Voltage Detect, WDT
- Number of I/O:
- 68
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 16x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F2L387BNFP#U1 FAQ
1.How can I place an order for R5F2L387BNFP#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F2L387BNFP#U1 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 R5F2L387BNFP#U1 reliable?
The price and inventory of R5F2L387BNFP#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F2L387BNFP#U1 is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F2L387BNFP#U1 transactions.
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R5F2L387BNFP#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F2L387BNFP#U1 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 R5F2L387BNFP#U1?
For technical support, including R5F2L387BNFP#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F2L387BNFP#U1 requirements.
6.How does Aetrix verify that R5F2L387BNFP#U1 is sourced from the original manufacturer or authorized distributors?
All R5F2L387BNFP#U1 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 R5F2L387BNFP#U1 meets industry standards.
7.What is the process for return or replacement of R5F2L387BNFP#U1?
All R5F2L387BNFP#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R5F2L387BNFP#U1, 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 R5F2L387BNFP#U1 part is unused and in its original packaging.
Return procedure for R5F2L387BNFP#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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