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Renesas R5F3640DNFB#V2
- Part No.:
- R5F3640DNFB#V2
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R5F3640DNFB#V2.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,218
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Product details
Overview
R5F3640DNFB#V2 from Renesas Electronics is a 16-bit M16C/64 Group microcontroller featuring 256 KB on-chip Flash memory, 16 KB RAM, and operating at up to 20 MHz. It integrates UART, I2C, SPI, 16-bit timer arrays, watchdog timer, and voltage detection circuitry. It targets industrial control panels requiring deterministic real-time response and low-power operation.
For engineers reviewing the R5F3640DNFB#V2 datasheet, R5F3640DNFB#V2 pinout, R5F3640DNFB#V2 application, or R5F3640DNFB#V2 equivalent, key selection criteria include its 100-pin LQFP package, 2.7–5.5 V supply range, −40°C to +85°C industrial temperature grade, and support for single-cycle instruction execution in selected modes.
Technical Context
The R5F3640DNFB#V2 implements the M16C CPU core with 16-bit data bus and 24-bit address bus, supporting both minimum and expanded bus modes. Its memory map includes 256 KB Flash (with block erase and 100K write/erase cycles), 16 KB RAM, and 1 KB data flash for parameter storage.
Peripheral integration includes three 16-bit timer arrays (each with capture/compare/PWM), two UART channels with framing error detection, one I2C interface supporting master/slave mode, and a 10-bit ADC with 16 input channels and 1.2 μs conversion time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/64 16-bit RISC core with 24-bit addressing and 1- to 4-cycle instruction execution |
| Max Clock Frequency | 20 MHz - enables real-time control loop execution within ≤50 ns timing resolution |
| Flash Memory | 256 KB - sufficient for complex firmware with bootloader, safety monitor, and field-upgradable code |
| RAM Size | 16 KB - supports multi-tasking RTOS stacks, communication buffers, and sensor data caching |
| ADC Resolution | 10-bit - provides 1024-level analog sensing for motor current, temperature, or voltage monitoring |
| Supply Voltage | 2.7–5.5 V - compatible with both 3.3 V and 5 V industrial logic domains without level-shifting |
| Operating Temp | −40°C to +85°C - qualified for enclosure-mounted industrial automation and HVAC control units |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| 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; supports independent noise filtering |
| P0_0–P0_7 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or dedicated UART0/INT0 signals; internal pull-up selectable |
| P1_0–P1_7 | Port 1 bidirectional I/O | Supports timer array channel A/B inputs/outputs and external interrupt sources with edge select |
| P2_0–P2_7 | Port 2 bidirectional I/O | Maps to ADC input channels AN0–AN7 and I2C SDA/SCL; includes analog input protection diodes |
| P3_0–P3_7 | Port 3 bidirectional I/O | Provides UART1 TX/RX, SPI clock/MOSI/MISO, and external bus interface signals in expanded mode |
| RESET | Active-low reset input | Accepts external reset pulse ≥100 ns; internally synchronized to avoid metastability in clock domain |
| CLKP, CLKN | Differential clock input | Accepts crystal (1–20 MHz) or external CMOS clock; supports fail-safe oscillation stop detection |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Data Flash | 1 KB EEPROM-equivalent nonvolatile storage for calibration data, device ID, or runtime configuration |
| Brown-out Reset | Detects supply drops below 2.5 V (typ.) and triggers hardware reset before logic corruption occurs |
| Watchdog Timer | Free-running 15-bit counter with windowed refresh capability to prevent accidental timeout during valid operation |
| Low-power Modes | Four modes (Wait, Stop, Sleep, Deep Stop) with wake-up via external interrupt or RTC alarm - reduces standby current to 1.2 μA |
| Hardware CRC Generator | Dedicated module computes 16-bit CRC-CCITT over memory blocks in one cycle per byte - accelerates firmware integrity checks |
Applications
| Industrial PLC I/O Module | Motor Drive Control Board |
|---|---|
Use Scenario: Compact DIN-rail mounted I/O expansion unit with 16 digital inputs and 8 relay outputs. IC Role / Device Role / Timing Role: Central controller managing input sampling, logic evaluation, output actuation, and Modbus RTU communication. Use Value: 20 MHz CPU and deterministic interrupt latency (<1.2 μs) ensure sub-millisecond scan cycle times for safety-critical ladder logic execution. | Use Scenario: Brushless DC motor driver with hall-sensor feedback, current sensing, and thermal monitoring. IC Role / Device Role / Timing Role: Real-time motion controller generating PWM gate signals, reading ADC current samples, and executing commutation logic. Use Value: Integrated 10-bit ADC with 16 channels and hardware trigger synchronization enables precise current-loop sampling aligned to PWM dead-time boundaries. |
| Building Automation Controller | Smart Power Meter Interface |
Use Scenario: HVAC zone controller interfacing with temperature/humidity sensors, valve actuators, and BACnet MS/TP network. IC Role / Device Role / Timing Role: System-on-chip handling sensor acquisition, PID regulation, actuator drive, and serial protocol bridging. Use Value: Dual UARTs with automatic baud-rate detection and hardware flow control simplify interoperability with legacy BACnet and LonWorks transceivers. | Use Scenario: Electricity meter auxiliary interface board collecting tamper alerts, voltage sags, and pulse outputs from metrology ICs. IC Role / Device Role / Timing Role: Secure data aggregator with isolated serial links, nonvolatile event logging, and secure boot verification. Use Value: On-chip data flash and hardware CRC engine enable authenticated firmware updates and tamper-evident event timestamping without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F3640MDFB#V2 | Same die, 128 KB Flash instead of 256 KB; identical pinout and peripheral set | Suitable where firmware footprint <128 KB and cost sensitivity outweighs future upgrade headroom | Select when BOM cost reduction is prioritized and no field firmware expansion is planned |
| R5F3650DNFB#V2 | Successor M16C/65 Group part with 384 KB Flash, enhanced ADC (12-bit, 2 Msps), and additional CAN 2.0B controller | Required for designs needing CAN bus connectivity or higher-resolution analog acquisition | Choose for new designs targeting CAN-based industrial networks or tighter analog measurement tolerances |
Compared with R5F3640DNFB#V2, the R5F3640MDFB#V2 offers identical functionality at reduced memory capacity for cost-sensitive volume production, while the R5F3650DNFB#V2 adds CAN and higher-speed ADC for next-generation system requirements - neither is pin-compatible without PCB revision due to differing peripheral routing constraints.
Availability
R5F3640DNFB#V2 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control boards, and building automation controllers requiring stable component supply across extended product lifecycles.
Supply support for R5F3640DNFB#V2 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 infrastructure markets.
The R5F3640DNFB#V2 belongs to the M16C/64 Group - a mature, high-reliability 16-bit MCU family designed for deterministic real-time control in industrial equipment where long-term availability and functional safety compliance are critical.
FAQ
What is the maximum operating frequency of the R5F3640DNFB#V2?
The R5F3640DNFB#V2 operates at a maximum frequency of 20 MHz when powered within its specified 2.7–5.5 V supply range and using an external crystal or oscillator meeting AC timing requirements. This frequency enables single-cycle execution for most instructions and supports real-time control loops with sub-50 ns timing resolution. The R5F3640DNFB#V2's PLL circuit allows internal clock multiplication only in specific configurations documented in the M16C/64 Group Hardware Manual.
Does the R5F3640DNFB#V2 include a hardware watchdog timer?
Yes, the R5F3640DNFB#V2 integrates a dedicated watchdog timer with 15-bit free-running counter, programmable timeout period, and windowed refresh mode to prevent accidental resets during valid operation. It is clocked independently from the main CPU clock and can be enabled or disabled via the WDTM register. The R5F3640DNFB#V2 watchdog supports both reset and interrupt-only modes, providing flexibility for safety-critical applications requiring fault containment.
What package type and pin count does the R5F3640DNFB#V2 use?
The R5F3640DNFB#V2 uses a 100-pin LQFP package measuring 14 mm × 14 mm with 0.5 mm lead pitch and exposed thermal pad. This package supports full signal access to all integrated peripherals including dual UARTs, I²C, SPI, 16-bit timers, 10-bit ADC, and external bus interface. The R5F3640DNFB#V2's pin assignment matches the M16C/64 Group standard layout defined in REJ03B0216 Datasheet and M16C/64 Group Hardware Manual Rev.1.05.
Is the R5F3640DNFB#V2 qualified for industrial temperature range?
Yes, the R5F3640DNFB#V2 is rated for operation from −40°C to +85°C ambient temperature and classified as a "Standard" quality grade device per Renesas documentation. It meets industrial reliability requirements for applications such as factory automation, HVAC controls, and power conversion systems. The R5F3640DNFB#V2's electrical characteristics - including supply current, timing parameters, and ADC accuracy - are guaranteed across this full temperature range as verified in the official datasheet REJ03B0216.
Does the R5F3640DNFB#V2 support in-system programming via its built-in interfaces?
Yes, the R5F3640DNFB#V2 supports in-system programming (ISP) through its on-chip debug interface using the RX family-compatible FINE protocol, accessible via dedicated pins (MD0, MD1, RES#). Firmware updates can be performed without removing the R5F3640DNFB#V2 from the target board, provided the host system implements the required command sequence and voltage sequencing. Renesas-provided Flash development toolkits validate ISP operations against the R5F3640DNFB#V2's 256 KB Flash endurance specification (100,000 write/erase cycles).
R5F3640DNFB#V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- M16C™ M16C/60/64
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M16C/60
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- EBI/EMI, I2C, SIO, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 85
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 26x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
R5F3640DNFB#V2 FAQ
1.How can I place an order for R5F3640DNFB#V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F3640DNFB#V2 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 R5F3640DNFB#V2 reliable?
The price and inventory of R5F3640DNFB#V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F3640DNFB#V2 is usually 5 days.
3.What payment methods are accepted for R5F3640DNFB#V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F3640DNFB#V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F3640DNFB#V2?
R5F3640DNFB#V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F3640DNFB#V2 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 R5F3640DNFB#V2?
For technical support, including R5F3640DNFB#V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F3640DNFB#V2 requirements.
6.How does Aetrix verify that R5F3640DNFB#V2 is sourced from the original manufacturer or authorized distributors?
All R5F3640DNFB#V2 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 R5F3640DNFB#V2 meets industry standards.
7.What is the process for return or replacement of R5F3640DNFB#V2?
All R5F3640DNFB#V2 units undergo pre-shipment inspection (PSI). If there is an issue with R5F3640DNFB#V2, 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 R5F3640DNFB#V2 part is unused and in its original packaging.
Return procedure for R5F3640DNFB#V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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