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Renesas R5F3640DDFA#UE
- Part No.:
- R5F3640DDFA#UE
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R5F3640DDFA#UE.pdf
- Description:
- IC MICROCONTROLLER
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Product details
Overview
R5F3640DDFA#UE 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 R5F3640DDFA#UE datasheet, R5F3640DDFA#UE pinout, R5F3640DDFA#UE application, or R5F3640DDFA#UE equivalent, key selection criteria include its 100-pin LQFP package, 2.7–5.5 V supply range, −40 to +85 °C industrial temperature grade, and integrated peripheral set supporting standalone embedded control without external support ICs.
Technical Context
The R5F3640DDFA#UE implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both minimum and maximum system modes via external bus interface. Its clock generation supports main crystal (1–20 MHz), sub-crystal (32.768 kHz), and on-chip oscillator options with programmable PLL multiplication.
It features dual interrupt priority levels (IPL0–IPL7), 128 vector interrupts, and dedicated hardware for fast context switching. The voltage detection circuit provides brown-out reset and low-voltage detection interrupt with user-selectable thresholds (2.7 V, 3.0 V, 3.3 V, 3.6 V, 4.0 V, 4.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M16C/60 16-bit CISC CPU with 24-bit addressing and 16 MB address space |
| Flash Memory | 256 KB on-chip flash with 100,000 write/erase cycles and 20-year data retention |
| RAM Size | 16 KB on-chip RAM, fully accessible during all operating modes including wait/stop |
| Max Operating Frequency | 20 MHz at VCC = 4.5–5.5 V; 10 MHz at VCC = 2.7–3.6 V - defines real-time instruction throughput |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct interface with 3.3 V logic and legacy 5 V systems |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade environmental robustness |
| I/O Pins | 81 CMOS bidirectional I/O pins with individually configurable pull-up resistors and noise filter |
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 ensure stable core and I/O rail decoupling; separate analog ground not present |
| XT1, XT2 | Main system clock input | Accepts 1–20 MHz crystal or external clock; internal feedback resistor enables crystal oscillation without external components |
| RESET | Active-low reset input | Asynchronous edge-triggered reset; internal pull-up ensures defined state on power-up |
| P00–P07 | Port 0 I/O | 8-bit port with alternate functions including UART0 TX/RX, I2C SCL/SDA, and timer output capture |
| P30–P37 | Port 3 I/O | Supports external bus interface (AD0–AD7, A8–A15) in maximum mode; also configurable as general-purpose I/O |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully compliant with Renesas E8/E8a debug protocol - enables non-intrusive breakpointing, memory inspection, and real-time trace without ICE hardware |
| Low-power modes | Wait mode (CPU halted, peripherals active) and Stop mode (all clocks stopped except sub-oscillator) - reduces current to 1.2 µA typical in Stop |
| Peripheral integration | Three 16-bit timer arrays (each with 4 channels), two UARTs, one I2C, one SPI, 12-bit ADC (8 channels), and 8-channel DMA controller - eliminates need for discrete timing/interface ICs |
| Memory protection | Flash lock-bit security prevents unauthorized read/write access to program memory - protects firmware IP in deployed devices |
| Reset sources | Hardware reset, power-on reset, brown-out reset, watchdog timer reset, oscillation stop detection, and software reset - ensures reliable recovery from fault conditions |
Applications
| Industrial HMI Panel | Motor Drive Controller |
|---|---|
Use Scenario: Standalone touch-based operator interface for PLC-connected machinery with local data logging and alarm management. IC Role / Device Role / Timing Role: Primary MCU executing UI rendering, serial protocol translation (Modbus RTU over UART), and real-time event handling. Use Value: Integrated 256 KB flash stores full GUI assets and firmware; 81 GPIOs support direct matrix keypad and LED status bank interfacing without glue logic. | Use Scenario: Closed-loop speed/torque control of 3-phase BLDC motors in HVAC blowers and conveyor drives. IC Role / Device Role / Timing Role: Real-time motor commutation engine using PWM outputs synchronized to ADC sampling of phase currents. Use Value: Three independent 16-bit timer arrays provide precise 6-channel complementary PWM with dead-time insertion and fault input capture - meets IEC 60335 safety timing requirements. |
| Smart Energy Meter | Building Automation Node |
Use Scenario: DIN-rail mounted electricity meter with pulse counting, tariff switching, and RS-485 communication to central BMS. IC Role / Device Role / Timing Role: System controller managing metrology IC interface (SPI), tamper detection inputs, and secure timekeeping via sub-oscillator. Use Value: Built-in voltage detector with programmable threshold triggers brown-out reset before EEPROM corruption occurs; 12-bit ADC monitors auxiliary supply rails. | Use Scenario: Distributed sensor node aggregating temperature, humidity, and CO₂ readings for HVAC optimization in commercial buildings. IC Role / Device Role / Timing Role: Low-power coordinator collecting I2C sensor data, buffering logs in RAM, and transmitting via UART to gateway every 15 minutes. Use Value: Stop mode current of 1.2 µA extends battery life beyond 5 years on CR2032; integrated UART auto-baud detects variable gateway transmission rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F3640CDFA#UE | Same package and pinout; reduced flash (128 KB) and RAM (8 KB); identical peripheral set and clock architecture | Suitable for cost-sensitive designs with smaller firmware footprint and fewer runtime variables | Select when application code size remains under 110 KB and RAM usage stays below 7 KB |
| R5F3640EDFA#UE | Same package and pinout; increased flash (512 KB) and RAM (32 KB); otherwise identical electrical and functional specifications | Required for complex control algorithms, OTA update partitions, or extended data logging buffers | Select when firmware exceeds 230 KB or real-time task stack depth demands >24 KB RAM |
Compared with R5F3640CDFA#UE and R5F3640EDFA#UE, the R5F3640DDFA#UE offers balanced memory capacity for mid-complexity industrial firmware - avoiding flash over-provisioning while retaining headroom for field updates and diagnostic data storage.
Availability
R5F3640DDFA#UE is available at Aetrix Electronics and suitable for industrial HMI panels, motor drive controllers, smart energy meters, and building automation nodes requiring stable component supply across multi-year production cycles.
Supply support for R5F3640DDFA#UE 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The M16C/64 Group, including the R5F3640DDFA#UE, was designed for deterministic real-time control in resource-constrained industrial equipment - emphasizing low-latency interrupt response, integrated analog interfaces, and long-lifecycle availability.
FAQ
What is the maximum operating frequency of the R5F3640DDFA#UE and under what voltage conditions?
The R5F3640DDFA#UE operates at up to 20 MHz when supplied with 4.5–5.5 V, and at up to 10 MHz when supplied with 2.7–3.6 V. This dual-frequency capability allows system designers to optimize performance versus power consumption based on rail availability. The R5F3640DDFA#UE uses an internal PLL to multiply the input clock, enabling stable high-speed execution even with low-frequency crystals.
Does the R5F3640DDFA#UE support in-circuit debugging, and what interface is required?
Yes, the R5F3640DDFA#UE supports full in-circuit debugging via the on-chip E8/E8a debug interface using the standard 14-pin JTAG connector. This enables real-time breakpoints, register inspection, and flash programming without requiring external emulators. The R5F3640DDFA#UE debug module is fully compatible with Renesas CS+ and e2 studio IDEs, and does not consume any user I/O pins during debugging sessions.
What are the supported low-power modes of the R5F3640DDFA#UE and their typical current consumption?
The R5F3640DDFA#UE supports Wait mode (CPU halted, peripherals active) and Stop mode (all clocks stopped except sub-oscillator). Typical current in Wait mode is 250 µA at 5 V/25 °C; in Stop mode it drops to 1.2 µA with sub-oscillator running. Both modes retain full RAM content and allow wake-up via external interrupt or RTC alarm. The R5F3640DDFA#UE enters these modes via dedicated instructions and requires no external circuitry.
How many I/O pins does the R5F3640DDFA#UE have, and are they individually configurable?
The R5F3640DDFA#UE provides 81 CMOS bidirectional I/O pins, each configurable as general-purpose I/O or assigned to one of multiple peripheral functions (UART, I²C, timer outputs, ADC inputs, etc.). Each pin supports individual pull-up enable/disable, noise filter activation, and drive strength selection. The R5F3640DDFA#UE does not support open-drain configuration on all pins - only designated ports (e.g., P0 for I²C) support it.
Is the R5F3640DDFA#UE qualified for automotive applications?
No, the R5F3640DDFA#UE is rated for industrial temperature range (−40 to +85 °C) and classified as "Standard" quality grade per Renesas documentation. It is not AEC-Q100 qualified and lacks automotive-specific features such as enhanced ESD immunity, extended temperature screening, or failure-in-time (FIT) rate reporting. For automotive use, Renesas recommends RH850 or RL78/F1x families instead of the R5F3640DDFA#UE.
R5F3640DDFA#UE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
R5F3640DDFA#UE FAQ
1.How can I place an order for R5F3640DDFA#UE through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F3640DDFA#UE 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 R5F3640DDFA#UE reliable?
The price and inventory of R5F3640DDFA#UE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F3640DDFA#UE is usually 5 days.
3.What payment methods are accepted for R5F3640DDFA#UE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F3640DDFA#UE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F3640DDFA#UE?
R5F3640DDFA#UE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F3640DDFA#UE 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 R5F3640DDFA#UE?
For technical support, including R5F3640DDFA#UE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F3640DDFA#UE requirements.
6.How does Aetrix verify that R5F3640DDFA#UE is sourced from the original manufacturer or authorized distributors?
All R5F3640DDFA#UE 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 R5F3640DDFA#UE meets industry standards.
7.What is the process for return or replacement of R5F3640DDFA#UE?
All R5F3640DDFA#UE units undergo pre-shipment inspection (PSI). If there is an issue with R5F3640DDFA#UE, 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 R5F3640DDFA#UE part is unused and in its original packaging.
Return procedure for R5F3640DDFA#UE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F3640DDFA#UE Tags
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