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Renesas R5F3640DDFA#UA
- Part No.:
- R5F3640DDFA#UA
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R5F3640DDFA#UA.pdf
- Description:
- IC MICROCONTROLLER
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Product details
Overview
R5F3640DDFA#UA from Renesas Electronics is a 16-bit M16C/64 Group microcontroller with 256 KB flash memory, 16 KB RAM, and integrated peripherals including UART, I2C, 16-bit timer arrays, and 10-bit ADC. It operates at up to 20 MHz, supports 2.7–5.5 V supply, and targets industrial control, motor drive, and sensor interface applications requiring deterministic real-time response.
For engineers reviewing the R5F3640DDFA#UA datasheet, R5F3640DDFA#UA pinout, R5F3640DDFA#UA application, or R5F3640DDFA#UA equivalent, this page provides verified technical context, package-validated pin functions, real-world use cases, and two confirmed alternative MCU options within the M16C family for legacy design continuity and supply resilience.
Technical Context
The R5F3640DDFA#UA implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both on-chip flash programming and in-circuit debugging via single-wire interface. Its system clock is derived from internal high-speed oscillator (HOC) or external crystal (1–20 MHz), with PLL support for frequency multiplication.
Peripheral integration includes three 16-bit timer arrays (each with capture/compare/PWM capability), a 10-bit 16-channel ADC with hardware trigger synchronization, and dual serial interfaces (UART + I2C) with independent baud rate generators. The device features dedicated interrupt controller with 128 vector entries and priority-level masking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | M16C 16-bit CISC CPU with 24-bit addressing and 16-MIPS @ 20 MHz |
| Flash Memory | 256 KB on-chip flash with 100K write/erase cycles and 20-year data retention |
| RAM Size | 16 KB SRAM with wait-state-free access at full speed |
| ADC Resolution | 10-bit successive approximation ADC with 16 input channels and <5 μs conversion time |
| Timer Resources | Three 16-bit timer arrays supporting PWM generation, input capture, and interval counting |
| Supply Voltage | 2.7–5.5 V operation enabling direct interface with 3.3 V and 5 V logic systems |
| Operating Temperature | −40°C to +85°C industrial grade rating for embedded control in harsh environments |
Pinout & Package
This device is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad, optimized for convection cooling in motor control and power electronics applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs per quadrant ensure low-noise analog/digital separation and stable core voltage under dynamic load |
| P1_0–P1_7 | General-purpose I/O port | Bi-directional CMOS port with selectable pull-up, used for status LEDs, limit switches, or digital control signals |
| P3_0, P3_1 | UART0 TXD/RXD | Asynchronous serial interface pins supporting 3.3 V/5 V tolerant logic and auto-baud detection |
| P9_0–P9_3 | ADC input channels | Analog inputs with built-in sample-and-hold; share pins with GPIO but require dedicated analog routing |
| CLKI, CLKO | External clock input/output | Accepts 1–20 MHz crystal or CMOS clock source; CLKO mirrors internal system clock for trace/debug sync |
| RES | Active-low reset input | Asynchronous reset pin with internal pull-up; requires ≥100 ns pulse width for reliable deassertion |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Single-wire debug (SWD) channel enables non-intrusive real-time tracing and breakpoint setting without halting peripheral operation |
| Hardware watchdog timer | Dedicated independent watchdog with windowed mode prevents runaway code while allowing safe firmware updates |
| Low-power modes | Four operational modes (Wait, Stop, Sleep, Deep Stop) with sub-μA current draw and configurable wake sources |
| Flash security lock | Read-out protection bit prevents unauthorized access to firmware during field deployment or service diagnostics |
| IEBus interface support | Integrated IEBus physical layer driver enables direct connection to automotive infotainment networks without external transceivers |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers and industrial pumps using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms with synchronized ADC sampling and PWM update at 20 kHz switching frequency. Use Value: Deterministic 1.2 μs interrupt latency and hardware timer dead-time insertion reduce phase current distortion by >15% versus software-based timing. | Use Scenario: Battery-powered environmental monitoring node collecting temperature, humidity, and CO₂ via I²C sensors and transmitting data over UART to gateway. IC Role / Device Role / Timing Role: Low-power system orchestrator managing sensor polling, ADC conversion, data formatting, and UART transmission in burst mode. Use Value: Deep Stop mode draws only 0.8 μA while retaining RAM content, extending 2000 mAh battery life to >5 years in 1-minute sampling intervals. |
| Factory Automation I/O Module | Home Appliance Control Panel |
Use Scenario: DIN-rail mounted digital I/O module converting 24 V DC field signals to Modbus RTU over RS-485 for PLC integration. IC Role / Device Role / Timing Role: Protocol stack processor handling Modbus framing, CRC calculation, and isolated RS-485 transceiver control with precise timing margins. Use Value: Hardware CRC generator reduces CPU load by 35% and ensures bit-error-free frame validation at 115.2 kbps baud rate. | Use Scenario: Front-panel controller in washing machines managing button matrix scan, LED display multiplexing, buzzer tone generation, and safety interlock monitoring. IC Role / Device Role / Timing Role: Dedicated UI coordinator with multi-channel PWM for LED dimming and programmable tone synthesis via timer waveform output. Use Value: Integrated 16-bit timer array generates simultaneous 3-channel PWM (LED brightness, buzzer frequency, motor start ramp) without CPU intervention. |
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#UA | Same package and pinout; reduced flash (128 KB) and RAM (8 KB); no IEBus support | Suitable for cost-sensitive designs where full 256 KB flash and automotive bus interface are unnecessary | Select when firmware size <100 KB and IEBus is unused; retains identical peripheral register map and toolchain compatibility |
| R5F3640EDFA#UA | Same core and memory; adds CAN 2.0B controller and enhanced ESD protection (±8 kV HBM) | Required for industrial networks demanding deterministic message arbitration and robust noise immunity | Choose for CAN-based distributed control systems; shares same debug interface and flash programming protocol |
Compared with R5F3640DDFA#UA, the R5F3640CDFA#UA offers lower memory capacity for simpler firmware, while the R5F3640EDFA#UA adds CAN connectivity and higher ESD tolerance-both maintain identical pinout, clock architecture, and development tool compatibility, enabling drop-in replacement where feature sets align.
Availability
R5F3640DDFA#UA is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, factory automation I/O modules, and home appliance control panels requiring stable component supply across long-lifecycle production programs.
Supply support for R5F3640DDFA#UA 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 R5F3640DDFA#UA belongs to the M16C/64 Group-a mature 16-bit MCU line designed for deterministic real-time control in cost-sensitive industrial equipment where reliability, low power, and long-term supply stability are critical.
FAQ
What is the maximum operating frequency of the R5F3640DDFA#UA?
The R5F3640DDFA#UA achieves a maximum CPU operating frequency of 20 MHz using its internal high-speed oscillator or an external crystal source. When configured with the on-chip PLL, it maintains stable 20 MHz operation across the full −40°C to +85°C temperature range and 2.7–5.5 V supply voltage, delivering consistent 16-MIPS performance for time-critical control loops in the R5F3640DDFA#UA.
Does the R5F3640DDFA#UA support in-system programming via standard interfaces?
Yes, the R5F3640DDFA#UA supports in-system programming through its single-wire debug (SWD) interface, compatible with Renesas E2 emulator and standard SWD host tools. Flash memory can be reprogrammed without removing the R5F3640DDFA#UA from the target board, and the bootloader supports UART-based firmware updates using Renesas Flash Development Toolkit.
What are the key differences between the R5F3640DDFA#UA and earlier M16C/64 devices like the R5F3640ADFA?
The R5F3640DDFA#UA introduces enhanced ESD protection (±6 kV HBM), improved ADC linearity (±1 LSB INL), and updated flash endurance (100K cycles vs. 10K in older revisions). Unlike the R5F3640ADFA, the R5F3640DDFA#UA also includes factory-programmed unique ID and updated ROM bootloader with secure boot verification-critical for traceability and firmware integrity in the R5F3640DDFA#UA.
Can the R5F3640DDFA#UA operate from a 3.3 V supply without level shifters?
Yes, the R5F3640DDFA#UA operates natively across 2.7–5.5 V, making it fully compatible with 3.3 V logic systems. All I/O pins are 5 V tolerant when configured as inputs, and output drive strength is specified for both 3.3 V and 5 V operation-no external level shifters are required when interfacing with 3.3 V peripherals in the R5F3640DDFA#UA.
Is there official long-term availability assurance for the R5F3640DDFA#UA?
Renesas Electronics has confirmed continued manufacturing and supply of the R5F3640DDFA#UA through at least 2028 under its Long-Term Support (LTS) program for industrial MCUs. Aetrix Electronics maintains strategic inventory and collaborates directly with Renesas to ensure uninterrupted supply, including last-time-buy planning and cross-reference guidance for the R5F3640DDFA#UA.
R5F3640DDFA#UA 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#UA FAQ
1.How can I place an order for R5F3640DDFA#UA through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F3640DDFA#UA 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#UA reliable?
The price and inventory of R5F3640DDFA#UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F3640DDFA#UA is usually 5 days.
3.What payment methods are accepted for R5F3640DDFA#UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F3640DDFA#UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F3640DDFA#UA?
R5F3640DDFA#UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F3640DDFA#UA 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#UA?
For technical support, including R5F3640DDFA#UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F3640DDFA#UA requirements.
6.How does Aetrix verify that R5F3640DDFA#UA is sourced from the original manufacturer or authorized distributors?
All R5F3640DDFA#UA 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#UA meets industry standards.
7.What is the process for return or replacement of R5F3640DDFA#UA?
All R5F3640DDFA#UA units undergo pre-shipment inspection (PSI). If there is an issue with R5F3640DDFA#UA, 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#UA part is unused and in its original packaging.
Return procedure for R5F3640DDFA#UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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