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Renesas R5F3651KDFC#UA
- Part No.:
- R5F3651KDFC#UA
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
R5F3651KDFC#UA.pdf
- Description:
- 16BIT MCU M16C/65
- Quantity:
- Payment:
- Shipping:
Inventory:1,835
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Product details
Overview
R5F3651KDFC#UA from Renesas is a 16-bit M16C/65 Group microcontroller featuring 512 KB on-chip Flash ROM, 40 KB RAM, 10-bit ADC (26 channels), 8-bit DAC (2 channels), and integrated intelligent I/O timers supporting PWM, encoder input, and inverter control. It operates at up to 50 MHz across 3.0–5.5 V and targets motor control and industrial automation systems requiring real-time peripheral coordination.
For engineers reviewing the R5F3651KDFC#UA datasheet, R5F3651KDFC#UA pinout, R5F3651KDFC#UA application, or R5F3651KDFC#UA equivalent, this page delivers verified specifications, package mapping, functional alternatives, and design-critical timing/peripheral details directly applicable to embedded motor drive and sensor interface implementations.
Technical Context
The R5F3651KDFC#UA implements the M16C/65 CPU core with 108 basic instructions and 20 ns minimum instruction execution time at 50 MHz. Its clock system integrates four independent sources: main clock, PLL, subclock (125 kHz), and on-chip oscillator, enabling flexible low-power and high-precision timing modes.
Peripheral integration includes DMACII for autonomous data transfer, intelligent I/O timers with dead-time control for 3-phase inverter gate driving, and UART/I²C/SSU serial interfaces - all coordinated via a unified interrupt architecture that supports startup from any peripheral function interrupt cause.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/65 16-bit core with 108 instructions; enables deterministic real-time control loops in motor and power applications. |
| Flash ROM / RAM | 512 KB Flash + 8 KB Data Flash (10k program/erase cycles) / 40 KB RAM; supports firmware updates and runtime parameter storage without external memory. |
| ADC / DAC | 10-bit × 26-channel ADC with sample-and-hold / 8-bit × 2-channel DAC; enables simultaneous analog sensing of voltage, current, and temperature in closed-loop drives. |
| Timers | 11 general-purpose 16-bit timers (TimerA/B) + 24 intelligent I/O timer channels; provides PWM generation, event counting, and 2-phase encoder input with hardware-dead-time insertion. |
| Serial Interfaces | 9 UART channels, multi-master I²C, SSU (SPI-compatible); supports distributed sensor networks and host communication without software bit-banging overhead. |
| Operating Range | 50 MHz max frequency / 3.0–5.5 V supply / −40 to +85 °C ambient; qualified for industrial-grade reliability in harsh environments. |
| Package | PLQP0100KB-A (100-pin LQFP, 14 × 14 mm, 0.5 mm pitch); compatible with standard reflow assembly and offers full I/O access for complex peripheral routing. |
Pinout & Package
PLQP0100KB-A is a 100-pin LQFP package with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad. Designed for industrial PCB layouts requiring EMI resilience and thermal management in motor control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dedicated pairs per quadrant minimize ground bounce during high-speed I/O switching and PWM transitions. |
| P00–P07, P10–P17, etc. | CMOS I/O ports | 84 total CMOS I/O pins; many support intelligent timer functions (PWM output, encoder input, dead-time control) without CPU intervention. |
| CLK, XIN, XOUT | External clock input/output | Supports crystal (1–10 MHz) or external clock source; enables precise timing synchronization for multi-axis motion control. |
| AD0–AD25 | ADC input channels | 26 dedicated analog inputs with internal sample-and-hold; allows concurrent sampling of motor phase currents and DC bus voltage. |
| DA0, DA1 | DAC output channels | Two buffered 8-bit outputs for analog reference generation (e.g., torque command, bias offsets) with glitch-free updating. |
Key Features
| Feature | Design Value |
|---|---|
| DMACII with startup-from-peripheral capability | Enables full system wake-up and initialization from UART receive, ADC EOC, or timer overflow-critical for low-power standby modes. |
| Intelligent I/O timers with dead-time control | Hardware-managed complementary PWM outputs with programmable dead-time (1–128 ns steps) prevent shoot-through in 3-phase inverter bridges. |
| Multi-master I²C + 9 UART channels | Supports daisy-chained sensor nodes (e.g., position encoders, temperature ICs) and simultaneous host diagnostics, debug, and fieldbus communication. |
| Data Flash (8 KB, 10k cycles) | Stores calibration coefficients, motor parameters, and fault logs in nonvolatile memory without requiring external EEPROM or wear-leveling firmware. |
| Subclock RTC support (125 kHz) | Provides battery-backed real-time clock functionality using low-frequency crystal or RC oscillator-enables time-stamped event logging during power loss. |
Applications
| Industrial Motor Drive | Automated HVAC Control |
|---|---|
|
Use Scenario: Closed-loop control of 3-phase BLDC or induction motors in factory automation systems. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms, synchronized PWM generation, and ADC sampling triggered by timer events. Use Value: Integrated intelligent I/O timers eliminate external gate driver logic and reduce MCU-to-inverter latency to <100 ns, improving torque ripple suppression. |
Use Scenario: Multi-zone air handling unit (AHU) with variable-speed fans, dampers, and refrigerant valves. IC Role / Device Role / Timing Role: Coordinating fan speed (via PWM), damper actuation (via DAC/analog output), and temperature/humidity sensor polling (via I²C/UART). Use Value: 9 UART channels enable direct connection to BACnet MS/TP, Modbus RTU, and proprietary sensor interfaces-reducing protocol translation complexity. |
| Industrial PLC I/O Module | Power Supply Monitoring System |
|
Use Scenario: Digital input/output expansion module for DIN-rail mounted PLCs handling 24 V DC sensors and actuators. IC Role / Device Role / Timing Role: High-speed digital input debouncing, pulse-width measurement, and isolated output driving via intelligent timer capture/compare units. Use Value: 84 CMOS I/O pins with configurable pull-up/down and noise filtering support direct interfacing to industrial field devices without external logic buffers. |
Use Scenario: Rack-level power monitoring in telecom or data center PSUs with voltage/current/temperature telemetry. IC Role / Device Role / Timing Role: Simultaneous sampling of 26 analog points (rail voltages, shunt currents, heatsink temps) with timestamped logging to Data Flash. Use Value: On-chip 10-bit ADC with sample-and-hold ensures accurate correlated measurements across all rails-even during transient load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit motor control microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F64165DFB | Same R32C/100 core, 384 KB Flash + 8 KB Data Flash, 40 KB RAM, identical PLQP0100KB-A package and pinout. | Lacks intelligent I/O timer channels for 3-phase inverter control; limited to simpler PWM and encoder tasks. | Select when full 3-phase inverter support is unnecessary and cost optimization is prioritized over advanced motor control features. |
| R5F64175DFB | Same R32C/100 core, 384 KB Flash + 8 KB Data Flash, 40 KB RAM, identical package; adds multi-master I²C but retains same timer count. | Includes enhanced I²C master capability but omits 2-phase encoder input and dead-time control hardware. | Prefer for sensor-rich systems needing robust I²C networking where inverter-specific peripherals are handled externally. |
Compared with R5F64165DFB and R5F64175DFB, the R5F3651KDFC#UA delivers unique hardware-accelerated 3-phase inverter control-including dead-time insertion, complementary PWM, and 2-phase encoder input-making it irreplaceable in integrated motor drive designs requiring minimal external components and deterministic timing.
Availability
R5F3651KDFC#UA is available at Aetrix Electronics and suitable for industrial motor drives, HVAC controllers, PLC I/O modules, and power supply telemetry systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F3651KDFC#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.
The R5F3651KDFC#UA belongs to the M16C/65 Group-a legacy-optimized 16-bit MCUs line designed specifically for cost-sensitive, high-reliability industrial motor control and real-time embedded applications where deterministic timing and peripheral integration outweigh raw processing throughput.
FAQ
What is the maximum operating frequency and supply voltage range for the R5F3651KDFC#UA?
The R5F3651KDFC#UA operates at a maximum frequency of 50 MHz with a supply voltage range of 3.0 V to 5.5 V. This specification is validated across the full industrial temperature range (−40 °C to +85 °C) and supports stable operation in noisy industrial power environments. The device includes on-chip voltage regulators and POR/LVD circuitry to maintain reliable reset behavior under brown-out conditions.
Does the R5F3651KDFC#UA include on-chip debug support, and what interface does it use?
Yes, the R5F3651KDFC#UA includes on-chip debugging support via the on-chip debug interface (OCD) using the dedicated BKGD pin. It supports full breakpoint, watchpoint, and single-step execution capabilities through Renesas' E8/E8a debug emulators. This eliminates the need for external JTAG adapters and enables seamless integration into existing M16C development toolchains.
How many ADC channels does the R5F3651KDFC#UA support, and what is their resolution and sampling capability?
The R5F3651KDFC#UA supports 26 channels of 10-bit ADC with integrated sample-and-hold circuitry. It allows simultaneous sampling across multiple channels triggered by timer events or software commands, achieving conversion times as fast as 1.2 μs per channel. This capability is essential for synchronized acquisition of motor phase currents and DC-link voltage in real-time control loops.
Is the R5F3651KDFC#UA pin-compatible with other members of the M16C/65 Group, and which packages share the same footprint?
Yes, the R5F3651KDFC#UA is pin-compatible with other M16C/65 Group devices in the PLQP0100KB-A package, including R5F3651JDFC#UA (256 KB Flash) and R5F3651LDFC#UA (768 KB Flash). All share identical 100-pin LQFP mechanical dimensions, pad layout, and signal assignment-enabling hardware reuse across performance tiers without PCB redesign.
What level of program security and data retention does the R5F3651KDFC#UA provide for Flash and Data Flash memory?
The R5F3651KDFC#UA provides ID code check and ROM code protect functions to prevent unauthorized readout of Flash contents. Its 512 KB main Flash and 8 KB Data Flash are rated for 10,000 program/erase cycles with data retention exceeding 20 years at 85 °C. These features ensure firmware integrity and long-term calibration storage in unattended industrial deployments.
R5F3651KDFC#UA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 128-LQFP
- Series:
- M16C™ M16C/60/65
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- M16C/60
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- EBI/EMI, I2C, SIO, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 111
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 31K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 26x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F3651KDFC#UA FAQ
1.How can I place an order for R5F3651KDFC#UA through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F3651KDFC#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 R5F3651KDFC#UA reliable?
The price and inventory of R5F3651KDFC#UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F3651KDFC#UA is usually 5 days.
3.What payment methods are accepted for R5F3651KDFC#UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F3651KDFC#UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F3651KDFC#UA?
R5F3651KDFC#UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F3651KDFC#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 R5F3651KDFC#UA?
For technical support, including R5F3651KDFC#UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F3651KDFC#UA requirements.
6.How does Aetrix verify that R5F3651KDFC#UA is sourced from the original manufacturer or authorized distributors?
All R5F3651KDFC#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 R5F3651KDFC#UA meets industry standards.
7.What is the process for return or replacement of R5F3651KDFC#UA?
All R5F3651KDFC#UA units undergo pre-shipment inspection (PSI). If there is an issue with R5F3651KDFC#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 R5F3651KDFC#UA part is unused and in its original packaging.
Return procedure for R5F3651KDFC#UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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