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Renesas R5F3651KDFC#U0
- Part No.:
- R5F3651KDFC#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
R5F3651KDFC#U0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
R5F3651KDFC#U0 from Renesas Electronics is a 16-bit M16C/60 Series CPU core microcontroller with 384 KB program ROM, 31 KB data flash, 16 KB RAM, and integrated peripherals including 26-channel 10-bit A/D converter, dual 8-bit D/A converters, CEC interface, and three-phase motor control timers. It operates at 32 MHz with 2.7–5.5 V supply and -40°C to +85°C temperature range in a 128-pin LQFP package, targeting industrial motor control and HDMI-CEC-enabled consumer electronics.
For engineers reviewing the R5F3651KDFC#U0 datasheet, R5F3651KDFC#U0 pinout, R5F3651KDFC#U0 application, or R5F3651KDFC#U0 equivalent, this page delivers verified specifications, validated peripheral functions, confirmed 128-pin PLQP0128KB-A package mapping, and real-world use cases in motor drive systems and HDMI-compliant AV equipment.
Technical Context
The R5F3651KDFC#U0 implements the M16C/60 CPU core with 16×16-bit multiplier and multiply-accumulate instruction, enabling deterministic real-time motor control loops. Its clock system integrates main/sub oscillators, 125 kHz on-chip oscillator, 40 MHz ±10% high-speed oscillator, and PLL frequency synthesizer with selectable divide ratios (1/2/4/8/16).
Peripheral integration includes five 16-bit Timer A units supporting PWM, event counting, and two-phase encoder input; six 16-bit Timer B units for pulse width/period measurement and three-phase inverter control with on-chip dead-time generation; and dual UARTs with I²C-bus, SIM, and multi-master I²C interfaces-all operating concurrently with DMA channels (4-cycle steal) and CRC-CCITT/CRC-16 calculation hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/60 Series with 16×16-bit multiplier and MAC instruction; enables fast motor vector calculations |
| Max Operating Frequency | 32 MHz at 2.7–5.5 V; minimum instruction time 31.25 ns for deterministic real-time response |
| Memory | 384 KB program ROM, 31 KB data flash (10,000 erase cycles), 16 KB RAM; supports in-system programming |
| A/D Converter | 10-bit resolution × 26 channels with sample-and-hold; 1.72 µs conversion time for fast sensor sampling |
| Timers | Timer A × 5 (PWM/event counter), Timer B × 6 (pulse measurement), plus on-chip dead-time timer for three-phase inverter safety |
| CEC Interface | Dedicated CEC transmit/receive with arbitration loss detection and ACK auto-output at 32 kHz; compliant with HDMI CEC standard |
| Package | 128-pin LQFP (PLQP0128KB-A); 14 mm × 14 mm footprint with 0.4 mm pitch for industrial PCB layout |
Pinout & Package
Package: 128-pin LQFP (PLQP0128KB-A), 14 mm × 14 mm, 0.4 mm pitch, exposed pad not specified. Dual power domains: VCC1 (core/I/O), VCC2 (external bus), AVCC/AVSS (analog section).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P7_0 / P7_1 | TA0OUT / TA0IN | Primary timer channel for motor phase timing and feedback capture; supports complementary PWM output and quadrature decoding |
| P9_3 / P9_4 | DA0 / DA1 | Dual 8-bit D/A outputs for analog reference generation or sensor biasing in closed-loop control |
| P8_5 | NMI / SD / CEC | Non-maskable interrupt input with dedicated CEC signal path; enables HDMI remote command handling without CPU overhead |
| P5_3 | BCLK | Bus clock input for external memory expansion; supports up to 4 MB address space with configurable wait states |
| VREF | Analog reference | External voltage reference input for A/D and D/A converters; improves ADC accuracy under varying supply conditions |
Key Features
| Feature | Design Value |
|---|---|
| Three-phase motor control circuit | Integrated dead-time timer and complementary PWM outputs on Timer A1/A2/A4/B2 eliminate external gate drivers for inverter stage |
| CEC function | Hardware-accelerated CEC protocol engine with automatic ACK and arbitration handling-reduces firmware load in HDMI-CEC devices |
| Real-time clock | Independent RTC module with seconds/minutes/hours/days-of-week counters; operates during stop mode for low-power timekeeping |
| Remote control signal receiver | Two independent IR receivers with 4-waveform pattern matching (header/data0/data1/special) and 6-byte buffer for NEC/RC-5 protocols |
| On-chip debug | Full JTAG-based on-chip debugger with 4 address match interrupts; enables non-intrusive code validation in live motor control loops |
Applications
| Industrial Motor Drive | HDMI-CEC Consumer Audio |
|---|---|
Use Scenario: Brushless DC motor control in HVAC blowers and industrial pumps requiring precise torque regulation and thermal protection. IC Role / Device Role / Timing Role: Primary motor controller executing FOC algorithms via Timer A/B PWM outputs and ADC sampling of current/voltage sensors. Use Value: On-chip dead-time timer and 26-channel ADC enable single-chip implementation of sensor-based closed-loop control without external timing ICs or muxing. | Use Scenario: HDMI audio receiver with remote control and system-wide power coordination across AV components. IC Role / Device Role / Timing Role: System manager handling CEC command parsing, IR remote decoding, and real-time clock synchronization across connected devices. Use Value: Dedicated CEC hardware and dual IR receivers allow concurrent HDMI remote command processing and local IR control without CPU polling overhead. |
| Office Equipment Control | Industrial PLC I/O Module |
Use Scenario: High-speed document feeder and paper path control in multifunction printers with jam detection and speed regulation. IC Role / Device Role / Timing Role: Real-time motion controller using Timer A event counters for encoder-based position tracking and PWM-driven stepper/servo drives. Use Value: 16-bit timers with two-phase encoder input and programmable output modes support precise paper transport timing and stall detection. | Use Scenario: Modular I/O expansion unit for programmable logic controllers requiring analog input conditioning and isolated digital I/O management. IC Role / Device Role / Timing Role: Analog front-end processor converting 26-channel sensor inputs (temperature, pressure, current) and generating calibrated 8-bit DAC outputs for actuator control. Use Value: Integrated 10-bit ADC with sample-and-hold and dual 8-bit DACs reduce BOM count by eliminating external signal conditioning ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F3651KNFC#U0 | Same 384 KB ROM/31 KB data flash/16 KB RAM, but rated for -20°C to +85°C; identical 128-pin LQFP package and peripheral set | Targeted at commercial-grade consumer equipment where extended low-temperature operation is not required | Select R5F3651KNFC#U0 for cost-sensitive designs operating above -20°C ambient |
| R5F3651MDFC#U0 | 512 KB program ROM, same 31 KB data flash/16 KB RAM, -40°C to +85°C rating, identical 128-pin LQFP and peripheral complement | Suitable for more complex firmware deployments requiring larger code space, such as multi-protocol communication stacks | Choose R5F3651MDFC#U0 when application firmware exceeds 384 KB or requires future feature expansion headroom |
Compared with R5F3651KDFC#U0, R5F3651KNFC#U0 offers identical functionality at a lower temperature grade, while R5F3651MDFC#U0 provides 128 KB additional program ROM-both retain full pin and peripheral compatibility, enabling direct substitution in existing PCB layouts when thermal or code-size requirements change.
Availability
R5F3651KDFC#U0 is available at Aetrix Electronics and suitable for industrial motor control, HDMI-CEC consumer electronics, office equipment automation, and PLC I/O modules requiring stable component supply across extended temperature ranges.
Supply support for R5F3651KDFC#U0 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 management solutions for automotive, industrial, and IoT markets.
The M16C/65 Group is designed for real-time embedded control in resource-constrained environments, emphasizing integrated motor control peripherals, robust EMI immunity, and low-power operation for industrial and consumer appliances.
FAQ
What is the operating temperature range for R5F3651KDFC#U0?
The R5F3651KDFC#U0 is rated for industrial operation from -40°C to +85°C. This extended temperature range ensures reliable performance in demanding environments such as motor drive enclosures and industrial PLC cabinets where ambient temperatures exceed commercial-grade limits. The specification is confirmed in Table 1.5 of the R01DS0031EJ0210 datasheet under "Operating temperature -40°C to 85°C" for part number R5F3651KDFC.
Does R5F3651KDFC#U0 include hardware support for HDMI CEC?
Yes, R5F3651KDFC#U0 integrates dedicated CEC transmit/receive circuitry with arbitration loss detection and automatic ACK output, operating at 32 kHz. This hardware acceleration offloads CEC protocol handling from the CPU, enabling responsive HDMI remote control in AV receivers and soundbars without firmware polling. The feature is explicitly documented in Tables 1.2 and 1.4 under "CEC Functions (2)".
What package type does R5F3651KDFC#U0 use?
R5F3651KDFC#U0 uses the 128-pin LQFP package designated PLQP0128KB-A (previous code: 128P6Q-A), measuring 14 mm × 14 mm with 0.4 mm pitch. This package is confirmed in Table 1.5 of the datasheet and Figure 1.5 showing the pin assignment for the 128-pin variant. It supports both VCC1 (core) and VCC2 (bus) dual-supply operation.
How many A/D converter channels does R5F3651KDFC#U0 provide?
R5F3651KDFC#U0 features a 10-bit A/D converter with 26 input channels, including sample-and-hold capability and 1.72 µs conversion time. These channels serve analog sensor inputs across motor current sensing, temperature monitoring, and user interface potentiometers. The specification is listed in Tables 1.2 and 1.4 under "A/D Converter" and verified in the block diagram (Figure 1.3).
Is R5F3651KDFC#U0 pin-compatible with other M16C/65 Group MCUs in the same package?
Yes, all M16C/65 Group devices in the 128-pin LQFP (PLQP0128KB-A) package-including R5F3651KDFC#U0, R5F3651KNFC#U0, and R5F3651MDFC#U0-share identical pin assignments and electrical characteristics. This allows drop-in replacement within the same package family when upgrading ROM size or temperature grade, as confirmed by consistent pin naming across Tables 1.7–1.9 and Figure 1.5.
R5F3651KDFC#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 128-LQFP
- Series:
- M16C™ M16C/60/65
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- 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:
- -
- 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#U0 FAQ
1.How can I place an order for R5F3651KDFC#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F3651KDFC#U0 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#U0 reliable?
The price and inventory of R5F3651KDFC#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F3651KDFC#U0 is usually 5 days.
3.What payment methods are accepted for R5F3651KDFC#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F3651KDFC#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F3651KDFC#U0?
R5F3651KDFC#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F3651KDFC#U0 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#U0?
For technical support, including R5F3651KDFC#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F3651KDFC#U0 requirements.
6.How does Aetrix verify that R5F3651KDFC#U0 is sourced from the original manufacturer or authorized distributors?
All R5F3651KDFC#U0 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#U0 meets industry standards.
7.What is the process for return or replacement of R5F3651KDFC#U0?
All R5F3651KDFC#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F3651KDFC#U0, 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#U0 part is unused and in its original packaging.
Return procedure for R5F3651KDFC#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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