Renesas R5F3650KNFA#U0

Overview

R5F3650KNFA#U0 from Renesas 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 10-bit A/D converter (26 channels), 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 targets industrial motor control and HDMI-CEC-enabled consumer audio/video systems.

For engineers reviewing the R5F3650KNFA#U0 datasheet, R5F3650KNFA#U0 pinout, R5F3650KNFA#U0 application, or R5F3650KNFA#U0 equivalent, key selection criteria include its 100-pin QFP package (PRQP0100JD-B), -20°C to +85°C operating temperature, CEC transceiver capability at 32 kHz, and on-chip dead-time timer for inverter gate drive.

Technical Context

The R5F3650KNFA#U0 implements the M16C/60 CPU core with 16×16-bit multiplier and MAC instruction, enabling efficient real-time motor control math. Its clock system integrates main/sub oscillators, 125 kHz and 40 MHz ±10% on-chip oscillators, and PLL frequency synthesizer with selectable divide ratios (1–16).

Peripheral integration includes six UART/serial channels (UART0–UART2, UART5–UART7), multi-master I²C-bus interface, two remote control signal receivers with 4-waveform pattern matching, and CRC-CCITT/CRC-16 calculator - all supporting deterministic timing-critical embedded applications.

Key Specifications

Pinout & Package

Package: 100-pin QFP (PRQP0100JD-B, previous code 100P6F-A), 0.65 mm pitch, body size 14 × 14 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit MCU applications.

Compared with R5F3650KNFA#U0, the R5F3650KNFB#U0 offers identical electrical and functional behavior in an LQFP package, while R5F3651KNFC#U0 provides greater I/O and memory expansion headroom at the cost of larger footprint and higher pin count - making it appropriate for next-generation designs requiring scalability.

Availability

R5F3650KNFA#U0 is available at Aetrix Electronics and suitable for industrial motor control, HDMI-CEC consumer electronics, and smart appliance applications requiring stable component supply and long-term lifecycle support.

Supply support for R5F3650KNFA#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 cost-sensitive, real-time embedded applications demanding high integration, low power, and robust EMI immunity - particularly in audio/video, motor control, and home appliance systems.

FAQ

What is the operating temperature range for the R5F3650KNFA#U0?

The R5F3650KNFA#U0 is rated for operation from -20°C to +85°C ambient temperature, as confirmed in Table 1.5 of the R01DS0031EJ0210 datasheet under "Operating temperature" for part numbers ending in 'NFA'. This range applies to the PRQP0100JD-B package variant.

Does the R5F3650KNFA#U0 include hardware support for HDMI CEC?

Yes, the R5F3650KNFA#U0 integrates dedicated CEC circuitry compliant with HDMI CEC standards, including transmit/receive capability, arbitration lost detection, and automatic ACK output - all operating at the required 32 kHz clock frequency per the datasheet Section 1.2 and Table 1.4.

What package type does the R5F3650KNFA#U0 use?

The R5F3650KNFA#U0 uses the 100-pin QFP package with code PRQP0100JD-B (previously designated 100P6F-A), as specified in Table 1.5 and Figure 1.1 of the R01DS0031EJ0210 datasheet. It is distinct from the LQFP variant (PLQP0100KB-A) used by the R5F3650KNFB#U0.

How many A/D converter channels does the R5F3650KNFA#U0 support?

The R5F3650KNFA#U0 supports 26 channels of 10-bit A/D conversion with sample-and-hold functionality, as documented in Table 1.2 and Table 1.4 under "A/D Converter". Conversion time is 1.72 µs, enabling high-speed sensor acquisition.

Can the R5F3650KNFA#U0 generate three-phase motor control waveforms?

Yes, the R5F3650KNFA#U0 supports three-phase inverter control using Timer A1, A2, A4, and Timer B2, with an on-chip dead-time timer - explicitly listed in Table 1.2 and Table 1.4 under "Three-phase motor control timer functions" for both 128-pin and 100-pin package variants.