Renesas R5F3650KDFA#U0

Overview

R5F3650KDFA#U0 from Renesas Electronics is a 16-bit M16C/60 Series CPU core microcontroller with 384 KB program ROM, 31 KB data flash, and 16 KB RAM, operating at up to 32 MHz (31.25 ns min instruction time) across 2.7–5.5 V supply. It integrates dual A/D converters (10-bit × 26 channels), dual D/A converters (8-bit × 2), CEC interface, three-phase motor control timers, and real-time clock - deployed in industrial HMI panels requiring deterministic timing and mixed-signal control.

For engineers reviewing the R5F3650KDFA#U0 datasheet, R5F3650KDFA#U0 pinout, R5F3650KDFA#U0 application, or R5F3650KDFA#U0 equivalent, key selection criteria include its 100-pin QFP package (PRQP0100JD-B), -40°C to +85°C industrial temperature grade, on-chip PLL and dead-time timer for motor drive, and CEC compliance for HDMI-adjacent consumer electronics subsystems.

Technical Context

The R5F3650KDFA#U0 implements the M16C/60 CPU core with hardware multiplier (16×16→32 bit) and MAC instruction, supporting single-chip, memory expansion, and microprocessor modes. Its external bus interface provides 1 MB address space (expandable to 4 MB) with 8-wait insertion, 4 chip selects, and selectable 8/16-bit data width.

Peripherals include five 16-bit Timer A units (PWM, encoder input, programmable output), six 16-bit Timer B units (pulse width/period measurement), on-chip dead-time timer for three-phase inverter control, and two remote control signal receivers (32 kHz operation, 4-wave pattern matching).

Key Specifications

Pinout & Package

Package: 100-pin QFP (PRQP0100JD-B), 14 × 20 mm body, 0.65 mm lead pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3650KDFB#U0 and R5F3651KDFC#U0, the R5F3650KDFA#U0 provides optimal balance of industrial temperature range (-40°C to +85°C), compact 100-pin QFP packaging, and full peripheral integration - making it ideal for space-constrained, thermally demanding embedded controllers where pin count and thermal profile are critical.

Availability

R5F3650KDFA#U0 is available at Aetrix Electronics and suitable for industrial HMI panels, home theater receivers, and office equipment controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for R5F3650KDFA#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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The M16C/65 Group is designed for cost-sensitive, real-time embedded applications requiring high integration, low power, and robust EMI performance - especially in consumer audio/video, industrial controls, and office automation.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F3650KDFA#U0?

The R5F3650KDFA#U0 operates at up to 32 MHz with a minimum instruction execution time of 31.25 ns. It supports a supply voltage range of 2.7 V to 5.5 V for both VCC1 and VCC2, with VCC1 ≥ VCC2. This wide voltage range allows direct interfacing with legacy 5 V logic or modern 3.3 V systems without level-shifting.

Does the R5F3650KDFA#U0 include hardware support for HDMI CEC functionality?

Yes, the R5F3650KDFA#U0 integrates native CEC (Consumer Electronics Control) circuitry compliant with HDMI CEC standards. Pin P8_5 serves as the bidirectional CEC signal line, supporting transmit/receive, arbitration loss detection, and automatic ACK output - enabling seamless remote control interoperability in AV receivers and set-top boxes.

What are the key differences between the R5F3650KDFA#U0 and R5F3650KDFB#U0?

The R5F3650KDFA#U0 and R5F3650KDFB#U0 share identical memory (384 KB ROM, 16 KB RAM, 31 KB data flash), peripherals, and electrical specifications. The sole difference is package: R5F3650KDFA#U0 uses 100-pin QFP (PRQP0100JD-B), while R5F3650KDFB#U0 uses 100-pin LQFP (PLQP0100KB-A). Footprint and thermal pad geometry differ, requiring separate PCB layouts.

How many analog-to-digital converter channels does the R5F3650KDFA#U0 support, and what is their resolution?

The R5F3650KDFA#U0 features a 10-bit successive-approximation A/D converter with 26 input channels. It includes sample-and-hold circuitry and achieves a conversion time of 1.72 µs. Channels are distributed across multiple ports (P0, P2, P10) and support simultaneous sampling in specific configurations per the datasheet timing diagrams.

Is on-chip debug supported for the R5F3650KDFA#U0, and what capabilities does it include?

Yes, the R5F3650KDFA#U0 includes full on-chip debug functionality. It supports real-time debugging via dedicated debug interface pins, on-board flash rewrite without external programmer, and four address match interrupts for precise breakpoint setting. This eliminates the need for external emulators and accelerates firmware development and field updates.