Renesas R5F3650KDFB#V2

Overview

R5F3650KDFB#V2 from Renesas is a 16-bit M16C/60 Series core microcontroller with 384 KB program ROM, 31 KB data flash, 16 KB RAM, and 85 CMOS I/O ports in a 100-pin LQFP (PLQP0100KB-A) package. It operates at 32 MHz with 2.7–5.5 V supply, integrates dual A/D converters (10-bit × 26 channels), CEC interface, three-phase motor control timers, and on-chip debug - deployed in industrial HMI and consumer audio subsystems.

For engineers reviewing the R5F3650KDFB#V2 datasheet, R5F3650KDFB#V2 pinout, R5F3650KDFB#V2 application, or R5F3650KDFB#V2 equivalent, key selection criteria include its -40°C to +85°C operating range, integrated CEC transceiver for HDMI-CEC compliance, 16-bit PWM outputs for motor drive, and 100-pin LQFP footprint with dual power domains (VCC1/VCC2).

Technical Context

The R5F3650KDFB#V2 implements the M16C/60 CPU core with 16×16-bit multiplier and MAC instruction support, enabling deterministic real-time control. Its clock system includes main/sub oscillators, 125 kHz and 40 MHz ±10% on-chip oscillators, and PLL frequency synthesis - all feeding a configurable divider network for peripheral clock domain partitioning.

Peripheral integration includes six UART/serial interfaces (UART0–2, UART5–7), multi-master I²C, two CEC channels, 16-bit Timer A (×5) and Timer B (×6) with encoder input and dead-time generation, and a CRC calculator compliant with CRC-CCITT and CRC-16 standards - all mapped to dedicated pins in the 100-pin LQFP package.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A), 14 mm × 14 mm, 0.5 mm pitch, dual power domains (VCC1 for core/peripherals, VCC2 for external bus interface).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3650KDFB#V2, R5F3650KDFC#V2 offers higher I/O count and external bus flexibility at the cost of larger PCB area, while R5F3650EDFB#V2 reduces memory capacity and cost without sacrificing package compatibility or temperature grade - enabling tiered product variants from a single design platform.

Availability

R5F3650KDFB#V2 is available at Aetrix Electronics and suitable for industrial HMI, HDMI-CEC subsystems, and appliance motor control applications requiring stable component supply across long production lifecycles.

Supply support for R5F3650KDFB#V2 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 consumer markets.

The M16C/65 Group targets cost-sensitive, high-reliability embedded systems requiring rich peripheral integration and extended temperature operation - designed specifically for audio, home appliance, and industrial control applications.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F3650KDFB#V2?

The R5F3650KDFB#V2 operates at up to 32 MHz with a supply voltage range of 2.7 V to 5.5 V on both VCC1 and VCC2 pins. This wide voltage range supports direct battery-powered operation (e.g., 3.3 V or 5 V rails) and simplifies power design across diverse applications. The R5F3650KDFB#V2 maintains full functionality across this range without requiring external voltage regulators for core logic.

Does the R5F3650KDFB#V2 support HDMI-CEC functionality natively?

Yes, the R5F3650KDFB#V2 includes two fully compliant CEC transceivers operating at 32 kHz, with built-in arbitration loss detection and automatic ACK output. Pin P8_5 serves as the primary CEC I/O, enabling direct connection to an HDMI connector's CEC line. No external level-shifter or protocol translator is required - the R5F3650KDFB#V2 handles physical layer signaling and basic CEC message framing per HDMI specification.

How many analog input channels does the R5F3650KDFB#V2 support, and what is their resolution?

The R5F3650KDFB#V2 integrates a 10-bit successive-approximation A/D converter with 26 input channels, including sample-and-hold capability. These channels are distributed across multiple port groups (P0, P2, P10, P9) and support simultaneous sampling in certain configurations. The 1.72 µs conversion time enables high-speed sensor acquisition - critical for motor current sensing and thermal monitoring in the R5F3650KDFB#V2's target applications.

What debug and programming interfaces are available on the R5F3650KDFB#V2?

The R5F3650KDFB#V2 features on-chip debug support via the standard Renesas E8/E8a debug interface, enabling full JTAG-style debugging, real-time trace, and flash memory rewriting in-system. It includes four address match interrupts for precise breakpoint placement and supports flash programming through the on-chip bootloader - eliminating the need for external programmers during development or field firmware updates. This capability is fully implemented in the R5F3650KDFB#V2 without requiring additional hardware.

Is the R5F3650KDFB#V2 pin-compatible with other members of the M16C/65 Group in the same package?

Yes, the R5F3650KDFB#V2 shares identical pinout and electrical characteristics with all other M16C/65 Group devices in the 100-pin LQFP (PLQP0100KB-A) package, including R5F3650EDFB#V2 and R5F3650NDFB#V2. Function mapping is consistent across variants - only memory sizes and temperature grades differ. This allows hardware reuse across product families, with firmware differentiation handled solely through memory configuration and initialization routines in the R5F3650KDFB#V2 software stack.