Renesas R5F3651KCDFC#V0

Overview

R5F3651KCDFC#V0 from Renesas is a 16-bit M16C/60 Series CPU core microcontroller with 384 KB program ROM, 16 KB RAM, and 31 KB data flash, operating at up to 32 MHz (2.7–5.5 V), featuring integrated A/D (10-bit × 26 ch), D/A (8-bit × 2), CEC interface, and three-phase motor control timers. It targets industrial and consumer embedded systems requiring real-time control, analog sensing, and HDMI-CEC compliance.

For engineers reviewing the R5F3651KCDFC#V0 datasheet, R5F3651KCDFC#V0 pinout, R5F3651KCDFC#V0 application, or R5F3651KCDFC#V0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade, 128-pin LQFP package (PLQP0128KB-A), on-chip debug support, and dual-voltage bus interface (VCC1/VCC2) for mixed-signal system integration.

Technical Context

The R5F3651KCDFC#V0 implements a fixed-function M16C/60 CPU core with 91 basic instructions and hardware multiplier (16×16→32 bit), supporting single-chip, memory expansion, and microprocessor modes. Its clock system integrates main/sub oscillators, 125 kHz and 40 MHz ±5% on-chip oscillators, and PLL frequency synthesis with selectable divide ratios (1/2/4/8/16).

Peripheral architecture includes 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 inverter control, two remote control signal receivers (32 kHz operation), and multi-master I²C-bus interface - all mapped to dedicated pins in the 128-pin LQFP package.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PLQP0128KB-A), 20 mm × 20 mm body, 0.5 mm lead pitch, exposed pad not specified. Dual power supply: VCC1 powers core/peripherals (2.7–5.5 V), VCC2 powers external bus interface (2.7 V to VCC1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3651ECDFC and R5F3651MCDFC, the R5F3651KCDFC#V0 provides balanced memory (384 KB ROM / 31 KB data flash) ideal for mid-tier industrial and consumer devices needing CEC, motor control, and analog I/O without over-provisioning.

Availability

R5F3651KCDFC#V0 is available at Aetrix Electronics and suitable for industrial motor drives, HDMI-CEC-enabled consumer electronics, and smart appliance mainboards requiring stable component supply across extended temperature ranges.

Supply support for R5F3651KCDFC#V0 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 ICs for automotive, industrial, and IoT markets.

The M16C/65C Group is designed for cost-effective, high-integration embedded control in audio, home appliances, and industrial equipment - emphasizing real-time responsiveness, analog interface capability, and HDMI-CEC compliance.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F3651KCDFC#V0?

The R5F3651KCDFC#V0 operates at up to 32 MHz with a supply voltage range of 2.7 V to 5.5 V on VCC1 and VCC2. At 32 MHz, the minimum instruction execution time is 31.25 ns under these voltage conditions. The device supports wait/stop power-saving modes to reduce current consumption during idle periods, making it suitable for battery-backed or energy-conscious industrial applications where the R5F3651KCDFC#V0 maintains deterministic timing.

Does the R5F3651KCDFC#V0 support HDMI Consumer Electronics Control (CEC) functionality?

Yes, the R5F3651KCDFC#V0 integrates dedicated CEC transmit/receive circuitry compliant with HDMI CEC standards, including arbitration lost detection and automatic ACK output. It operates at 32 kHz and shares the P8_5 pin with NMI and serial data functions. This on-die implementation eliminates external transceivers and level shifters required by discrete solutions, simplifying design and improving signal integrity for R5F3651KCDFC#V0-based HDMI source/sink products.

What are the A/D and D/A converter specifications of the R5F3651KCDFC#V0?

The R5F3651KCDFC#V0 features a 10-bit A/D converter with 26 input channels and sample-and-hold circuitry, achieving 1.72 µs conversion time. It also includes two 8-bit D/A converters (DA0/DA1) accessible via P9_3 and P9_4 pins. These converters support simultaneous use with PWM and timer B inputs, enabling closed-loop analog control loops - critical for applications like motor current regulation or audio biasing where precise R5F3651KCDFC#V0 analog I/O integration reduces BOM count.

Which package type and pin count does the R5F3651KCDFC#V0 use?

The R5F3651KCDFC#V0 is supplied in a 128-pin LQFP package designated PLQP0128KB-A (previous code: 128P6Q-A), measuring 20 mm × 20 mm with 0.5 mm lead pitch. This package supports full peripheral access including external bus interface (A0–A19, D0–D15), 111 CMOS I/O ports, and dedicated analog/power pins (AVCC/AVSS/VCC1/VCC2/VSS). The physical layout matches Renesas' standardized 128-pin M16C/65C footprint, ensuring R5F3651KCDFC#V0 drop-in compatibility within existing board designs.

How does the R5F3651KCDFC#V0 support three-phase motor control?

The R5F3651KCDFC#V0 supports three-phase inverter control using coordinated outputs from Timer A1, A2, A4, and Timer B2, plus an on-chip dead-time timer to prevent shoot-through in high-side/low-side gate drivers. These timers provide complementary PWM signals with programmable dead time, phase-shifted outputs, and fault protection inputs. This integrated approach reduces external logic and timing-critical PCB traces, enabling robust R5F3651KCDFC#V0-based motor controllers for HVAC, pumps, and industrial actuators.