Renesas R5F3650ENFB#V2

Overview

R5F3650ENFB#V2 from Renesas is a 16-bit M16C/60 Series CPU core microcontroller with 256 KB program ROM, 20 KB RAM, and 4 KB × 2 blocks data flash, 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, 1.72 µs conversion), dual D/A (8-bit × 2), CEC interface, and three-phase motor control timers - deployed in industrial HMI panels requiring deterministic real-time I/O and HDMI-CEC remote control support.

For engineers reviewing the R5F3650ENFB#V2 datasheet, R5F3650ENFB#V2 pinout, R5F3650ENFB#V2 application, or R5F3650ENFB#V2 equivalent, key selection criteria include its 100-pin LQFP (PLQP0100KB-A) package, -20°C to +85°C industrial temperature grade, on-chip PLL and RTC, and compatibility with legacy M16C toolchains for cost-sensitive embedded control upgrades.

Technical Context

The R5F3650ENFB#V2 implements the M16C/60 Series CPU core with hardware multiplier (16×16→32 bit, MAC), 91 basic instructions, and three operating modes: single-chip, memory expansion, and microprocessor. Its external bus supports 1 MB address space expandable to 4 MB with 8-wait insertion, 4 chip selects, and selectable 8/16-bit data width.

Peripherals include six UART/serial channels (UART0–2, UART5–7), two clock-synchronous serial I/Os, multi-master I²C, CEC transceiver (32 kHz operation), 15-bit watchdog timer, 4-channel DMAC (cycle-steal mode), and dedicated three-phase inverter control logic using Timer A1/A2/A4 and Timer B2 with on-chip dead-time generation.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A), 14 mm × 14 mm × 1.4 mm body, 0.5 mm pitch, exposed pad not specified. Dual power domains: VCC1 powers core/peripherals; VCC2 powers external bus pins for mixed-voltage interfacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3650ENFA#V2, R5F3650ENFB#V2 offers superior thermal dissipation via LQFP's exposed pad option and tighter trace routing; versus R5F3651ENFC#V2, it provides identical feature set in smaller footprint and lower cost where 128-pin resources are unnecessary.

Availability

R5F3650ENFB#V2 is available at Aetrix Electronics and suitable for industrial HMI panels, HDMI-CEC audio/video systems, and legacy equipment upgrades requiring stable component supply, long-term lifecycle assurance, and Renesas M16C ecosystem compatibility.

Supply support for R5F3650ENFB#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, power, and SoC solutions for automotive, industrial, and enterprise markets.

The M16C/65 Group targets cost-sensitive, high-reliability embedded control applications - particularly industrial automation, consumer audio/video, and appliance control - where deterministic real-time performance and peripheral integration outweigh raw processing throughput.

FAQ

What is the maximum operating frequency and voltage range for the R5F3650ENFB#V2?

The R5F3650ENFB#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. At 32 MHz, the minimum instruction execution time is 31.25 ns. The device supports multiple clock sources including main crystal, sub-clock, on-chip oscillators (125 kHz and 40 MHz ±10%), and a PLL frequency synthesizer.

Does the R5F3650ENFB#V2 support HDMI CEC functionality, and how is it implemented?

Yes, the R5F3650ENFB#V2 includes dedicated CEC circuitry compliant with HDMI CEC standards. It supports transmit/receive, arbitration lost detection, and automatic ACK output at 32 kHz operation. The CEC interface shares Pin P8_5 (NMI/SD/CEC), requiring software configuration to enable CEC mode and manage signal timing per HDMI specification.

What are the A/D and D/A converter specifications of the R5F3650ENFB#V2?

The R5F3650ENFB#V2 features a 10-bit A/D converter with 26 input channels and sample-and-hold capability, achieving 1.72 µs conversion time. It also includes two independent 8-bit D/A converters (DA0 and DA1), accessible via P9_3 and P9_4, usable for analog waveform generation or sensor calibration reference outputs.

Which package type and pin count does the R5F3650ENFB#V2 use?

The R5F3650ENFB#V2 uses a 100-pin LQFP package designated PLQP0100KB-A (previous code: 100P6Q-A), measuring 14 mm × 14 mm with 0.5 mm pitch. This package supports industrial temperature range (−20°C to +85°C) and includes dual power domains (VCC1/VCC2) for mixed-voltage bus interfacing.

How does the R5F3650ENFB#V2 support three-phase motor control?

The R5F3650ENFB#V2 supports three-phase motor control through dedicated timer hardware: Timer A1, A2, A4 and Timer B2 coordinate PWM outputs with on-chip dead-time insertion. This eliminates external dead-time generators and ensures safe switching of inverter bridge devices, directly enabling brushless DC or induction motor drives without additional timing ICs.