Renesas R5F3650NCDFB#30

Overview

R5F3650NCDFB#30 from Renesas is a 16-bit flash microcontroller in the M16C/65C Group, featuring an M16C/60 Series CPU core with 16×16-bit multiplier, 512 KB program ROM, 47 KB RAM, and 4 KB ×2 data flash. It operates at up to 32 MHz (2.7–5.5 V), integrates 26-channel 10-bit A/D converter (1.72 µs conversion), dual 8-bit D/A converters, and CEC functionality for HDMI-CEC control - deployed in industrial motor drives and consumer audio/video systems.

For engineers reviewing the R5F3650NCDFB#30 datasheet, R5F3650NCDFB#30 pinout, R5F3650NCDFB#30 application, or R5F3650NCDFB#30 equivalent, key selection criteria include its 100-pin LQFP (PLQP0100KB-A) package, -40°C to +85°C industrial temperature grade, three-phase motor control timers with on-chip dead time, and dual UART/I²C/CEC interfaces supporting embedded real-time control.

Technical Context

The R5F3650NCDFB#30 implements a 16-bit M16C/60 CPU core with 91 basic instructions and 31.25 ns minimum instruction cycle at 32 MHz. Its peripheral set includes five 16-bit Timer A units (with PWM, encoder input, programmable output) and six 16-bit Timer B units (pulse width/period measurement, three-phase inverter control), plus an on-chip dead time timer for gate drive safety.

It features a multi-voltage bus architecture: VCC1 powers core/peripherals (2.7–5.5 V), while VCC2 independently supplies external bus pins (2.7 V to VCC1), enabling mixed-voltage interfacing. Clock sources include main/sub crystal oscillators, 125 kHz low-speed and 40 MHz ±5% high-speed on-chip oscillators, and a PLL frequency synthesizer with selectable dividers (1/2/4/8/16).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-A), 14 mm × 14 mm, 0.5 mm pitch, exposed pad not specified. Dual power domains: VCC1 (core/peripherals), VCC2 (external bus), with independent analog supply (AVCC/AVSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3650MCDFB, the R5F3650NCDFB#30 provides 16 KB more RAM for real-time data buffering and algorithm state storage; compared with R5F3651NCDFC, it offers identical core performance and memory in a smaller 100-pin footprint, reducing PCB cost and layout complexity where external bus expansion is unnecessary.

Availability

R5F3650NCDFB#30 is available at Aetrix Electronics and suitable for industrial motor drives, HDMI-CEC enabled AV equipment, and smart appliance control requiring stable component supply over extended production lifecycles.

Supply support for R5F3650NCDFB#30 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 industrial, automotive, and IoT applications.

The M16C/65C Group targets cost-sensitive, real-time embedded systems requiring high peripheral integration, deterministic timing, and industrial-grade reliability - especially in audio/video, motor control, and home appliance markets.

FAQ

What is the operating temperature range for the R5F3650NCDFB#30?

The R5F3650NCDFB#30 is rated for -40°C to +85°C operation, meeting industrial temperature requirements. This grade is confirmed by the 'D' suffix in the part number and documented in Table 1.6 (D-Version) of the R01DS0015EJ0110 datasheet, making it suitable for deployment in harsh environments such as factory automation controllers and outdoor AV enclosures.

Does the R5F3650NCDFB#30 support in-system programming of its flash memory?

Yes, the R5F3650NCDFB#30 supports on-board flash rewrite via its on-chip debug interface. The device includes dedicated circuitry for in-system programming without external hardware programmers, enabling field firmware updates and secure bootloader implementation - a capability explicitly listed under "Debug Functions" in Section 1.2 of the R01DS0015EJ0110 datasheet.

How many UART channels does the R5F3650NCDFB#30 provide?

The R5F3650NCDFB#30 provides six UART channels (UART0 to UART2, UART5 to UART7), as specified in Table 1.2 and Table 1.4 of the R01DS0015EJ0110 datasheet. These support both clock-synchronous and asynchronous operation, with UART0–UART2 and UART5–UART7 mapped to dedicated pins including RTS/CTS flow control and clock output options.

What is the purpose of the BYTE pin on the R5F3650NCDFB#30?

The BYTE pin on the R5F3650NCDFB#30 selects external data bus width: logic low configures a 16-bit bus (D0–D15 active), while logic high selects an 8-bit bus (D0–D7 only). As defined in Table 1.12, this pin must be fixed during design and is tied to VSS in single-chip mode - enabling flexible memory expansion without redesigning the external interface logic.

Can the R5F3650NCDFB#30 generate PWM signals for motor control?

Yes, the R5F3650NCDFB#30 generates PWM signals using Timer A units (five 16-bit timers) in PWM mode, plus two dedicated 8-bit PWM outputs (PWM0/PWM1) on pins P9_3 and P9_4. These support variable duty cycle and frequency control for DC motor speed regulation or LED dimming, with hardware dead time insertion available for three-phase inverter gate driving.