Renesas R5F3651NDFC#U0

Overview

R5F3651NDFC#U0 from Renesas is a 16-bit M16C/60 Series CPU core microcontroller in a 128-pin LQFP package, operating at up to 32 MHz with 512 KB program ROM, 47 KB data flash, and 16 KB RAM. It integrates dual A/D converters (10-bit × 26 channels), two 8-bit D/A outputs, CEC interface, three-phase motor control timers, and real-time clock - deployed in industrial HMI and consumer audio/video systems requiring deterministic timing and mixed-signal integration.

For engineers reviewing the R5F3651NDFC#U0 datasheet, R5F3651NDFC#U0 pinout, R5F3651NDFC#U0 application, or R5F3651NDFC#U0 equivalent, key selection criteria include its -40°C to +85°C industrial temperature rating, 128-pin PLQP0128KB-A package with dual power domains (VCC1/VCC2), and integrated CEC transceiver for HDMI-CEC compliant remote control subsystems.

Technical Context

The R5F3651NDFC#U0 implements the M16C/60 CPU core with 16×16-bit multiplier and 91 basic instructions, achieving 31.25 ns minimum instruction execution time at 32 MHz. Its memory architecture supports 1 MB address space expandable to 4 MB via external bus interface with 0–8 wait states and four chip select outputs.

Peripheral integration includes six UART/serial channels (UART0–UART2, UART5–UART7), multi-master I²C-bus, two remote control signal receivers (32 kHz operation), CRC-CCITT/CRC-16 calculator, and on-chip dead-time timer for three-phase inverter control using Timer A1/A2/A4 and Timer B2.

Key Specifications

Pinout & Package

Package: 128-pin LQFP (PLQP0128KB-A), 20 mm × 20 mm × 1.4 mm body, 0.4 mm pitch, RoHS-compliant. Dual power domains: VCC1 supplies core/peripherals; VCC2 powers external bus pins for 3 V/5 V interface flexibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F3651EDFC and R5F3651MDFC, the R5F3651NDFC#U0 uniquely balances industrial temperature range, 47 KB data flash endurance, and full 26-channel A/D capability - making it optimal for mixed-signal HMI and CEC-enabled consumer electronics where both analog sensing and HDMI interoperability are required.

Availability

R5F3651NDFC#U0 is available at Aetrix Electronics and suitable for industrial HMI, HDMI-CEC consumer devices, three-phase motor drives, and audio/video remote control hubs requiring stable component supply across extended temperature ranges.

Supply support for R5F3651NDFC#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 specializing in 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 demanding high integration of analog peripherals, motor control logic, and consumer interface protocols like CEC - targeting audio/video, home appliance, and industrial HMI segments.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F3651NDFC#U0?

The R5F3651NDFC#U0 operates at up to 32 MHz with VCC1 and VCC2 supplied between 2.7 V and 5.5 V. Its minimum instruction execution time is 31.25 ns under these conditions. The device supports dual power domains: VCC1 powers the core and internal peripherals, while VCC2 independently supplies the external bus interface for flexible 3 V/5 V system integration. This configuration is confirmed in the R01DS0031EJ0210 datasheet Section 1.2.

Does the R5F3651NDFC#U0 include an integrated HDMI-CEC interface?

Yes, the R5F3651NDFC#U0 integrates a full HDMI-CEC transceiver function on Pin P8_5 (NMI/SD/CEC), supporting transmit/receive, arbitration loss detection, and automatic ACK output at 32 kHz. This eliminates the need for an external CEC PHY IC in compliant consumer electronics designs. The feature is explicitly documented in Tables 1.2 and 1.4 of the R01DS0031EJ0210 datasheet and verified in the block diagram (Figure 1.3).

How many analog-to-digital converter channels does the R5F3651NDFC#U0 support, and what is their resolution?

The R5F3651NDFC#U0 features a 10-bit A/D converter with 26 input channels, including sample-and-hold functionality. Conversion time is specified at 1.72 µs. Channels are distributed across Ports P0, P2, P10, and P9 (AN0_0–AN0_7, AN2_0–AN2_7, AN4–AN7, ANEX0/ANEX1, ADTRG). This capability is detailed in Table 1.2 and confirmed in the pin function tables (Tables 1.7–1.11) of the R01DS0031EJ0210 datasheet.

What package type and pin count does the R5F3651NDFC#U0 use?

The R5F3651NDFC#U0 uses a 128-pin LQFP package designated PLQP0128KB-A (previous code: 128P6Q-A), measuring 20 mm × 20 mm with 0.4 mm pitch. This is confirmed in Table 1.5 (Product List) and Figure 1.5 (Pin Assignment) of the R01DS0031EJ0210 datasheet. The 'FC' suffix in the part number directly indicates this 128-pin LQFP variant.

What is the data flash endurance specification for the R5F3651NDFC#U0?

The R5F3651NDFC#U0 provides 10,000 program/erase cycles for its data flash memory, which totals 47 KB. This is distinct from the 1,000-cycle endurance of program ROM blocks. The specification is explicitly stated in Table 1.2 (Specifications for the 128-Pin Package) of the R01DS0031EJ0210 datasheet and applies to the data flash portion used for parameter storage and field updates.