Renesas R5F64168DFD#U0

Overview

R5F64168DFD#U0 from Renesas Electronics is a 144-pin LQFP 32-bit CISC microcontroller in the R32C/116 Group, featuring a 64 MHz CPU core, 768 KB flash + 8 KB data flash, 63 KB RAM, IEEE-754 single-precision FPU, and 34-channel 10-bit A/D converter. It serves as a high-integration system controller in industrial motor drives requiring precise PWM timing, multi-protocol serial interfacing, and real-time analog acquisition.

For engineers reviewing the R5F64168DFD#U0 datasheet, R5F64168DFD#U0 pinout, R5F64168DFD#U0 application, or R5F64168DFD#U0 equivalent, key selection criteria include its 9-channel UART/I²C/IEBus serial interface support, three-phase motor control timer with 8-bit dead-time programming, 144-pin PLQP0144KA-A package with 32 5 V-tolerant I/Os, and -40°C to +85°C industrial temperature rating.

Technical Context

The R5F64168DFD#U0 implements the R32C/100 Series CPU core with 108 basic instructions, 15.625 ns minimum instruction execution time at 64 MHz, 32×32→64-bit multiplier, and multiply-accumulate unit. Its memory architecture supports up to 4 GB address space with external bus expansion (8/16/32-bit data width, wait-state insertion, 4 chip selects).

It integrates dual DMA controllers (DMAC and DMAC II) with 57 request sources, 4 channels, and chain transfer capability; a 15-bit watchdog timer; and intelligent I/O supporting 16-bit input capture (16 channels) and 16-bit output compare (24 channels) for waveform generation and time measurement.

Key Specifications

Pinout & Package

144-pin plastic molded LQFP (PLQP0144KA-A) package with exposed thermal pad (not electrically connected), 0.5 mm pitch, 20 mm × 20 mm body size, and JEDEC-standard footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F64168PFD#U0, the R5F64168DFD#U0 offers identical functionality at lower qualification cost; compared with R5F64167DFD#U0, it provides 128 KB additional flash and 15 KB more RAM for larger control algorithms and data buffering - critical for predictive maintenance features in industrial equipment.

Availability

R5F64168DFD#U0 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and home appliance mainboards requiring stable component supply across multi-year production cycles.

Supply support for R5F64168DFD#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 is a global semiconductor leader specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.

The R32C/116 Group belongs to the high-end R32C/100 Series, designed for demanding real-time control applications requiring high code efficiency, extensive peripheral integration, and industrial-grade reliability in compact LQFP packages.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F64168DFD#U0?

The R5F64168DFD#U0 operates at a maximum frequency of 64 MHz with a supply voltage range of 3.0 V to 5.5 V. This specification applies to the high-speed version denoted by the absence of 'H' in the part number suffix; the device draws 45 mA at 5.0 V and 64 MHz, and enters wait mode consuming only 8 µA when running at 32.768 kHz on the sub-clock oscillator. The R5F64168DFD#U0 maintains full peripheral functionality across this voltage range.

Does the R5F64168DFD#U0 support hardware-based cryptographic functions or secure boot?

No, the R5F64168DFD#U0 does not include hardware cryptographic accelerators, TRNG, or secure boot circuitry. It provides ROM code protection and ID code protection for flash memory security, but lacks AES, SHA, or public-key acceleration blocks. For applications requiring certified secure boot, Renesas' RA-family or RX72M MCUs are recommended alternatives; the R5F64168DFD#U0 is intended for deterministic real-time control where functional safety-not information security-is the primary requirement.

How many 5 V-tolerant I/O pins does the R5F64168DFD#U0 have, and which ports are they located on?

The R5F64168DFD#U0 has exactly 32 5 V-tolerant input pins, located across Ports P4 (P4_0–P4_7), P5 (P5_4–P5_7), P6 (P6_0–P6_7), P7 (P7_0–P7_7), and P8 (P8_0–P8_3). These pins tolerate 5 V input levels while operating from a 3.3 V or 5.0 V VCC supply, enabling direct interface with legacy 5 V logic, sensors, and industrial I/O without level-shifting circuitry. Output drive strength remains CMOS-compatible at the core supply voltage.

Can the R5F64168DFD#U0 execute code directly from RAM, and what is its external bus capability?

Yes, the R5F64168DFD#U0 supports XIP (execute-in-place) from external memory via its 4 GB address space and configurable external bus interface. It provides 4 chip select outputs, wait-state insertion, and selectable bus format (separate or multiplexed) with 8/16/32-bit data width - enabling direct execution from parallel NOR flash or SRAM. Internal RAM execution is also supported for time-critical ISR routines. The R5F64168DFD#U0's external bus controller handles address latching, strobe generation, and bus arbitration without CPU intervention.

What debugging interfaces are available on the R5F64168DFD#U0, and is JTAG the only option?

The R5F64168DFD#U0 supports JTAG-based on-chip debugging exclusively, compliant with IEEE 1149.1. It does not implement SWD, cJTAG, or proprietary debug interfaces. The JTAG port (TCK/TMS/TDI/TDO/TRST) enables full boundary-scan testing, real-time trace, and flash programming through Renesas E2 emulator or compatible third-party tools. Debug access requires no dedicated pins beyond the standard JTAG signals, and the R5F64168DFD#U0 supports hot-plug debugging without reset assertion.