Renesas R5F64178PFB#U0

Overview

R5F64178PFB#U0 from Renesas Electronics is a 64 MHz high-speed 32-bit CISC microcontroller in the R32C/117 Group, featuring 768 KB flash, 63 KB RAM, CAN 2.0B compliance (ISO 11898-1), nine UART channels, and a single multi-master I²C interface - deployed in automotive audio control units requiring deterministic real-time response and robust bus communication.

For engineers reviewing the R5F64178PFB#U0 datasheet, R5F64178PFB#U0 pinout, R5F64178PFB#U0 application, or R5F64178PFB#U0 equivalent, key selection criteria include CAN mailbox count (32), 10-bit A/D converter channel count (34), IEEE-754 single-precision FPU support, 144-pin LQFP package thermal profile, and -40°C to +85°C industrial temperature grade.

Technical Context

The R5F64178PFB#U0 implements the R32C/100 Series CPU core with 108 basic instructions, 15.625 ns minimum instruction execution time at 64 MHz, and integrated multiplier, MAC unit, and single-precision floating-point unit. It supports memory expansion mode and microprocessor mode via optional configuration.

Its peripheral set includes DMAC (4 channels, 57 request sources), three-phase motor control timer (using TA1–TA4 and TB2), CRC-CCITT calculator, and intelligent I/O with 16-bit input capture (16 channels) and output compare (24 channels) - all mapped to dedicated pins in the 144-pin PLQP0144KA-A package.

Key Specifications

Pinout & Package

144-pin plastic molded LQFP (PLQP0144KA-A), 20 mm × 20 mm body, 0.5 mm lead pitch, exposed thermal pad (not electrically connected). Pin 1 index marked per JEDEC MO-220.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F64178PFB#U0, R5F64178PFD#U0 provides expanded I/O and ADC resources in a larger package, while R5F64177PFB#U0 delivers identical form factor and temperature range at reduced memory capacity - enabling scalable design reuse across product tiers.

Availability

R5F64178PFB#U0 is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC communication, office equipment motor control, and medical diagnostic imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for R5F64178PFB#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise markets.

The R32C/117 Group belongs to the high-end R32C/100 Series MCU line, designed specifically for deterministic real-time control in noise-immune, resource-constrained environments such as automotive audio, industrial automation, and precision instrumentation.

FAQ

What is the maximum operating frequency and supply voltage range for the R5F64178PFB#U0?

The R5F64178PFB#U0 operates at a maximum frequency of 64 MHz and supports a supply voltage range of 3.0 V to 5.5 V. This dual-voltage compatibility allows direct interfacing with both legacy 5 V logic families and modern 3.3 V systems without level-shifting circuitry. The 64 MHz speed is achieved using the on-chip PLL with main clock input, and the device maintains full peripheral functionality across the entire voltage range.

Does the R5F64178PFB#U0 include a CAN controller, and what standard does it support?

Yes, the R5F64178PFB#U0 integrates one CAN module compliant with ISO 11898-1 (CAN 2.0B), supporting both standard and extended frame formats. It provides 32 dedicated mailboxes for message filtering and prioritization, enabling robust multi-node communication in automotive and industrial networks. The CAN peripheral includes wakeup capability via CAN0WU pin, allowing the MCU to remain in low-power wait mode until a valid bus event occurs.

How many analog-to-digital converter (ADC) channels does the R5F64178PFB#U0 support, and what is its resolution?

The R5F64178PFB#U0 supports 34 channels of 10-bit analog-to-digital conversion with integrated sample-and-hold functionality. This capability is available only in the 144-pin package variant; the 100-pin R5F64178PFB#U0 variant supports 26 channels. All ADC inputs are multiplexed across dedicated port pins (P10_0–P10_7, P15_0–P15_7, and others), and conversion results are accessible via DMA or CPU polling with configurable sampling clocks.

What package type and pin count does the R5F64178PFB#U0 use?

The R5F64178PFB#U0 uses a 100-pin plastic LQFP package designated PLQP0100KB-A (also referenced as 100P6Q-A), measuring 14 mm × 14 mm with 0.5 mm lead pitch. This package includes two input-only ports and 84 general-purpose CMOS I/O pins, of which 32 are 5 V tolerant. Pin 1 location follows JEDEC-standard index marking, and thermal characteristics are specified for industrial ambient conditions.

Is the R5F64178PFB#U0 supported by on-chip debugging and flash programming tools?

Yes, the R5F64178PFB#U0 fully supports on-chip debugging via Renesas E1/E20 emulators and includes on-board flash programming capability through the built-in bootloader. Debug interfaces include SWD and dedicated debug pins, enabling real-time breakpoints, watchpoints, and memory inspection without halting peripheral operation. Flash programming can be performed in-system using standard UART or CAN bootloaders, eliminating need for external programming hardware in production or field update scenarios.