Renesas R5F64114DFB#UA

Overview

R5F64114DFB from Renesas Electronics is a 32-bit CISC microcontroller in the R32C/111 Group, featuring a 50 MHz CPU core, 256 KB flash + 8 KB data flash, 40 KB RAM, and 100-pin LQFP (PLQP0100KB-A) packaging. It integrates UART × 9, 10-bit A/D converter (26 channels), dual 8-bit D/A converters, three-phase motor control timer, FPU, and DMAC - deployed in industrial metering, home appliance control, and office equipment.

For engineers reviewing the R5F64114DFB datasheet, R5F64114DFB pinout, R5F64114DFB application, or R5F64114DFB equivalent, key selection criteria include its 100-pin LQFP package with 82 CMOS I/O ports, -40°C to +85°C operating range (D version), IEEE-754 single-precision FPU, and support for external bus expansion up to 4 Gbytes.

Technical Context

The R5F64114DFB implements the R32C/100 Series CPU core with 108 basic instructions, 20 ns minimum instruction execution time at 50 MHz, and hardware multiplier/accumulate unit. Its memory subsystem includes 256 KB on-chip flash (1,000 program/erase cycles), 40 KB RAM, and dual 4 KB data flash blocks with ROM code protection and ID code lock.

Peripherals include four-channel DMAC with cycle-steal and repeat transfer modes, nine UART channels supporting I²C-bus (UART0–UART6), three-phase motor control timer using TA1–TA4 and TB2, and intelligent I/O with 16 input-capture and 19 output-compare units - all operating under wait/stop low-power modes with 8 µA current draw at 3.3 V in wait mode.

Key Specifications

Pinout & Package

Package: 100-pin plastic molded LQFP (PLQP0100KB-A), 14 mm × 14 mm body, 0.5 mm lead pitch, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F64114DFB, R5F64115DFB and R5F64112DFB retain identical I/O count, peripheral set, and thermal rating while scaling flash capacity - enabling seamless migration within the same PCB layout and software framework.

Availability

R5F64114DFB is available at Aetrix Electronics and suitable for industrial metering, home appliance control, and office equipment requiring stable component supply across extended product lifecycles.

Supply support for R5F64114DFB 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The R32C/111 Group belongs to the high-end R32C/100 Series MCU line, designed for deterministic real-time control in resource-constrained industrial systems requiring integrated analog, motor control, and communication peripherals.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for the R5F64114DFB?

The R5F64114DFB operates at a maximum CPU frequency of 50 MHz with VCC1 and VCC2 supplied between 3.0 V and 5.5 V. At 50 MHz and 5.0 V, typical active current consumption is 32 mA; in wait mode at 3.3 V with 32.768 kHz sub-clock, it draws only 8 µA - making it suitable for battery-backed industrial monitoring nodes where low standby power is critical. The R5F64114DFB maintains full peripheral functionality across this voltage range.

Does the R5F64114DFB support external memory expansion, and what bus configurations are available?

Yes, the R5F64114DFB supports external memory expansion with a 4 Gbyte address space, 4 chip-select outputs, and configurable bus format (separate or multiplexed). It allows 8-bit or 16-bit data bus width selection and wait-state insertion for interfacing with slower SRAM, NOR flash, or FPGA peripherals. The R5F64114DFB uses dedicated or time-multiplexed address/data pins (e.g., A0/D0–A15/D15) and supports byte-control signaling (BC0/BC1) for precise 8/16-bit access alignment - essential for legacy display or communication controller interfaces.

How many UART channels does the R5F64114DFB provide, and which support I²C-bus functionality?

The R5F64114DFB provides nine independent UART channels (UART0 through UART8). UART0 to UART6 support I²C-bus functionality in simplified mode - meaning they can operate as I²C master or slave using shared SDA/SCL pins without requiring dedicated I²C hardware. This enables cost-effective multi-sensor connectivity (e.g., temperature, humidity, and pressure sensors) over a single two-wire bus while preserving UART7 and UART8 for RS-232/RS-485 communication. The R5F64114DFB's UART/I²C pin mapping is fixed per channel and documented in the pin characteristics table.

What analog capabilities does the R5F64114DFB offer, and how are they mapped to physical pins?

The R5F64114DFB integrates a 10-bit successive-approximation ADC with up to 26 input channels (AN0_0–AN0_7, AN_0–AN_7, AN2_0–AN2_7) and two 8-bit DAC outputs (DA0, DA1). ADC inputs are distributed across P0, P10, and P2 ports - for example, AN0_0–AN0_7 map to P0_0–P0_7, while AN_0–AN_7 connect to P10_0–P10_7 with key-input interrupt capability. DAC outputs appear on P9_3 (DA0) and P9_4 (DA1). All analog functions share AVCC/AVSS power domains and require proper decoupling per the R5F64114DFB hardware design guidelines.

Is the R5F64114DFB pin-compatible with other members of the R32C/111 Group, and what package options exist?

Yes, the R5F64114DFB is pin-compatible with all 100-pin variants in the R32C/111 Group, including R5F64110DFB, R5F64111DFB, and R5F64112DFB - all use the PLQP0100KB-A (100P6Q-A) LQFP package. It is not compatible with 64-pin variants (e.g., R5F6411EDFN) due to differing pin count and signal allocation. The R5F64114DFB shares identical mechanical footprint, thermal pad absence, and solder-reflow profile with other 100-pin LQFP members, enabling drop-in replacement when flash/RAM requirements change - provided firmware accommodates memory map differences.