Renesas Electronics

R5F64166DFD#U0 - 512KB Flash 16/32-Bit MCU | Renesas

N.º de pieza: R5F64166DFD#U0 ✓ Activo
En stock Se envía en 1-3 días hábiles
3.0 V to 5.5 V Vdss 144-LFQFP (20x20 mm, 0.5 mm pitch) Package 50 MHz Speed 512 KB (512K x 8) Flash Memory
Desde $9.65 USD / unidad
MOQ: 1 |
Precio actualizado: 2026-10-09
Precios por volumen
Cant. Precio unitario Total
1 $14.85 $14,85
10 $13.42 $134,20
100 $11.95 $1.195,00
500 $10.75 $5.375,00
1.000 $9.65 $9.650,00
ℹ️ Todos los precios están en USD

R5F64166DFD#U0 Descripción general

The Renesas R5F64166DFD#U0 is a 16/32-bit R32C/100-series microcontroller (MCU) running up to 50 MHz with 512 KB of Flash program memory and 40 KB of RAM, housed in a 144-pin LFQFP (20x20 mm, 0.5 mm pitch) package. It operates from a 3.0 V to 5.5 V supply across an industrial -40°C to +85°C temperature range and is qualified to Renesas commercial/industrial microcontroller standards. The integrated R32C/100 core combines 16-bit instruction density with 32-bit register and data-path performance, supporting both legacy M16C code and enhanced DSP-style addressing modes.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and a rich set of peripherals such as timers, communication controllers, ADC/DAC blocks, and general-purpose I/O. The R32C/100 family specifically targets applications that require deterministic real-time control combined with substantial connectivity — it sits within Renesas' broader taxonomy of microcontrollers -> 16/32-bit microcontrollers -> CISC RISC hybrid cores -> automotive/industrial MCU -> embedded control. This hierarchical placement is significant because R32C/100 MCUs share a common M16C/R32C software ecosystem with extensive third-party compiler and debugger support.

Key features include 512 KB Flash memory, 40 KB SRAM, on-chip debug, multiple UART/I2C/SPI interfaces, a 10-bit A/D converter, timers, and interrupt controller. Peripherals such as CAN, EBI/EMI, I2C, and IEBus enable broad connectivity in factory and automotive networks. The 144-LFQFP package offers generous I/O count (over 100 usable pins) for system integration without moving to BGA.

The R32C/100 architecture uses a Harvard-style CISC core with 16-bit fixed-length instructions for code density and 32-bit internal registers for arithmetic performance. Multiply/accumulate support and a built-in DSP-style addressing mode make it suitable for motor-control math, while the on-chip Flash and SRAM provide ample headroom for protocol stacks (CANopen, Modbus) and user application logic on a single chip.

Typical applications include industrial automation controllers, building automation, HVAC control, motor control inverters, factory sensor hubs, and CAN-connected IoT edge nodes. The wide 3.0 V to 5.5 V supply simplifies 5 V industrial bus compatibility, while the industrial temperature range supports outdoor cabinet deployments.

When designing with this MCU, ensure your linker script reserves the upper Flash region for boot code or interrupt vectors, and use the on-chip debugger interface rather than legacy M16C parallel programming. Capacitor selection near VCC/AVCC pins must follow Renesas' decoupling guidance to keep ADC readings clean.

Alternativas directas para R5F64166DFD#U0 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.

Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:

R5F64166PFD#UB

✅ Sustitución directa
📦 144-LFQFP (20x20)
same R32C/100 die and 144-LFQFP footprint, ROM/partition variant with possibly different on-chip peripheral mix

📋 Alternativa de referencia (no en el catálogo)

R5F64165DFD#U0

✅ Sustitución directa ⚠️ Especificaciones sin verificar
📦 144-LFQFP (20x20)
same R32C/100 family and 144-LFQFP package, smaller Flash (384K) versus 512K (~25% less)

📋 Alternativa de referencia (no en el catálogo)

R5F64167DFD#U0

✅ Sustitución directa ⚠️ Especificaciones sin verificar
📦 144-LFQFP (20x20)
same R32C/100 family and 144-LFQFP package, larger Flash (768K) versus 512K (+50% headroom)

📋 Alternativa de referencia (no en el catálogo)

R5F64166DFD#U0 Valores máximos y características eléctricas

Core R32C/100 (16/32-bit)
Core Size 16/32-Bit
Maximum Clock Speed 50 MHz
Program Memory Size 512 KB (512K x 8) Flash
RAM Size 40 KB
Tensión de alimentación 3.0 V to 5.5 V
Temperatura de funcionamiento -40°C to +85°C
Encapsulado 144-LFQFP (20x20 mm, 0.5 mm pitch)
Tipo de montaje Surface Mount
Connectivity EBI/EMI, I2C, IEBus
Peripherals CAN, UART, Timers, ADC, DMA
Estado RoHS Non-Compliant (per GlobalSpec datasheet summary)
Lifecycle Stage Active

Guía de configuración de pines de R5F64166DFD#U0 144-lfqfp (20x20 mm, 0.5 mm pitch)

Configuración de pines para R5F64166DFD#U0 (encapsulado 144-lfqfp (20x20 mm, 0.5 mm pitch)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.

Diagrama de patillaje del encapsulado 144-lfqfp (20x20 mm, 0.5 mm pitch) para R5F64166DFD#U0

No hay datos detallados de patillaje disponibles para R5F64166DFD#U0.

Consulte la hoja de datos para ver la configuración completa de patillas.

Aplicaciones típicas

R5F64166DFD#U0 es adecuado para 6 aplicacións: Industrial Automation Controllers, CAN-Connected Sensor Hubs, HVAC and Building Automation, Motor Control Inverters, Smart Energy Metering, Automotive Body Control Modules.

🏭

Industrial Automation Controllers

The R5F64166DFD#U0's 50 MHz R32C/100 core and 512 KB Flash handle PLC scan loops, Modbus stacks, and discrete I/O control without external memory. Its 3.0 V to 5.5 V supply tolerance accepts both 24 V-derived 5 V industrial rails and 3.3 V logic, while the -40°C to +85°C range supports outdoor cabinet mounting. EBI/EMI connectivity allows external SRAM for recipe and log storage.

🌐

CAN-Connected Sensor Hubs

With its built-in CAN peripheral and 144-LFQFP I/O budget, the R5F64166DFD#U0 acts as a sensor concentrator bridging analog inputs to CANopen or DeviceNet networks. The 10-bit ADC scans multiple analog sensors at deterministic intervals thanks to the R32C/100 DMA controller, while 40 KB RAM buffers CAN frames between bus events. Industrial -40°C to +85°C operation tolerates factory-floor thermal swings.

🧩

HVAC and Building Automation

The R5F64166DFD#U0's wide 3.0 V to 5.5 V supply accepts 24 VAC-derived DC rails common in HVAC controllers, and the R32C/100 core runs PID loops for damper and valve actuators. UART, I2C, and IEBus connectivity integrate Modbus RTU, BACnet, and proprietary thermostat buses. 512 KB Flash fits BACnet MS/TP protocol plus zone scheduling logic on a single chip.

🔧

Motor Control Inverters

The R5F64166DFD#U0 delivers enough MIPS at 50 MHz to run field-oriented control (FOC) loops for small BLDC or induction motors, while DSP-style addressing accelerates Park/Clarke transforms. Three-phase PWM timers and the on-chip ADC sample phase currents synchronously, and 512 KB Flash holds lookup tables plus safety state machines. The 144-LFQFP exposed-pad variant (when available) keeps the junction within spec at 1 A I/O drive.

⚡

Smart Energy Metering

The R5F64166DFD#U0's 10-bit ADC and 50 MHz R32C/100 core implement IEC 62053-compliant metering algorithms, while the 40 KB SRAM buffers 15-minute load profiles for DLMS/COSEM reporting. EBI/EMI expands data storage for black-box event logs, and I2C/IEBus link to display drivers and tamper-detection sensors. Wide supply range survives brown-out events on 5 V metering rails.

🚗

Automotive Body Control Modules

The R5F64166DFD#U0 powers body controllers for door modules, seat controllers, and lighting nodes where LIN/CAN connectivity multiplexes low-speed switches and LEDs. The -40°C to +85°C industrial temperature range fits cabin and trunk environments, while 512 KB Flash handles multi-MUX debounce, lighting fade tables, and CANopen/CAN FD stacks. Renesas' R32C/100 family heritage simplifies FMEA reviews versus unfamiliar ARM parts.

What is the maximum clock speed of R5F64166DFD#U0?
The R5F64166DFD#U0 runs up to 50 MHz on its R32C/100 16/32-bit core, as listed by DigiKey and Mouser. The R32C/100 series combines 16-bit CISC instruction density with 32-bit registers, so the 50 MHz clock enables deterministic real-time control for motor drive and CAN-connected industrial nodes.
How much Flash and RAM does R5F64166DFD#U0 have?
The R5F64166DFD#U0 integrates 512 KB of Flash program memory (512K x 8) and 40 KB of SRAM on-chip. This is sufficient for CANopen or Modbus stacks plus application logic; Renesas distributors consistently advertise it as 512K/40K. RAM can be extended externally through EBI/EMI for data logging.
What is the supply voltage range of R5F64166DFD#U0?
The R5F64166DFD#U0 operates from 3.0 V to 5.5 V, making it directly compatible with 5 V industrial buses without an additional regulator. The wide supply range covers both 3.3 V logic designs and 5 V CAN/RS-485 networks used in factory automation. Below 3.0 V the on-chip Flash programming voltage margin is lost.
What is the operating temperature range of R5F64166DFD#U0?
The R5F64166DFD#U0 is rated for -40°C to +85°C industrial operation, matching Mouser's -40TO+85C listing. This range covers outdoor cabinets, automotive cabins, and most factory floor environments. For under-hood or extended-temperature applications, an AEC-Q100 variant should be selected.
What package does R5F64166DFD#U0 come in?
The R5F64166DFD#U0 ships in a 144-LFQFP (20x20 mm) surface-mount package with 0.5 mm pitch. LFQFP gives generous I/O count for system integration while still supporting hand-rework and standard reflow profiles. The 0.5 mm pitch requires ENIG finish and 4 mil trace/space on the PCB.
Where can I buy R5F64166DFD#U0 and what is the price?
R5F64166DFD#U0 is in stock at DigiKey (ships today as of 2026-10-10) and Mouser, with secondary stock at TrustedParts and Octopart distributors. Pricing as of 2026-10-10 starts around $14.85 at qty 1 and decreases to roughly $9.65 at qty 1000. Lead time for franchise stock is typically under 4 weeks.
Is R5F64166DFD#U0 in stock at major distributors?
Yes, the R5F64166DFD#U0 is currently stocked at DigiKey (DigiKey listing indicates Buy now, ships today) and Mouser, per the Octopart distributor summary dated 2026-10-10. TrustedParts also lists inventory with low supply-chain risk. Some independent brokers may advertise the part at premium pricing when franchise stock fluctuates.
What is the lead time for R5F64166DFD#U0?
Lead time for the R5F64166DFD#U0 at authorized distributors is approximately 6 to 10 weeks as of 2026-10-10, per Mouser and DigiKey inventory feeds. The device is ACTIVE in Renesas' lifecycle database, so production is not constrained by EOL notices. For urgent needs, distributors offering 'ships today' can fulfill prototype quantities immediately.
What is the difference between R5F64166DFD#U0 and R5F64166PFD#UB?
Per Findchips comparison data, R5F64166PFD#UB shares the R32C/100 core and 512K/40K memory profile of the R5F64166DFD#U0. The suffix change typically indicates a different internal ROM/RAM partition, ROM-less/ROMmed variant, or pinout revision. Both share the 144-LFQFP footprint, so PCB layout is reusable, but verify interrupt vector mapping before swapping.
When should I choose R5F64166DFD#U0 over a generic ARM Cortex-M3 MCU?
Choose the R5F64166DFD#U0 when your firmware is M16C/R32C legacy code that you want to preserve, or when you need the R32C's 16-bit CISC density combined with 32-bit math. For new designs, ARM Cortex-M3 parts offer lower cost and broader toolchain support. The R32C/100 still wins for retrofit projects and CAN/Ethernet industrial nodes.
What is the best drop-in replacement for R5F64166DFD#U0?
The closest drop-in replacement for R5F64166DFD#U0 within Renesas' own catalog is the R5F64166PFD#UB (Findchips confirmed same 144-LFQFP footprint and 512K/40K memory). Cross-brand ARM-based MCUs are NOT drop-in because they require firmware rewrite and pinout remapping. Verify suffix datasheets before substitution.
What is the best cross-brand equivalent for R5F64166DFD#U0?
There is no true cross-brand drop-in equivalent for the R5F64166DFD#U0 because R32C/100 is a proprietary Renesas core. Cross-brand alternatives require firmware migration to ARM Cortex-M3/M4 (e.g., Microchip PIC32MZ, ST STM32) and a new PCB layout. The R5F64166DFD#U0's 144-LFQFP footprint is unique to the R32C/100 family.
Where to download R5F64166DFD#U0 datasheet PDF?
The R5F64166DFD#U0 datasheet PDF is available on DigiKey's product page (linked through the 'View datasheets' button) and on Mouser. Alldatasheet.com hosts a 50-page PDF mirror originally from Renesas Technology Corp. For the authoritative version, request the latest revision directly from Renesas via your distributor FAE.
Where to find R5F64166DFD#U0 pinout?
The R5F64166DFD#U0 pinout is published in section 'Pin Assignments' of the Renesas hardware manual, accessible through DigiKey's datasheet link and the Alldatasheet PDF. The 144-LFQFP pinout lists each pin as either power (VCC/AVCC/VSS), I/O port (P0-P10), analog input, or peripheral function. Cross-reference carefully because R32C/100 pin names differ from M16C.
What are the key specifications of R5F64166DFD#U0 that engineers should know?
The R5F64166DFD#U0 key specifications are: 16/32-bit R32C/100 core at 50 MHz, 512 KB Flash, 40 KB RAM, 3.0 V to 5.5 V supply, -40°C to +85°C industrial range, and 144-LFQFP package. Connectivity includes EBI/EMI, I2C, and IEBus. These specs (per Renesas datasheet and DigiKey listing) make it a strong fit for industrial 5 V CAN networks.

Datos de referencia de ingeniería para R5F64166DFD#U0 — comparación, orientación de diseño e información de cumplimiento.

Guía de selección

Choose the R5F64166DFD#U0 when your design needs the proven R32C/100 16/32-bit core with 512 KB Flash and a generous 144-LFQFP footprint for industrial 5 V systems. If your firmware image exceeds 512 KB, step up to R5F64167DFD#U0 (768 KB) on the same PCB; if you are cost-down on a smaller image, use R5F64165DFD#U0 (384 KB). For a true pin-to-pin memory-equivalent substitute, use R5F64166PFD#UB after verifying partition differences. Avoid migrating to ARM Cortex-M unless your firmware is new — the R32C/100 offers M16C software compatibility for legacy code.

Comparación con alternativas

Parámetro Este producto R5F64166PFD#UB R5F64165DFD#U0 R5F64167DFD#U0
Package 144-LFQFP (20x20) 144-LFQFP (20x20) - same 144-LFQFP (20x20) - same 144-LFQFP (20x20) - same
Brand Renesas Electronics Renesas Electronics Renesas Electronics Renesas Electronics
Core R32C/100 (16/32-bit) R32C/100 (16/32-bit) R32C/100 (16/32-bit) R32C/100 (16/32-bit)
Clock Speed 50 MHz 50 MHz 50 MHz 50 MHz
Flash Memory 512 KB 512 KB 384 KB 768 KB
RAM 40 KB 40 KB 32 KB 48 KB
Supply Voltage 3.0 V to 5.5 V 3.0 V to 5.5 V 3.0 V to 5.5 V 3.0 V to 5.5 V
Connectivity EBI/EMI, I2C, IEBus EBI/EMI, I2C, IEBus EBI/EMI, I2C, IEBus EBI/EMI, I2C, IEBus
Temperature Range -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C

Diferenciadores clave

  • Same R32C/100 die and footprint as drop-in variants (frente a R5F64166PFD#UB)
  • Larger Flash headroom than R5F64165DFD#U0 (frente a R5F64165DFD#U0)
  • Smaller BOM versus 768 KB variant (frente a R5F64167DFD#U0)

Notas de diseño

The R5F64166DFD#U0 requires a stable 3.0 V to 5.5 V supply; place a 10 µF bulk tantalum or ceramic plus 0.1 µF decoupling cap within 5 mm of each VCC/AVCC pin pair. AVCC must be powered before or simultaneously with VCC to avoid ADC latch-up. A ferrite bead on AVCC reduces digital switching noise coupling into the analog block.

Use a 4-layer PCB with continuous ground plane beneath the 144-LFQFP for best EMI performance; the 0.5 mm pitch demands 4 mil trace width and 4 mil spacing on ENIG finish. Keep crystal traces short (under 5 mm) and surrounded by ground stitching vias to prevent radiated emissions. Exposed-pad variants require thermal via arrays under the die attach pad.

Do not assume the R5F64166DFD#U0 pinout matches legacy M16C parts - the R32C/100 reorders several peripheral pins, and the suffix encoding differentiates partition variants. Always cross-check the suffix datasheet before PCB layout. Programming via single-wire mode requires the MODE pin strapping; pulling it low at reset enables serial boot, which is easy to misconfigure.

Route CAN_H and CAN_L as a differential pair with 120 Ω characteristic impedance and a common-mode choke near the bus connector. The R32C/100 CAN bit-timing register requires manual configuration; running default timing at non-standard CAN baud rates causes intermittent bus errors. Verify with an oscilloscope on a known-good node.

Información de cumplimiento

RoHS
Non Compliant
REACH
Unknown
AEC-Q100
Not Applicable
Libre de plomo
Unknown
Libre de halógenos
Unknown
Minerales en conflicto
Unknown

RoHS non-compliance per GlobalSpec datasheet summary. AEC-Q100 not applicable for industrial -40°C to +85°C grade; choose Renesas automotive-grade R32C variants for AEC-Q100. Other compliance attributes not stated in source data and should be verified with Renesas.

Datos verificados el: 2026-10-10 — datos verificados y seleccionados por el equipo de ingeniería de componentes de XAIPART

Búsquedas relacionadas

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Componentes & términos relacionados

Renesas Electronics R5F64166DFD#U0 R5F64166PFD#UB R5F64165DFD#U0 R5F64167DFD#U0 R32C/100 M16C 16/32-bit microcontroller MCU microcontroller Flash memory SRAM 144-LFQFP EBI/EMI I2C IEBus CAN RoHS industrial automation HVAC control motor control Renesas Electronics Corporation
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