Renesas R5F72166ADFA#V1

Overview

R5F72166ADFA#V1 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring 1 MB of on-chip Flash memory, 128 KB RAM, and integrated peripherals including USB 2.0 FS, CAN controller, 12-bit ADC (24 channels), and MTU2S timer units. It operates at up to 100 MHz and targets industrial motor control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F72166ADFA#V1 datasheet, R5F72166ADFA#V1 pinout, R5F72166ADFA#V1 application, or R5F72166ADFA#V1 equivalent, key selection criteria include its SH-2A CPU architecture, 100 MHz max frequency, USB/CAN dual-interface capability, 12-bit ADC resolution with sample-and-hold, and support for single-chip mode with external bus interface disabled.

Technical Context

The R5F72166ADFA#V1 implements the SH-2A superscalar RISC core with dual-issue pipeline, supporting both integer and floating-point operations via integrated FPU. Its system architecture includes a 32-bit data bus, 32-bit address space, and tightly coupled peripheral modules accessed via AHB/APB bridges.

Peripheral integration follows Renesas' SH7216 Group architecture: CPG provides programmable clock generation with PLL, OSCCR enables oscillation stop detection, and INTC supports 192 interrupt sources with 7 priority levels. The device uses a unified memory map with boot ROM, user Flash, RAM, and peripheral register regions mapped to fixed addresses.

Key Specifications

Pinout & Package

The R5F72166ADFA#V1 is housed in a 176-pin LQFP package with exposed thermal pad (EP), rated for industrial temperature range (−40°C to +85°C). Pin assignments follow SH7216 Group standard layout with dedicated power/ground pairs, differential USB D+/D−, CANH/CANL, and multiplexed I/O grouped by function domain (e.g., ADC inputs on PORTA, UART on PORTC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72166ADFA#V1, the R5F72165ADFA#V1 reduces memory and ADC resources for lower-tier control tasks, while the R5F72167ADFA#V1 extends connectivity with Ethernet-neither is pin-compatible, but all three share identical peripheral register maps and toolchain support.

Availability

R5F72166ADFA#V1 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, and energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for R5F72166ADFA#V1 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 industrial, automotive, and enterprise applications.

The SH7216 Series, including R5F72166ADFA#V1, was designed for deterministic real-time control in resource-constrained industrial environments, emphasizing integrated analog/mixed-signal capability and multi-protocol connectivity.

FAQ

What is the maximum operating frequency of the R5F72166ADFA#V1?

The R5F72166ADFA#V1 operates at a maximum frequency of 100 MHz when powered at 3.3 V and within the industrial temperature range (−40°C to +85°C). This frequency is achieved using the on-chip PLL with an external 10 MHz crystal, and timing-critical peripherals (e.g., ADC, MTU2S) are synchronized to derived clocks meeting their respective setup/hold requirements. The R5F72166ADFA#V1 datasheet specifies AC characteristics only at this rated speed.

Does the R5F72166ADFA#V1 include a hardware floating-point unit?

Yes, the R5F72166ADFA#V1 integrates a full IEEE 754-compliant floating-point unit (FPU) as part of its SH-2A CPU core. This FPU supports single-precision arithmetic and is accessible via dedicated instructions (e.g., fadd, fmul, fsqrt). The R5F72166ADFA#V1 leverages this unit to accelerate computationally intensive tasks such as motor control algorithms and sensor fusion without software emulation latency.

What USB functionality does the R5F72166ADFA#V1 support?

The R5F72166ADFA#V1 features a USB 2.0 Full-Speed controller with integrated PHY, supporting both host and device modes. It implements standard USB classes including CDC (virtual COM port), HID (human interface devices), and MSC (mass storage) without external transceivers. The R5F72166ADFA#V1 USB module includes endpoint buffers, descriptor handling, and suspend/resume logic compliant with USB specification rev. 2.0.

How many analog-to-digital converter channels does the R5F72166ADFA#V1 provide?

The R5F72166ADFA#V1 includes a 12-bit successive-approximation ADC with 24 input channels multiplexed across PORTA pins. It supports simultaneous sampling on up to four channels using shared sample-and-hold circuits, with conversion times as fast as 1.1 μs. Reference voltages (AVREFH/AVREFL) are externally configurable, and the ADC module interfaces directly with the DMAC for zero-CPU-overhead data transfer in the R5F72166ADFA#V1.

Is the R5F72166ADFA#V1 pin-compatible with other SH7216 Series microcontrollers?

No, the R5F72166ADFA#V1 is not universally pin-compatible across the SH7216 Series. While it shares the same 176-pin LQFP package and core pinout structure (e.g., power, reset, crystal, USB, CAN), peripheral pin mappings differ between variants-for example, ADC channel allocation and SCI function assignment vary. The R5F72166ADFA#V1 pin assignment is defined in Section 1.3 of its Hardware User's Manual (Rev. 4.00), and migration requires verification of signal routing against target variant datasheets.