Renesas M30281FAHP#UFB

Overview

M30281FAHP#UFB from Renesas Electronics is a 16-bit single-chip microcontroller in the M16C/28 Group, featuring 256 KB on-chip flash memory, 16 KB RAM, and integrated peripherals including UART, I²C-compatible serial interface, 16-bit timer arrays, and 10-bit ADC. It operates at up to 20 MHz CPU clock frequency with 3.0–5.5 V supply range and supports industrial temperature range (−40°C to +85°C). It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the M30281FAHP#UFB datasheet, M30281FAHP#UFB pinout, M30281FAHP#UFB application, or M30281FAHP#UFB equivalent, key selection criteria include its 100-pin LQFP package, dual-voltage I/O capability (5 V tolerant), on-chip voltage detector with reset threshold at 2.7 V, and support for WAIT/STOP low-power modes - all critical for embedded motion control and sensor-integrated industrial equipment design.

Technical Context

The M30281FAHP#UFB implements the M16C CPU core with 16-bit ALU, 24-bit address space, and instruction set optimized for real-time control. Its clock system integrates main crystal oscillator (1–20 MHz), sub-oscillator (32.768 kHz), on-chip oscillator, and PLL for flexible clock generation - enabling precise timing for PWM-driven motor phases and synchronized ADC sampling.

Peripheral integration includes three 16-bit timer units (each with capture/compare/PWM output), eight-channel 10-bit ADC with conversion time ≤1.7 µs, and dual serial interfaces supporting UART and I²C protocols. The device supports hardware watchdog timer, low-voltage detection interrupt, and oscillation stop detection - ensuring robust operation in electrically noisy factory environments.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with M30281FAHP#UFB, R5F102AAASP#30 offers lower system cost but reduced memory and peripheral headroom, while MB95560PFT-G-SNE1 provides ARM compatibility at the expense of higher active current and less mature industrial motor control reference designs.

Availability

M30281FAHP#UFB is available at Aetrix Electronics and suitable for industrial motor drive, smart sensor node, and programmable logic controller I/O module applications requiring stable component supply and long-term lifecycle assurance.

Supply support for M30281FAHP#UFB 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 infrastructure markets.

The M16C/28 Group, including M30281FAHP#UFB, was designed for cost-effective, high-reliability embedded control in factory automation, motor drives, and sensor-based equipment - emphasizing real-time responsiveness, mixed-signal integration, and industrial-grade robustness.

FAQ

What is the maximum operating frequency of the M30281FAHP#UFB?

The M30281FAHP#UFB supports a maximum CPU clock frequency of 20 MHz when using the main crystal oscillator or PLL-derived clock. This frequency is achievable across the full industrial temperature range (−40°C to +85°C) and 3.0–5.5 V supply voltage, enabling deterministic execution of motor control algorithms with cycle-accurate timing constraints. The M30281FAHP#UFB's internal PLL allows multiplication of lower-frequency crystals to reach this speed without external clock generators.

Does the M30281FAHP#UFB support in-system programming (ISP)?

Yes, the M30281FAHP#UFB supports in-system programming via its on-chip bootloader, which can be activated through UART or dedicated programming pins. This enables firmware updates without removing the device from the PCB. The M30281FAHP#UFB's 256 KB flash memory is organized to allow sector erase and byte/word programming, supporting field upgrades while preserving calibration data in protected sectors.

What are the low-power modes supported by the M30281FAHP#UFB?

The M30281FAHP#UFB supports WAIT mode (CPU halted, peripherals active) and STOP mode (all clocks stopped except optional sub-oscillator). In STOP mode, typical current consumption is ≤10 µA at 25°C, with wake-up possible via external interrupt, timer match, or sub-oscillator alarm. The M30281FAHP#UFB's low-power architecture makes it suitable for battery-backed industrial sensors where multi-year operation is required.

Is the M30281FAHP#UFB pin-compatible with other M16C/28 devices?

The M30281FAHP#UFB uses a 100-pin LQFP package consistent with the M16C/28 Group's standard pinout for that footprint, including shared signal assignments for power, reset, clock, and primary peripherals. However, functional differences exist between variants (e.g., flash size, ADC channel count, timer features), so software and peripheral configuration must be verified per device. The M30281FAHP#UFB is not guaranteed to be drop-in compatible with all M16C/28 derivatives without validation.

What is the ADC resolution and conversion time of the M30281FAHP#UFB?

The M30281FAHP#UFB integrates an 8-channel, 10-bit successive approximation ADC with a maximum conversion time of 1.7 µs per sample under optimal conditions (VCC = 5.0 V, fAD = 10 MHz). It supports software, timer, and external trigger sources, and includes built-in sample-and-hold circuitry. The M30281FAHP#UFB's ADC meets requirements for current sensing and analog sensor interfacing in motor control and industrial monitoring applications.