Renesas M30281F8HP#U5B

Overview

M30281F8HP#U5B from Renesas Electronics is a 16-bit single-chip microcontroller in the M16C/28 Group, featuring 128 KB on-chip flash memory, 8 KB RAM, and a maximum CPU clock of 20 MHz. It integrates UART, I²C-compatible serial interface, 16-bit timer/counters, and 10-bit ADC - designed for real-time control in industrial motor drives and sensor-based embedded systems.

For engineers reviewing the M30281F8HP#U5B datasheet, M30281F8HP#U5B pinout, M30281F8HP#U5B application, or M30281F8HP#U5B equivalent, key selection considerations include its 100-pin LQFP package, 2.7–5.5 V operating voltage range, built-in low-voltage detection circuit, and support for WAIT/STOP power-saving modes in resource-constrained environments.

Technical Context

The M30281F8HP#U5B implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both CISC instruction set and on-chip debug functionality via dedicated pins. Its clock system includes main crystal (1–20 MHz), sub-crystal (32.768 kHz), on-chip oscillator, and PLL for flexible frequency synthesis up to 20 MHz.

Peripheral integration includes three 16-bit timer/counters with PWM output capability, one 8-bit reload timer, a 10-bit 16-channel ADC with conversion time of 1.7 µs, and dual serial interfaces (UART + I²C-compatible) - all mapped to dedicated SFRs and interrupt vectors with priority-level programmability.

Key Specifications

Pinout & Package

The M30281F8HP#U5B is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad, rated for industrial temperature range (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with M30281F8HP#U5B, R5F102AAASP#30 offers superior ultra-low-power operation but sacrifices automotive-grade IEBus support, while M30282F8HP#U5B provides seamless memory expansion within identical footprint and timing constraints.

Availability

M30281F8HP#U5B is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and automotive body electronics requiring stable component supply across multi-year production cycles.

Supply support for M30281F8HP#U5B 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 IoT markets.

The M16C/28 Group was engineered for deterministic real-time control in cost-sensitive embedded systems, emphasizing high peripheral integration, robust debug capability, and industrial temperature resilience without sacrificing code density or interrupt latency.

FAQ

What is the maximum operating frequency of the M30281F8HP#U5B?

The M30281F8HP#U5B supports a maximum CPU clock frequency of 20 MHz, achievable either through direct crystal input (up to 20 MHz) or PLL multiplication of lower-frequency crystals. This frequency enables deterministic execution of real-time control loops with sub-microsecond interrupt latency, critical for motor control and sensor sampling applications using the M30281F8HP#U5B.

Does the M30281F8HP#U5B include an integrated debug interface?

Yes, the M30281F8HP#U5B features an on-chip background debug mode (BDM) interface accessible via a single dedicated pin. This allows full real-time debugging - including breakpoints, register inspection, and memory read/write - without requiring external emulators or additional pins, significantly simplifying development and validation of firmware running on the M30281F8HP#U5B.

What power-saving modes does the M30281F8HP#U5B support?

The M30281F8HP#U5B supports three low-power modes: WAIT (CPU halted, peripherals active), STOP (all clocks stopped except sub-clock), and HALT (deep sleep with RAM retention). In STOP mode, current consumption drops to 1.2 µA at 25°C, enabling long-term battery operation in sensor nodes and remote controls powered by the M30281F8HP#U5B.

Is the M30281F8HP#U5B qualified for automotive applications?

The M30281F8HP#U5B is specified for industrial temperature range (−40°C to +85°C) and includes IEBus interface compliance, making it suitable for non-safety-critical automotive body electronics such as door modules and lighting controllers. However, it is not AEC-Q100 qualified and must not be used in safety-critical or powertrain systems without explicit Renesas approval - a key constraint when designing systems around the M30281F8HP#U5B.

What is the ADC resolution and channel count of the M30281F8HP#U5B?

The M30281F8HP#U5B integrates a 10-bit successive-approximation ADC with 16 selectable input channels, configurable via the ADPC register. Conversion time is 1.7 µs per sample, and hardware triggering from timers or external events ensures precise synchronization - essential for current sensing and closed-loop control tasks executed by the M30281F8HP#U5B.