Renesas M30281F6HP#U7B

Overview

M30281F6HP#U7B from Renesas Electronics is a 16-bit single-chip microcontroller in the M16C/28 Group, featuring 64 KB on-chip flash memory, 4 KB RAM, and integrated peripherals including UART, I²C-compatible serial interface, 16-bit timer/counters, and 10-bit ADC. It operates at up to 20 MHz CPU clock and supports industrial temperature range (−40°C to +85°C) with 5 V supply voltage. It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the M30281F6HP#U7B datasheet, M30281F6HP#U7B pinout, M30281F6HP#U7B application, or M30281F6HP#U7B equivalent, key selection criteria include flash endurance (10,000 write/erase cycles), on-chip debug support via JTAG interface, and compatibility with Renesas' M16C development toolchain (HEW, Flash Starter).

Technical Context

The M30281F6HP#U7B implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both CISC instruction set and bit-manipulation instructions for real-time control. Its clock system integrates main crystal oscillator (1–20 MHz), sub-oscillator (32.768 kHz), on-chip RC oscillator, and PLL for flexible frequency synthesis up to 20 MHz.

Peripheral integration includes three 16-bit timer/counters with PWM output capability, one 10-bit 8-channel ADC with conversion time of 1.2 μs, and dual serial interfaces (UART and CSI) supporting asynchronous and synchronous communication. Reset management features hardware reset, watchdog timer reset, oscillation stop detection, and low-voltage detection interrupt.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, standard JEDEC MO-220 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F102BAANA#U0 and M30282F8HP#U7B, the M30281F6HP#U7B delivers optimal balance of deterministic real-time performance, industrial voltage tolerance, and proven ecosystem support-making it preferred for cost-sensitive, 5 V-based motor and PLC applications where flash size ≤64 KB suffices.

Availability

M30281F6HP#U7B is available at Aetrix Electronics and suitable for industrial motor control, smart metering, and programmable logic controller applications requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for M30281F6HP#U7B 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 automotive, industrial, and IoT markets.

The M16C/28 Group-including the M30281F6HP#U7B-is designed for cost-effective, real-time embedded control in industrial automation, motor drives, and instrumentation where deterministic timing, 5 V robustness, and mature toolchain support are critical.

FAQ

What is the maximum operating frequency of the M30281F6HP#U7B?

The M30281F6HP#U7B supports a maximum CPU clock frequency of 20 MHz, achievable via its on-chip PLL when driven by a 4 MHz main crystal. This frequency is fully rated across the industrial temperature range (−40°C to +85°C) and 4.5–5.5 V supply, enabling deterministic execution of real-time control loops with sub-microsecond interrupt latency. The M30281F6HP#U7B's timing specifications guarantee setup/hold margins under worst-case conditions.

Does the M30281F6HP#U7B support in-system programming (ISP)?

Yes, the M30281F6HP#U7B supports in-system programming via its on-chip boot ROM and UART interface using Renesas' Flash Starter utility. This allows firmware updates without removing the device from the PCB. The M30281F6HP#U7B requires no external high-voltage programming signal-only standard 5 V supply and UART connection-and retains user code during reset sequences, ensuring safe field upgrades.

What debug interfaces does the M30281F6HP#U7B provide?

The M30281F6HP#U7B provides a full IEEE 1149.1-compliant JTAG interface (TCK/TDO/TDI/TMS) for real-time debugging, flash programming, and boundary scan testing. It does not support SWD or single-wire debug. The M30281F6HP#U7B's JTAG implementation supports halt/resume, register read/write, memory access, and hardware breakpoints-fully compatible with Renesas E8/E8a emulators and HEW IDE.

Is the M30281F6HP#U7B qualified for automotive applications?

No, the M30281F6HP#U7B is classified as a Standard quality grade device per Renesas documentation and is intended for industrial, office, and consumer applications-not automotive or safety-critical systems. It lacks AEC-Q100 qualification, extended temperature screening, or automotive-specific failure mode analysis. For automotive use, Renesas recommends RH850 or RL78/F1x families instead of the M30281F6HP#U7B.

What is the ADC resolution and conversion time of the M30281F6HP#U7B?

The M30281F6HP#U7B integrates a 10-bit successive approximation ADC with 8 selectable input channels. Its typical conversion time is 1.2 μs per sample at maximum clock rate, with built-in sample-and-hold for accurate acquisition of fast transient signals. The M30281F6HP#U7B's ADC supports software start, timer-triggered start, and continuous conversion modes-all configurable via dedicated SFRs without CPU intervention.