Renesas M30281F6HP#U3B

Overview

M30281F6HP#U3B 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 frequency with 3.0–5.5 V supply range and supports industrial temperature operation (−40°C to +85°C). It is used in motor control subsystems for HVAC blowers and industrial pump drives.

For engineers reviewing the M30281F6HP#U3B datasheet, M30281F6HP#U3B pinout, M30281F6HP#U3B application, or M30281F6HP#U3B equivalent, key selection criteria include its 64 KB flash size, 10-bit ADC resolution with 8-channel input, UART/SIO dual serial capability, and support for WAIT/STOP low-power modes - all verified in the official M16C/28 Group Hardware Manual Rev.2.00 (2007).

Technical Context

The M30281F6HP#U3B 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 oscillator (1–20 MHz), sub-oscillator (32.768 kHz), on-chip oscillator (1 MHz), and PLL for internal clock multiplication.

Peripheral integration includes three 16-bit timer/counters (one with PWM output), one watchdog timer, voltage detection circuit with reset/interrupt capability, and interrupt controller supporting 128 vectors. Memory protection is enforced via ROM/RAM write-protection bits and reserved address access prohibition.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 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 R5F102BAASP#V0 and HD64F3687FPV, the M30281F6HP#U3B delivers optimal balance of deterministic 20 MHz execution, integrated debug, and industrial-grade ADC/timer peripherals - making it the preferred choice for cost-sensitive, medium-complexity motor and power control designs where Renesas M16C toolchain familiarity exists.

Availability

M30281F6HP#U3B is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node development, and programmable logic controller I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for M30281F6HP#U3B 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 Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.

The M16C/28 Group, including M30281F6HP#U3B, was designed for cost-effective, real-time embedded control in industrial equipment - emphasizing deterministic timing, on-chip peripheral integration, and robustness in electrically noisy environments.

FAQ

What is the maximum operating frequency of the M30281F6HP#U3B?

The M30281F6HP#U3B supports a maximum CPU clock frequency of 20 MHz, achieved via its on-chip PLL circuit multiplying the input from an external 1–20 MHz crystal oscillator. This frequency is fully supported across the full −40°C to +85°C industrial temperature range and enables precise 50 ns instruction cycle timing for time-critical motor control tasks. The M30281F6HP#U3B datasheet specifies this limit under "Electrical Characteristics" with guaranteed timing margins.

Does the M30281F6HP#U3B include an on-chip debug interface?

Yes, the M30281F6HP#U3B integrates a single-wire background debug mode (BDM) interface compliant with Renesas' standard debug protocol. This allows full read/write access to registers and memory, breakpoint insertion, and real-time variable monitoring without halting peripheral operation. The M30281F6HP#U3B uses dedicated pins P10 (BKGD) and VSS for debug connection, eliminating need for JTAG header space.

What ADC capabilities does the M30281F6HP#U3B provide?

The M30281F6HP#U3B features a 10-bit successive approximation ADC with 8 input channels (AN0–AN7), conversion time of 1.2 µs per sample, and ±1 LSB integral nonlinearity. It supports software/start-triggered conversion, continuous scan mode, and result alignment options. These specifications are confirmed in the M16C/28 Group Hardware Manual Rev.2.00 and make the M30281F6HP#U3B suitable for current sensing and voltage monitoring in motor drives.

Is the M30281F6HP#U3B qualified for automotive applications?

No, the M30281F6HP#U3B is classified by Renesas as a "Standard" quality grade device intended for industrial applications such as machine tools, office equipment, and industrial robots - not for automotive use. It lacks AEC-Q100 qualification, extended temperature range (−40°C to +125°C), and automotive-specific failure-in-time (FIT) metrics. For automotive designs, Renesas recommends RL78/F1x or RH850 families instead of the M30281F6HP#U3B.

What package type is used for the M30281F6HP#U3B?

The M30281F6HP#U3B is supplied in a 64-pin LQFP package measuring 10 mm × 10 mm with 0.5 mm lead pitch. This RoHS-compliant package features exposed thermal pad for enhanced heat dissipation in motor control applications and is compatible with standard surface-mount reflow profiles. Pin assignments and mechanical dimensions are documented in Section 1.4 ("Pin Assignment") of the M16C/28 Group Hardware Manual for the M30281F6HP#U3B.