Renesas M30281F6HP#U9B

Overview

M30281F6HP#U9B from Renesas Electronics is a 16-bit single-chip microcontroller in the M16C/28 Group, designed for embedded control applications requiring integrated peripherals, low-power operation, and real-time responsiveness. It features 64 KB on-chip flash memory, 4 KB RAM, a 16-bit CPU core, 5V operation, and supports up to 20 MHz CPU clock frequency with PLL-based clock generation.

For engineers reviewing the M30281F6HP#U9B datasheet, M30281F6HP#U9B pinout, M30281F6HP#U9B application, or M30281F6HP#U9B equivalent, key selection criteria include its 64-pin QFP package, built-in UART/SIO, 10-bit ADC with 8 channels, watchdog timer, and voltage detection circuit - all critical for industrial motor control, appliance HMI, and sensor interface designs.

Technical Context

The M30281F6HP#U9B implements the M16C/28 architecture with a 16-bit CISC CPU core, supporting both 16-bit and 32-bit arithmetic operations. It integrates a programmable PLL for flexible clock scaling, dual clock sources (main crystal and sub-clock), and multiple power-saving modes including WAIT and STOP with wake-up via external interrupt or internal timer.

Peripheral integration includes two serial I/O units (SIO) configurable as UART or clock-synchronous interfaces, a 10-bit successive-approximation ADC with sample-and-hold, 16-bit multifunction timers with PWM output capability, and an on-chip voltage detection circuit for brown-out protection at 4.2 V ±0.2 V.

Key Specifications

Pinout & Package

Package: 64-pin plastic QFP (14 mm × 14 mm, 0.8 mm pitch), RoHS-compliant, surface-mount compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F21286SNFP#U0 and HD64F2228F20, the M30281F6HP#U9B offers optimal balance of compact 64-pin QFP packaging, integrated PLL clock synthesis, and proven industrial qualification - making it ideal for cost-sensitive, space-constrained embedded controllers where CAN is unnecessary and firmware reuse is prioritized.

Availability

M30281F6HP#U9B is available at Aetrix Electronics and suitable for industrial motor control, home appliance HMI, and factory automation I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for M30281F6HP#U9B 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 the M30281F6HP#U9B, was engineered for cost-effective, real-time embedded control in appliances, industrial equipment, and consumer electronics - emphasizing integration, low-power operation, and ease of firmware development.

FAQ

What is the maximum operating frequency of the M30281F6HP#U9B?

The M30281F6HP#U9B supports a maximum CPU clock frequency of 20 MHz at 5 V supply voltage. This is achieved using the on-chip PLL to multiply the main crystal input (e.g., 5 MHz × 4). The actual achievable frequency depends on stable power delivery and proper decoupling; the M30281F6HP#U9B datasheet specifies timing margins for all peripheral modules at this rate.

Does the M30281F6HP#U9B include an on-chip debug interface?

Yes, the M30281F6HP#U9B supports on-chip debugging via the on-chip debug emulator (OCDE) interface using the dedicated TCK/TDO/TDI/TMS pins. This allows full breakpoint, step-through, and register inspection capabilities without requiring external JTAG hardware - a feature confirmed in the M16C/28 Group Hardware Manual Rev.2.00. The M30281F6HP#U9B OCDE implementation is compatible with Renesas E8/E8a debuggers.

What are the power supply requirements for the M30281F6HP#U9B?

The M30281F6HP#U9B operates from a single 5 V supply with a specified range of 4.5 V to 5.5 V. It requires separate VCC and VSS pins for analog and digital domains, and recommends 0.1 μF ceramic decoupling capacitors placed near each VCC pin. The M30281F6HP#U9B voltage detection circuit triggers reset at 4.2 V ±0.2 V, ensuring reliable operation across industrial voltage tolerances.

Can the M30281F6HP#U9B operate in low-power modes?

Yes, the M30281F6HP#U9B supports WAIT and STOP low-power modes. In WAIT mode, the CPU halts while peripherals remain active; typical current is ~1.5 mA. In STOP mode, both CPU and most peripherals halt, reducing current to ~10 μA. Wake-up is possible via external interrupt, timer overflow, or ADC end-of-conversion - all documented in the M16C/28 Group Hardware Manual for the M30281F6HP#U9B.

Is the M30281F6HP#U9B pin-compatible with other M16C/28 devices?

The M30281F6HP#U9B shares the same 64-pin QFP package and pin assignment with other members of the M16C/28 Group that use the #U9B suffix and identical memory configuration (e.g., M30281F6HP#U9B and M30281F6HP#U9G differ only in mask ROM vs. flash, not pinout). However, pin compatibility is not guaranteed across variants with different pin counts (e.g., 100-pin versions) or differing peripheral sets - always verify against the specific device's pin assignment table in the M30281F6HP#U9B datasheet.