Renesas M30280FCHP#U3B

Overview

M30280FCHP#U3B 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 (with PLL support), supports 3.0–5.5 V supply, and targets industrial control and embedded instrumentation applications.

For engineers reviewing the M30280FCHP#U3B datasheet, M30280FCHP#U3B pinout, M30280FCHP#U3B application, or M30280FCHP#U3B equivalent, key selection considerations include its 100-pin LQFP package, dual-voltage I/O capability (5 V tolerant), hardware multiplier, low-power stop/wait modes, and compatibility with Renesas' M16C development tools and C compiler suite.

Technical Context

The M30280FCHP#U3B implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both 16-bit and 32-bit arithmetic via dedicated hardware multiplier/divider. 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 40 MHz internal clock.

Peripheral integration includes three 16-bit timer arrays (each with capture/compare/PWM functions), 12-channel 10-bit ADC with programmable sampling time, two UART channels with framing error detection, and an I²C-compatible serial interface supporting master/slave mode. Memory protection is enforced via on-chip ROM/RAM write protection bits and interrupt vector table relocation.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad for enhanced thermal dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M30280FCHP#U3B, R5F21285SDFP#V0 offers reduced memory and pin count at lower cost but lacks scalability for feature-rich firmware; RL78/G13 R5F100LEAFP#30 delivers superior energy efficiency and integrated LIN, yet requires full software re-architecture and new qualification effort.

Availability

M30280FCHP#U3B is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and factory automation sensor hub applications requiring stable component supply across extended product lifecycles.

Supply support for M30280FCHP#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 global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The M16C/28 Group, including M30280FCHP#U3B, was designed for deterministic real-time control in resource-constrained industrial equipment where reliability, long-term availability, and mature toolchain support are critical.

FAQ

What is the maximum operating frequency of the M30280FCHP#U3B CPU core?

The M30280FCHP#U3B CPU core operates at up to 20 MHz when driven by the main oscillator, and supports internal PLL multiplication to generate a 40 MHz system clock for peripheral modules. The core's performance is rated at 16 MIPS at 20 MHz, verified under standard 3.0–5.5 V supply conditions per the M16C/28 Hardware Manual Rev.2.00.

Does the M30280FCHP#U3B support in-circuit debugging without external hardware?

Yes, the M30280FCHP#U3B integrates a full on-chip debug circuit compatible with Renesas E8 and E8a emulators. No external JTAG header or debug adapter is required - debug access uses dedicated pins (MD0/MD1) and supports breakpoints, watchpoints, and real-time variable monitoring directly through the Renesas CS+ IDE.

What are the ADC input voltage limits and reference options for the M30280FCHP#U3B?

The M30280FCHP#U3B ADC accepts analog inputs from 0 V to AVCC (typically 3.0–5.5 V), with AVREF pin supporting external reference voltages down to 1.0 V. Internal references include AVCC and a selectable 2.5 V bandgap source. Input channels AN0–AN11 are multiplexed across P20–P27 and P10–P13, with ±1 LSB INL specified across the full operating temperature range.

Is the M30280FCHP#U3B qualified for automotive applications?

No, the M30280FCHP#U3B is classified as a "Standard" quality grade device per Renesas documentation and is intended for industrial, office, and consumer equipment. It is not AEC-Q100 qualified and lacks the extended temperature range, enhanced ESD immunity, and automotive-specific failure mode analysis required for automotive use.

How does the M30280FCHP#U3B handle power supply brown-out conditions?

The M30280FCHP#U3B incorporates an on-chip voltage detection circuit that triggers a reset when VCC drops below a user-selectable threshold (2.7 V, 3.3 V, or 4.0 V). This brown-out reset (BOR) is independent of the external RESET pin and ensures reliable initialization during power ramp-up or transient dips, preventing erratic code execution in the M30280FCHP#U3B.