Renesas M30281FAVHP#U3A

Overview

M30281FAVHP#U3A from Renesas Electronics is a 16-bit CMOS microcontroller in the M16C/28 Group (V-version), featuring 256 KB on-chip flash memory, 16 KB RAM, and operating at up to 20 MHz CPU clock frequency. It integrates UART, I²C, CAN 2.0B controller, 10-bit ADC (16 channels), and 16-bit timer arrays for real-time industrial control applications.

For engineers reviewing the M30281FAVHP#U3A datasheet, M30281FAVHP#U3A pinout, M30281FAVHP#U3A application, or M30281FAVHP#U3A equivalent, key selection criteria include its V-version silicon revision, 100-pin LQFP package, CAN interface compliance with ISO 11898-1, flash endurance of 10,000 write/erase cycles, and support for single-cycle instruction execution on core arithmetic operations.

Technical Context

The M30281FAVHP#U3A implements the M16C CPU core with 16-bit data bus and 24-bit address space, supporting both T- and V-version instruction sets but specifically configured as a V-version device with enhanced peripheral clock gating and updated oscillator stop detection logic. Its on-chip debug interface supports full-speed background debugging via dedicated pins without halting real-time operation.

It features dual clock domains: main clock (1–20 MHz crystal or external input) and sub-clock (32.768 kHz) for RTC and low-power modes. The integrated PLL allows multiplication of main clock up to 4×, enabling flexible CPU/peripheral clock ratio configuration while maintaining CAN timing accuracy per ISO 11898-1 sampling point requirements.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EPAD) connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M30281FAVHP#U3A, R5F21282SDFP#30 offers higher RAM and longer manufacturer support, while MB90F387GPF-G-SAMPLE provides architectural continuity for Fujitsu FR users-but neither is pin- or code-compatible without significant adaptation.

Availability

M30281FAVHP#U3A is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and energy metering applications requiring stable component supply across extended production lifecycles.

Supply support for M30281FAVHP#U3A 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 designed for cost-sensitive, real-time embedded control applications demanding high reliability, integrated peripherals, and long-term availability-particularly in factory automation and automotive subsystems.

FAQ

What is the maximum operating temperature range for the M30281FAVHP#U3A?

The M30281FAVHP#U3A is rated for operation from −40°C to +105°C ambient temperature, qualified under Renesas' "High Quality" grade for use in automotive body electronics and industrial control environments. This rating is confirmed in the M16C/28 Group Hardware Manual Rev.1.10 and applies specifically to the V-version silicon used in M30281FAVHP#U3A. Thermal derating is not required within this range when mounted per JEDEC MO-137AC guidelines.

Does the M30281FAVHP#U3A support CAN FD or only classical CAN 2.0B?

The M30281FAVHP#U3A supports only CAN 2.0B protocol (ISO 11898-1), with bit rates up to 1 Mbps and full message object management. It does not implement CAN FD features such as flexible data-rate switching, extended data length, or CRC separation. The CAN controller is hardware-validated for classical CAN timing accuracy and error confinement, as documented in the M16C/28 Group Hardware Manual section 12.3.

Is the M30281FAVHP#U3A pin-compatible with other M16C/28 Group devices like M30281FAXHP#U3A?

No-the M30281FAVHP#U3A is not pin-compatible with M30281FAXHP#U3A. While both use 100-pin LQFP packages, the 'V' and 'X' suffixes denote different silicon versions with distinct pin functions: V-version assigns CANH/CANL to pins 79/80, whereas X-version routes them to pins 83/84. This difference is explicitly documented in the Pin Configuration table (Section 1.4) of the M16C/28 Group Hardware Manual Rev.1.10.

What debug interface does the M30281FAVHP#U3A provide, and what tools are compatible?

The M30281FAVHP#U3A includes Renesas' on-chip debug interface (OCD) with dedicated DBGCLK/DBGRQ/DBGD pins supporting full-speed background debugging. It is compatible with Renesas E8a and E1 emulators, and works with CS+ (CubeSuite+) IDE for breakpoint setting, register inspection, and flash programming. Debug functionality remains active during Wait and Stop modes, enabling low-power system validation without halting real-time operation.

How many erase/write cycles does the on-chip flash memory of the M30281FAVHP#U3A support?

The on-chip flash memory in the M30281FAVHP#U3A supports 10,000 erase/write cycles per block, as specified in the M16C/28 Group Hardware Manual Rev.1.10 Section 3.2. This endurance applies to the standard 128-byte block erase operation; wear leveling must be implemented in firmware for applications requiring frequent updates. Data retention is guaranteed for 20 years at +85°C ambient, verified per JEDEC JESD22-A117 stress testing.