Renesas M30291FCHP#U9A

Overview

M30291FCHP#U9A from Renesas Electronics is a 16-bit CMOS microcontroller in the M16C/29 Group, designed for embedded control in industrial and consumer systems. It features 256 KB on-chip flash memory, 16 KB RAM, a 16-bit CPU core operating at up to 20 MHz, and integrated peripherals including UART, I²C, 16-bit timer arrays, and 10-bit ADC. It targets motor control, power supply management, and appliance control applications.

For engineers reviewing the M30291FCHP#U9A datasheet, M30291FCHP#U9A pinout, M30291FCHP#U9A application, or M30291FCHP#U9A equivalent, key selection criteria include its 100-pin LQFP package, 3.3 V operation, 10-bit 16-channel ADC resolution, dual CAN interface support (CAN 2.0B), and built-in voltage detection circuit with brown-out reset capability.

Technical Context

The M30291FCHP#U9A implements the M16C CPU architecture with 16-bit data bus and 24-bit address space, supporting both single-cycle and multi-cycle instruction execution. It integrates two independent CAN controllers compliant with ISO 11898-1:2003, each with 32 message objects and programmable bit timing.

Its clock system includes main clock (1–20 MHz crystal), sub-clock (32.768 kHz), on-chip oscillator (1 MHz), and PLL for CPU clock multiplication. The device supports three low-power modes-Wait, Stop, and Deep Stop-with wake-up via external interrupt, RTC alarm, or serial receive event.

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 R5F102MAASP#30 and MB9BF506RPMC-G-SNE2, the M30291FCHP#U9A offers unique dual-CAN + IEBus integration in a mature 16-bit platform, making it optimal for cost-constrained industrial gateways where legacy bus compatibility and deterministic real-time behavior are prioritized over raw compute power or lowest quiescent current.

Availability

M30291FCHP#U9A is available at Aetrix Electronics and suitable for industrial motor control, smart power supply design, and home appliance development requiring stable component supply and long-term lifecycle assurance.

Supply support for M30291FCHP#U9A 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/29 Group was engineered for deterministic real-time control in resource-constrained embedded systems, emphasizing peripheral integration, robustness in noisy environments, and long-lifecycle support for industrial automation and white goods.

FAQ

What is the maximum operating frequency of the M30291FCHP#U9A CPU core?

The M30291FCHP#U9A CPU core operates at a maximum frequency of 20 MHz. This is achieved using the on-chip PLL to multiply the input crystal frequency, enabling consistent 16-MIPS performance. The M30291FCHP#U9A maintains timing integrity across its full operating voltage range (3.0 V to 3.6 V) and temperature range (−40°C to +85°C), with all peripheral clocks derived synchronously from the same source to avoid skew-related errors.

Does the M30291FCHP#U9A support CAN FD or only classical CAN 2.0B?

The M30291FCHP#U9A supports only classical CAN 2.0B (ISO 11898-1:2003), not CAN FD. Its dual CAN controllers each implement 32 message objects with programmable acceptance filtering, bit timing configuration, and error counters-but lack the variable data length, flexible bit rate switching, or CRC enhancements defined in CAN FD. The M30291FCHP#U9A remains fully interoperable with legacy CAN networks operating up to 1 Mbps.

Is the M30291FCHP#U9A pin-compatible with other members of the M16C/29 Group?

Yes, the M30291FCHP#U9A is pin-compatible with other 100-pin LQFP variants in the M16C/29 Group, including M30291FCHP#U5A and M30291FCHP#U7A. Differences between these variants relate solely to memory size (flash/RAM), factory-programmed options, and minor peripheral enablement-while sharing identical pin assignments, electrical characteristics, and register maps. This allows hardware reuse across product tiers.

What debug interface does the M30291FCHP#U9A provide?

The M30291FCHP#U9A supports on-chip debugging via the single-wire MON interface (pin 99), compatible with Renesas E8/E8a emulators and modern CS+ IDE. It enables full breakpoint control, register inspection, memory read/write, and real-time trace without requiring dedicated JTAG pins. The M30291FCHP#U9A also supports ROM-based bootloader operation for field firmware updates via UART or CAN.

Does the M30291FCHP#U9A include hardware encryption or secure boot features?

The M30291FCHP#U9A does not include dedicated hardware encryption accelerators (e.g., AES, SHA) or certified secure boot logic. However, it provides flash memory security via lock bits that prevent unauthorized read-out or reprogramming, and supports software-implemented cryptographic functions using its 16-bit MAC unit and fast interrupt response. The M30291FCHP#U9A is classified as "Standard" quality grade and is not intended for life-critical security applications without additional external safeguards.