Renesas M30291FCTHP#U7A

Overview

M30291FCTHP#U7A from Renesas Electronics is a 16-bit CMOS microcontroller in the M16C/29 Group, designed for embedded control applications requiring integrated peripherals, low-power operation, and industrial-grade reliability. It features 256 KB on-chip flash memory, 16 KB RAM, a 16-bit CPU core operating at up to 20 MHz, and supports CAN 2.0B communication. It is used in motor control systems, industrial PLC modules, and sensor-based automation equipment.

For engineers reviewing the M30291FCTHP#U7A datasheet, M30291FCTHP#U7A pinout, M30291FCTHP#U7A application, or M30291FCTHP#U7A equivalent, key selection considerations include its 100-pin LQFP package, CAN controller with 32 message objects, 12-bit ADC with 16 channels, dual watchdog timers, and support for both main and sub-clock oscillators with PLL frequency multiplication.

Technical Context

The M30291FCTHP#U7A implements the M16C CPU architecture with 16-bit data bus width, 24-bit address space, and instruction set optimized for real-time control. It integrates a programmable CAN controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps and automatic retransmission.

Its clock system includes independent main (1–20 MHz) and sub (32.768 kHz) crystal inputs, on-chip oscillator, and PLL for generating internal CPU clocks up to 20 MHz. Power management supports Normal, Wait, and Stop modes with wake-up via external interrupt or RTC alarm.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with M30291FCTHP#U7A, R5F102AAASP#V0 offers lower power and smaller footprint but lacks CAN and reduces memory capacity by 87%, while MB9BF506RPMC-G-SNE2 delivers scalable performance and CAN FD readiness at the cost of increased design complexity and BOM cost.

Availability

M30291FCTHP#U7A is available at Aetrix Electronics and suitable for industrial motor control, building automation, and energy metering applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for M30291FCTHP#U7A 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 targets cost-effective, high-reliability embedded control in industrial equipment, where deterministic real-time response, integrated CAN, and robust flash endurance are critical design requirements.

FAQ

What is the maximum operating frequency of the M30291FCTHP#U7A?

The M30291FCTHP#U7A operates at a maximum CPU clock frequency of 20 MHz, achieved using the on-chip PLL with a 1–20 MHz main crystal input. This frequency is guaranteed across the full −40°C to +85°C temperature range and 2.7 V to 5.5 V supply voltage, with timing margins verified per the M16C/29 Group Hardware Manual Rev.1.12.

Does the M30291FCTHP#U7A include an integrated CAN transceiver?

No, the M30291FCTHP#U7A integrates only the CAN protocol controller (CAN 2.0B compliant), not the physical layer transceiver. External CAN transceivers such as the SN65HVD230 or TJA1050 must be used on the CANH/CANL pins to interface with the bus. The controller supports 32 message objects and automatic retransmission, but level-shifting and bus termination remain external responsibilities.

What debug interface does the M30291FCTHP#U7A support?

The M30291FCTHP#U7A supports on-chip debugging via the single-wire debug (SWD) interface using the dedicated DBG pin. It is compatible with Renesas E1/E20 emulators and allows full breakpoint, watchpoint, and memory inspection capabilities without halting real-time peripheral operation-critical for validating CAN message timing and ADC sampling synchronization in the M30291FCTHP#U7A.

Is the M30291FCTHP#U7A qualified for automotive applications?

No, the M30291FCTHP#U7A is rated for industrial applications only (Standard quality grade per Renesas documentation). It is not AEC-Q100 qualified, lacks automotive-specific qualification testing, and does not support extended temperature ranges beyond −40°C to +85°C. For automotive use, Renesas recommends the RH850/F1K or RL78/F14 families instead of the M30291FCTHP#U7A.

How is flash memory programmed on the M30291FCTHP#U7A?

Flash programming on the M30291FCTHP#U7A is performed via the on-chip serial programming interface using UART or CAN, supporting in-application programming (IAP). The process requires unlocking protected sectors, erasing pages (1 KB each), and writing 128-byte blocks with checksum verification. No external high-voltage programmer is needed, and the M30291FCTHP#U7A retains full execution capability during non-active bank writes.