Renesas M30291FAHP#U5A

Overview

M30291FAHP#U5A from Renesas Electronics is a 16-bit CMOS microcontroller in the M16C/29 Group, designed for embedded control in industrial and consumer systems. It integrates 256 KB flash memory, 16 KB RAM, a 16-bit CPU core, on-chip PLL clock generator, and peripheral functions including UART, I²C-compatible serial interface, 10-bit ADC, and 16-bit timer arrays. It operates at up to 20 MHz with supply voltage of 2.7–5.5 V.

For engineers reviewing the M30291FAHP#U5A datasheet, M30291FAHP#U5A pinout, M30291FAHP#U5A application, or M30291FAHP#U5A equivalent, key selection considerations include its 100-pin LQFP package, 256 KB flash endurance (10,000 write/erase cycles), integrated voltage detection circuit, brown-out reset capability, and support for WAIT/STOP low-power modes in resource-constrained control applications.

Technical Context

The M30291FAHP#U5A implements the M16C CPU architecture with 16-bit data bus and 24-bit address space, supporting both 16-bit and 32-bit arithmetic operations. Its clock system includes main crystal oscillator (1–20 MHz), sub-oscillator (32.768 kHz), on-chip RC oscillator, and PLL multiplier enabling CPU clock up to 20 MHz from lower-frequency inputs.

Peripheral integration includes three 16-bit timer units (TMR0–TMR2) with capture/compare/PWM output, one 8-bit reload timer (TMR8), dual UART channels with framing error detection, and a 10-bit, 16-channel successive-approximation ADC with conversion time of 1.7 µs per channel. All peripherals are memory-mapped via SFRs and support interrupt-driven operation.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, plastic body with exposed thermal pad.

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 M30291FAHP#U5A offers superior flash density and mature peripheral integration for cost-sensitive, non-networked control tasks - especially where legacy M16C software reuse and 20 MHz real-time determinism are critical.

Availability

M30291FAHP#U5A is available at Aetrix Electronics and suitable for industrial motor control, smart metering, home appliance control, and factory automation I/O modules requiring stable component supply across multi-year production cycles.

Supply support for M30291FAHP#U5A 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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The M16C/29 Group - including the M30291FAHP#U5A - was engineered for cost-effective, high-reliability embedded control in appliances, industrial equipment, and metering, emphasizing flash longevity, robust reset architecture, and mixed-signal integration.

FAQ

What is the maximum operating frequency of the M30291FAHP#U5A?

The M30291FAHP#U5A supports a maximum CPU clock frequency of 20 MHz, achieved using its on-chip PLL to multiply lower-frequency crystal inputs (e.g., 4 MHz × 5). This frequency is sustained across the full 2.7–5.5 V supply range and commercial temperature grade (−20°C to +75°C), enabling deterministic real-time execution for motor control and metering applications. The M30291FAHP#U5A's timing specifications are validated under these conditions per Renesas Hardware Manual Rev.1.12.

Does the M30291FAHP#U5A support in-circuit debugging?

Yes, the M30291FAHP#U5A supports on-chip debugging via the single-wire debug interface (SWD) using Renesas E1/E20 emulators. It includes hardware breakpoints, watchpoints, and real-time trace buffer access through the on-chip debug module. Debug functionality remains fully operational during WAIT and STOP modes, allowing low-power validation. The M30291FAHP#U5A requires no external debug header - all signals are multiplexed on standard GPIO pins per the pin assignment table.

What is the flash endurance specification for the M30291FAHP#U5A?

The M30291FAHP#U5A guarantees 10,000 write/erase cycles for its 256 KB on-chip flash memory, with data retention exceeding 10 years at +85°C. This endurance rating applies to all sectors, including the boot area, and is verified per JEDEC JESD22-A117. Wear-leveling must be implemented in firmware for applications requiring frequent updates; the M30291FAHP#U5A does not include hardware wear-leveling logic.

Can the M30291FAHP#U5A operate from a 3.3 V supply?

Yes, the M30291FAHP#U5A operates reliably across 2.7 V to 5.5 V, making it compatible with standard 3.3 V systems without level-shifting. At 3.3 V, it maintains full 20 MHz operation and all peripheral functions, including ADC accuracy (±2 LSB INL) and UART baud rate tolerance (±2%). The M30291FAHP#U5A's I/O pins are 5 V tolerant when configured as inputs, simplifying interface with legacy 5 V peripherals.

Is the M30291FAHP#U5A qualified for automotive applications?

No, the M30291FAHP#U5A is rated for Standard quality grade per Renesas classification and is intended for industrial, consumer, and office equipment - not automotive or safety-critical systems. It lacks AEC-Q100 qualification, extended temperature range (−40°C to +125°C), and automotive-specific failure-in-time (FIT) data. For automotive use, Renesas recommends the RL78/F1x or RH850 families; the M30291FAHP#U5A is not approved for transportation equipment per Renesas Notice #7.