Renesas M30290FAHP#U3A

Overview

M30290FAHP#U3A 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 HMI subsystems.

For engineers reviewing the M30290FAHP#U3A datasheet, M30290FAHP#U3A pinout, M30290FAHP#U3A application, or M30290FAHP#U3A equivalent, key selection criteria include its 100-pin LQFP package, 3.3 V single-supply operation, 10-bit 16-channel ADC with 1.2 µs conversion time, and support for both on-chip PLL clock multiplication and sub-clock backup for real-time functions.

Technical Context

The M30290FAHP#U3A implements the M16C CPU architecture with 16-bit data bus width, 24-bit address space, and instruction set optimized for deterministic real-time control. It integrates dual watchdog timers (one for main CPU, one for peripheral modules), a voltage detection circuit with programmable threshold, and brown-out reset with hysteresis.

Its clock system supports three independent sources: main crystal oscillator (1–20 MHz), sub-crystal (32.768 kHz), and on-chip RC oscillator (1 MHz). The PLL allows CPU clock generation up to 20 MHz from lower-frequency inputs, while dedicated peripheral clocks (f1, f2, f8, f32, fAD) enable independent timing control for ADC, serial interfaces, and timers.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad (EPAD) connected to VSS for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F102AAASP#30 and MB95560PFT-G-SNE1, the M30290FAHP#U3A provides balanced performance, mature tooling, and proven reliability in cost-sensitive industrial control-especially where sub-clock RTC, deterministic 20 MHz execution, and legacy M16C ecosystem compatibility are essential.

Availability

M30290FAHP#U3A is available at Aetrix Electronics and suitable for motor control systems, industrial power supplies, home appliance HMIs, and factory automation I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for M30290FAHP#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 automotive, industrial, and IoT applications.

The M16C/29 Group was developed for cost-effective, high-reliability embedded control in industrial equipment and consumer appliances-emphasizing real-time responsiveness, mixed-signal integration, and long-lifecycle support.

FAQ

What is the maximum operating frequency of the M30290FAHP#U3A?

The M30290FAHP#U3A supports a maximum CPU clock frequency of 20 MHz, achieved via its on-chip PLL that multiplies input frequencies from the main crystal oscillator (1–20 MHz) or external clock source. This 20 MHz operation is fully supported across the industrial temperature range (−40°C to +85°C) under 3.0–3.6 V supply conditions. The M30290FAHP#U3A datasheet specifies timing parameters-including instruction cycle time, peripheral access latency, and ADC conversion duration-based on this 20 MHz maximum clock rate.

Does the M30290FAHP#U3A support in-circuit debugging?

Yes, the M30290FAHP#U3A includes a dedicated on-chip debug interface compliant with Serial Wire JTAG Debug Port (SWJ-DP), enabling non-intrusive real-time debugging, breakpoint setting, and memory inspection without requiring external emulators. This interface uses a single bidirectional pin (TCK/SWDIO) and supports trace data streaming for program flow analysis. The M30290FAHP#U3A's debug architecture is fully integrated into Renesas' CS+ and e2 studio IDEs, allowing full visibility into CPU registers, SFRs, and memory during active execution.

What are the power supply requirements for the M30290FAHP#U3A?

The M30290FAHP#U3A operates from a single 3.0 V to 3.6 V supply, with separate VCC and VSS pins distributed across all four sides of the 100-pin LQFP package to minimize noise coupling and ensure stable decoupling. It requires 100 nF ceramic capacitors placed within 5 mm of each VCC–VSS pair, plus a bulk 4.7 µF tantalum capacitor near the power entry point. The M30290FAHP#U3A's internal voltage regulator and brown-out detection circuit monitor supply integrity down to 2.7 V, triggering reset if voltage drops below the programmable threshold.

How many analog-to-digital converter channels does the M30290FAHP#U3A have?

The M30290FAHP#U3A integrates a 10-bit successive-approximation ADC with 16 selectable input channels (AD0–AD15), supporting simultaneous sampling of up to two channels via dual-sample-and-hold circuits. Conversion time is fixed at 1.2 µs per channel, and the ADC includes built-in offset calibration, scan mode sequencing, and interrupt-on-conversion capability. All 16 channels are accessible through dedicated pins on the M30290FAHP#U3A's 100-pin LQFP package, with no multiplexing required for basic operation.

Is the M30290FAHP#U3A pin-compatible with other M16C/29 Group devices?

The M30290FAHP#U3A shares the same 100-pin LQFP package and pin assignment as other members of the M16C/29 Group with identical pin count (e.g., M30290FSP#U3A, M30290FHP#U3A), enabling drop-in replacement where flash size, RAM, or peripheral configuration differences do not impact functionality. Pin compatibility is confirmed in the M16C/29 Group Hardware Manual Rev.1.12, Section 1.4 (Pin Assignments). However, firmware must be verified for register-level differences-particularly in SFR initialization sequences-before substituting the M30290FAHP#U3A into designs originally targeting variants with different memory maps or peripheral enable defaults.