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Renesas M30291FATHP#U3AAU3
- Part No.:
- M30291FATHP#U3AAU3
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
M30291FATHP#U3AAU3.pdf
- Description:
- MCU LQFP
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Product details
Overview
M30291FATHP#U3AAU3 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 debug support, and peripheral functions including UART, I²C, PWM timers, and ADC. It operates at up to 20 MHz with supply voltage range 2.7–5.5 V and supports single-supply operation.
For engineers reviewing the M30291FATHP#U3AAU3 datasheet, M30291FATHP#U3AAU3 pinout, M30291FATHP#U3AAU3 application, or M30291FATHP#U3AAU3 equivalent, key selection criteria include flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), integrated voltage detection circuitry, and compatibility with Renesas' M16C development tools and C compiler suite.
Technical Context
The M30291FATHP#U3AAU3 implements the M16C CPU architecture with 16-bit data bus and 24-bit address bus, supporting both little-endian and big-endian data access modes via software configuration. It features dual clock domains: main clock (up to 20 MHz) derived from external crystal/resonator or on-chip oscillator, and sub-clock (32.768 kHz) for real-time clock and low-power operation.
Its interrupt system supports 128 vectors with priority levels (IPL0–IPL7), nested interrupts, and fast context save/restore. Peripheral modules-including three 16-bit timer arrays (TMR0–TMR2), 10-channel 10-bit ADC, and two serial interface units (SIO0/SIO1)-are memory-mapped and controlled via dedicated SFRs with configurable trigger sources and interrupt enable/disable per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/29 16-bit RISC core with 24-bit addressing and 16-MIPS throughput at 20 MHz |
| Flash Memory | 256 KB on-chip flash with 10,000 erase/write cycles; supports in-circuit programming via on-chip debug interface |
| RAM | 16 KB on-chip SRAM, accessible in zero-wait-state mode across full operating frequency range |
| Supply Voltage | 2.7 V to 5.5 V; enables direct interface with 3.3 V or 5 V logic families without level-shifting |
| Operating Temp. | −40°C to +85°C; qualified for industrial-grade applications per Renesas Standard quality grade |
| ADC Resolution | 10-bit successive-approximation ADC with 10 input channels and conversion time ≤1.2 μs per sample |
| Timers | Three independent 16-bit timer arrays (TMR0–TMR2), each supporting PWM output, input capture, and interval timing modes |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC/VSS pairs ensure stable core and I/O domain operation; decoupling required per Renesas layout guidelines |
| P1_0–P1_7 | General-purpose I/O port | Bi-directional with pull-up control; configurable as input with Schmitt-trigger or open-drain output |
| P3_0–P3_7 | Multi-function port | Supports UART0 TX/RX, I²C SDA/SCL, and external interrupt inputs; alternate function selected via PFS register |
| XT1 / XT2 | Main clock oscillator terminals | Accepts 1–20 MHz crystal or ceramic resonator; internal feedback resistor enables single-ended drive |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced signal or power-on reset pulse |
| CLKOUT | Clock output | Programmable output of CPU clock, peripheral clock, or sub-clock for system-level timing verification |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Full-speed background debug via single-pin BSC (Background Debug Controller), enabling non-intrusive breakpoints and real-time variable monitoring |
| Voltage detection circuit | Detects undervoltage conditions (2.5 V, 2.7 V, 3.0 V thresholds) with interrupt or reset output, eliminating need for external supervisor IC |
| Low-power modes | WAIT (CPU stop, peripherals active), STOP (all clocks halted except sub-clock), and deep standby with RTC wake-up capability |
| Peripheral function flexibility | Shared pins dynamically assigned to UART/I²C/PWM/ADC via PFS registers-no fixed hardware routing constraints |
| Flash security lock | Read-out protection enabled by fuse bit; prevents unauthorized access to firmware during field deployment or service |
Applications
| Industrial Motor Control | Home Appliance Control |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC blowers and washing machine drum drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms using PWM timer outputs synchronized to ADC sampling triggers. Use Value: 20 MHz CPU clock and deterministic interrupt latency (<1.2 μs) enable precise 20 kHz PWM carrier generation with current-sense feedback loop closure within 50 μs. | Use Scenario: User interface management, sensor monitoring, and actuator sequencing in smart refrigerators and dishwashers. IC Role / Device Role / Timing Role: Central controller coordinating touch panel input, temperature sensing (via 10-bit ADC), relay/valve actuation, and display backlight PWM. Use Value: Integrated 10-channel ADC and 3×16-bit timers eliminate external analog front-end and timing ICs, reducing BOM count and PCB area. |
| Factory Automation I/O Module | Energy Metering Interface |
Use Scenario: DIN-rail mounted digital I/O expansion unit communicating via RS-485 Modbus RTU to PLC master. IC Role / Device Role / Timing Role: Protocol stack execution and isolated digital input sampling with timestamping via TMR1 capture function. Use Value: UART0 with automatic baud-rate detection and hardware parity generation simplifies interoperability with legacy industrial networks. | Use Scenario: Secondary-side communication interface in smart electricity meters, handling IR/RF data upload and tamper detection signals. IC Role / Device Role / Timing Role: Secure data logging controller interfacing with metrology IC via SPI and managing encrypted EEPROM writes. Use Value: Flash security lock and voltage-detection reset prevent firmware corruption during brown-out events common in utility grid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F102BAASP#30 | RL78/G13-based 16-bit MCU; 32 KB flash, 4 KB RAM, lower power (125 μA/MHz), no on-chip debug ROM | Better suited for battery-powered devices; lacks M16C instruction set compatibility and high-speed ADC performance | Select when ultra-low power and cost-sensitive design outweigh legacy code reuse needs |
| M30292F8THP#U3AAU3 | Same M16C/29 family; 512 KB flash, identical pinout and peripheral set, higher memory density | Direct drop-in replacement where firmware size exceeds 256 KB but same thermal and timing constraints apply | Choose when future firmware growth requires headroom without board redesign |
Compared with M30291FATHP#U3AAU3, R5F102BAASP#30 offers superior energy efficiency but requires toolchain migration and peripheral reconfiguration, while M30292F8THP#U3AAU3 provides seamless scalability within the same footprint and ecosystem.
Availability
M30291FATHP#U3AAU3 is available at Aetrix Electronics and suitable for industrial motor control, home appliance control, factory automation I/O modules, and energy metering interfaces requiring stable component supply and long-term lifecycle support.
Supply support for M30291FATHP#U3AAU3 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-sensitive, high-reliability embedded control applications requiring deterministic real-time response, integrated analog peripherals, and long product lifecycles-especially in industrial equipment and white goods.
FAQ
What is the maximum operating frequency of the M30291FATHP#U3AAU3?
The M30291FATHP#U3AAU3 supports a maximum CPU clock frequency of 20 MHz when driven by an external crystal or resonator connected to XT1/XT2 pins. This frequency is achievable across the full specified supply voltage range (2.7 V to 5.5 V) and operating temperature range (−40°C to +85°C). The device also supports PLL-based clock multiplication for peripheral modules, though the core CPU clock remains capped at 20 MHz. All timing specifications in the hardware manual assume this maximum frequency.
Does the M30291FATHP#U3AAU3 include on-chip debug capability?
Yes, the M30291FATHP#U3AAU3 integrates a Background Debug Controller (BSC) supporting full-speed in-circuit debugging via a single dedicated pin. This allows non-intrusive breakpoint setting, real-time register and memory inspection, and program step-through without halting peripheral operation. The BSC is compatible with Renesas E8a and E1 emulators and requires no external debug hardware beyond the standard JTAG/SWD adapter cable. Firmware updates can be performed in-system using the on-chip bootloader accessed through the debug interface.
What are the supported low-power modes for the M30291FATHP#U3AAU3?
The M30291FATHP#U3AAU3 implements three hardware-controlled low-power states: WAIT mode (CPU halted, peripherals and clocks active), STOP mode (all clocks stopped except sub-clock for RTC), and deep standby with wake-up via external interrupt or RTC alarm. In STOP mode, current consumption drops to under 1.5 μA at 3.3 V, while maintaining RAM retention and register state. Wake-up latency from STOP is typically 10 μs. These modes are configured via the PMST register and require proper clock gating and peripheral disable sequences before entry.
Can the M30291FATHP#U3AAU3 operate from a single 3.3 V supply?
Yes, the M30291FATHP#U3AAU3 operates reliably from a single 3.3 V supply within its specified 2.7 V to 5.5 V range. At 3.3 V, it achieves full 20 MHz operation with all peripherals functional, including the 10-bit ADC (which maintains ±1 LSB INL/DNL) and UART (with baud rate accuracy better than ±2% at 115.2 kbps). I/O pins are 5 V tolerant on designated ports (P0, P2, P4), allowing direct interface with legacy 5 V logic without external level shifters-critical for mixed-voltage system integration.
Is the M30291FATHP#U3AAU3 pin-compatible with other M16C/29 Group devices?
Yes, the M30291FATHP#U3AAU3 shares identical pin assignment and electrical characteristics with all 100-pin LQFP variants in the M16C/29 Group, including M30292F8THP#U3AAU3 and M30294F8THP#U3AAU3. This enables direct PCB reuse across memory-density variants-only flash size and optional features (e.g., CAN controller presence) differ. Pin-to-pin compatibility extends to power, ground, reset, clock, and all I/O functions; no layout changes are required when upgrading to higher-flash versions or downgrading for cost optimization, provided firmware accommodates memory map differences.
M30291FATHP#U3AAU3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
M30291FATHP#U3AAU3 FAQ
1.How can I place an order for M30291FATHP#U3AAU3 through Aetrix?
Please submit a Request for Quotation (RFQ) for M30291FATHP#U3AAU3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for M30291FATHP#U3AAU3 reliable?
The price and inventory of M30291FATHP#U3AAU3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M30291FATHP#U3AAU3 is usually 5 days.
3.What payment methods are accepted for M30291FATHP#U3AAU3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M30291FATHP#U3AAU3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M30291FATHP#U3AAU3?
M30291FATHP#U3AAU3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M30291FATHP#U3AAU3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for M30291FATHP#U3AAU3?
For technical support, including M30291FATHP#U3AAU3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M30291FATHP#U3AAU3 requirements.
6.How does Aetrix verify that M30291FATHP#U3AAU3 is sourced from the original manufacturer or authorized distributors?
All M30291FATHP#U3AAU3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M30291FATHP#U3AAU3 meets industry standards.
7.What is the process for return or replacement of M30291FATHP#U3AAU3?
All M30291FATHP#U3AAU3 units undergo pre-shipment inspection (PSI). If there is an issue with M30291FATHP#U3AAU3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The M30291FATHP#U3AAU3 part is unused and in its original packaging.
Return procedure for M30291FATHP#U3AAU3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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