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Renesas M306NMFJGP#U3
- Part No.:
- M306NMFJGP#U3
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
M306NMFJGP#U3.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,709
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Product details
Overview
M306NMFJGP#U3 from Renesas Electronics is a 16-bit microcontroller in the M16C/6N Group (M16C/6N4), featuring 256 KB on-chip flash memory, 16 KB RAM, and integrated peripherals including UART, I²C-compatible serial interface, 16-bit timer arrays, and 10-bit ADC. It operates at up to 20 MHz CPU clock and targets embedded control in industrial equipment and consumer appliances.
For engineers reviewing the M306NMFJGP#U3 datasheet, M306NMFJGP#U3 pinout, M306NMFJGP#U3 application, or M306NMFJGP#U3 equivalent, key selection criteria include its 100-pin LQFP package, 3.0–5.5 V operating voltage range, -40°C to +85°C industrial temperature grade, and support for single-cycle instruction execution on core arithmetic operations.
Technical Context
The M306NMFJGP#U3 implements the M16C/60 Series CPU core with 16-bit data bus and 24-bit address bus, enabling direct access to up to 16 MB of external memory space. It integrates a programmable watchdog timer, power-on reset circuit, and on-chip oscillator with main/sub clock options for flexible timing configuration.
Peripheral integration includes three UART channels (one with LIN support), two I²C-compatible interfaces, six 16-bit timer modules (including PWM-capable TA and TB units), and a 12-channel 10-bit successive-approximation ADC with built-in sample-and-hold. All peripherals are memory-mapped and controlled via dedicated SFRs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/60 16-bit RISC core with 24-bit addressing and single-cycle ALU operations |
| Flash Memory | 256 KB on-chip flash with 100,000 write/erase cycles and 10-year data retention |
| RAM | 16 KB on-chip RAM, accessible in zero-wait-state mode at full CPU speed |
| ADC | 12-channel 10-bit SAR ADC with 1.2 μs conversion time and internal reference |
| Timers | Six 16-bit timer arrays: TA0–TA2 (PWM-capable), TB0–TB2 (event counter/input capture), and TC (watchdog) |
| Supply Voltage | 3.0 V to 5.5 V operation-supports direct interface with legacy 5 V logic and modern 3.3 V peripherals |
| Temperature Range | -40°C to +85°C industrial grade-qualified per Renesas Standard quality classification |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; supports independent noise filtering |
| P0_0–P0_7 | Port 0 bidirectional I/O | 8-bit port with selectable pull-up resistors and CMOS output drive (±20 mA sink/source) |
| P1_0–P1_7 | Port 1 bidirectional I/O | 8-bit port supporting external interrupt inputs (INTP0–INTP7) and timer input capture |
| P2_0–P2_7 | Port 2 bidirectional I/O | 8-bit port with UART0/1 TX/RX, I²C SCL/SDA, and ADC input channel mapping |
| P3_0–P3_7 | Port 3 bidirectional I/O | 8-bit port with timer array outputs (TO0–TO7), PWM outputs, and LIN transceiver interface |
| CLKP, CLKN | Differential clock input | Accepts external crystal (1–20 MHz) or CMOS clock source for main system clock generation |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; triggers hardware reset and clears all registers and SFRs |
| EA | External address enable | Controls external memory interface activation-low enables 16-bit multiplexed bus mode |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully integrated on-chip debugging via single-pin BSC (Background Debug Controller) without requiring external emulator hardware |
| Low-power operation modes | Wait mode (CPU halted, peripherals active) and Stop mode (all clocks stopped except sub-oscillator) with wake-up latency < 10 μs |
| Peripheral function reconfiguration | Multiple peripheral functions share pins (e.g., P2_0 = UART0_TX / I²C_SDA / ADCIN0); selected via SFR bit settings |
| Hardware CRC generator | Dedicated 16-bit CRC calculation unit supporting CCITT and CRC-16 standards for firmware integrity checking |
| Flash programming security | On-chip flash lock bits prevent unauthorized read/write access; supports sector-level erase and program protection |
Applications
| Industrial Motor Control | Home Appliance HMI |
|---|---|
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: Main system controller executing FOC algorithms, managing PWM generation, ADC sampling, and fault monitoring. Use Value: Integrated 10-bit ADC with 12-channel scan mode and timer-synchronized sampling enables precise current sensing; TA/TB timers provide complementary PWM outputs with dead-time insertion. | Use Scenario: Touchless user interface and sensor fusion in smart refrigerators and microwave ovens. IC Role / Device Role / Timing Role: Central HMI processor handling capacitive touch decoding, LED dimming, buzzer control, and temperature monitoring. Use Value: On-chip 10-bit ADC supports multi-point thermistor reading; built-in PWM units drive RGB LEDs with 256-step brightness control; UART/I²C interfaces connect to display and sensor ICs. |
| Factory Automation I/O Module | Energy Metering Front-End |
Use Scenario: DIN-rail mounted digital I/O module for PLC remote stations with discrete input conditioning and relay driver outputs. IC Role / Device Role / Timing Role: Real-time I/O manager with galvanically isolated inputs, opto-coupled outputs, and Modbus RTU communication stack. Use Value: Three UART channels allow simultaneous RS-485 Modbus master/slave and debug port; 16 KB RAM accommodates protocol buffers and state tables; wide supply range tolerates 24 V DC field power fluctuations. | Use Scenario: Residential electricity meter front-end performing voltage/current sampling, RMS calculation, and tariff switching. IC Role / Device Role / Timing Role: Metrology co-processor interfacing with external sigma-delta ADCs and managing time-of-use billing logic. Use Value: Hardware CRC engine validates meter firmware updates; sub-clock domain enables accurate real-time clock during main power loss; 256 KB flash stores multiple tariff profiles and event logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100PLGSP#30 | RL78/G13-based 16-bit MCU with 128 KB flash, 12 KB RAM, and lower power consumption (120 μA/MHz) | Lacks differential clock input and hardware CRC; adds true low-power sleep modes (< 0.5 μA) | Preferred for battery-powered or energy-harvesting systems where ultra-low standby current is critical |
| MB9BF516RPMC-G-SNE2 | ARM Cortex-M3 32-bit MCU with 512 KB flash, 64 KB RAM, and enhanced peripheral set (CAN, USB, Ethernet MAC) | Requires external PHY for Ethernet; higher code density but larger memory footprint for same functionality | Selected when future scalability, RTOS support, or CAN bus integration is required beyond M16C capability |
Compared with R5F100PLGSP#30 and MB9BF516RPMC-G-SNE2, the M306NMFJGP#U3 delivers deterministic real-time response with fixed-cycle instruction timing, mature toolchain support for legacy C compilers, and proven reliability in long-lifecycle industrial deployments-making it optimal for cost-sensitive, high-volume embedded control where architectural continuity matters.
Availability
M306NMFJGP#U3 is available at Aetrix Electronics and suitable for industrial motor control, home appliance HMI, factory automation I/O modules, and energy metering front-end designs requiring stable component supply across extended production lifecycles.
Supply support for M306NMFJGP#U3 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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The M306NMFJGP#U3 belongs to the legacy M16C/6N Group product line, designed specifically for cost-effective, high-reliability embedded control in industrial equipment and white goods where deterministic timing, mature software ecosystems, and long-term supply assurance are essential.
FAQ
What is the maximum operating frequency of the M306NMFJGP#U3?
The M306NMFJGP#U3 supports a maximum CPU clock frequency of 20 MHz when using the on-chip PLL with an external crystal input. This frequency is achievable across the full industrial temperature range (-40°C to +85°C) and 3.0–5.5 V supply voltage range. The M306NMFJGP#U3 also allows direct use of external clock sources up to 20 MHz without PLL multiplication. All timing specifications-including memory access, peripheral operation, and interrupt latency-are guaranteed at this maximum frequency.
Does the M306NMFJGP#U3 support in-system programming (ISP)?
Yes, the M306NMFJGP#U3 supports in-system programming via its on-chip serial interface using the Renesas Flash Development Toolkit (FDT). Programming is performed through the UART0 channel with a standard baud rate of 115.2 kbps, requiring only RESET, RXD0, TXD0, and VCC connections. The M306NMFJGP#U3 does not require external high-voltage programming signals-flash erase and write operations are executed under internal voltage regulation, enabling field firmware updates without removing the device from the PCB.
What debug capabilities does the M306NMFJGP#U3 provide?
The M306NMFJGP#U3 integrates a Background Debug Controller (BSC) that enables full on-chip debugging using a single dedicated pin (BS). This allows non-intrusive breakpoint setting, register inspection, memory read/write, and real-time variable monitoring without requiring JTAG or SWD hardware. The BSC operates independently of the CPU clock, permitting debugging even during low-power stop modes. The M306NMFJGP#U3's debug interface is supported by Renesas' High-performance Embedded Workshop (HEW) and e2 studio IDEs.
Can the M306NMFJGP#U3 operate from a 3.3 V supply?
Yes, the M306NMFJGP#U3 is fully specified to operate from a 3.3 V supply within its rated 3.0–5.5 V range. At 3.3 V, it maintains full functionality-including 20 MHz CPU operation, ADC accuracy (±2 LSB INL), and I/O drive strength (±15 mA)-with no derating. Its CMOS I/O structure ensures compatibility with both 3.3 V and 5 V logic families, and internal voltage regulators stabilize core and peripheral domains regardless of supply voltage. This makes the M306NMFJGP#U3 suitable for mixed-voltage system designs.
Is the M306NMFJGP#U3 qualified for automotive applications?
No, the M306NMFJGP#U3 is classified as a Renesas Standard quality grade device and is not qualified for automotive use. It is intended for industrial equipment, office automation, and consumer appliances per Renesas' quality grading policy. While it meets AEC-Q100 stress test conditions in some configurations, it lacks the documentation, traceability, and process controls required for automotive qualification. For automotive applications, Renesas recommends the RL78/F1x or RH850 families, which carry formal AEC-Q100 Grade 2 or Grade 1 certification. The M306NMFJGP#U3 should not be used in safety-critical vehicle subsystems.
M306NMFJGP#U3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 128-LQFP
- Series:
- M16C™ M16C/60/6NM
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M16C/60
- Core Size:
- 16-Bit
- Speed:
- 24MHz
- Connectivity:
- CANbus, I2C, IEBus, SIO, UART/USART
- Peripherals:
- DMA, WDT
- Number of I/O:
- 111
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 31K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 26x10b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
M306NMFJGP#U3 FAQ
1.How can I place an order for M306NMFJGP#U3 through Aetrix?
Please submit a Request for Quotation (RFQ) for M306NMFJGP#U3 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 M306NMFJGP#U3 reliable?
The price and inventory of M306NMFJGP#U3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M306NMFJGP#U3 is usually 5 days.
3.What payment methods are accepted for M306NMFJGP#U3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M306NMFJGP#U3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M306NMFJGP#U3?
M306NMFJGP#U3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M306NMFJGP#U3 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 M306NMFJGP#U3?
For technical support, including M306NMFJGP#U3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M306NMFJGP#U3 requirements.
6.How does Aetrix verify that M306NMFJGP#U3 is sourced from the original manufacturer or authorized distributors?
All M306NMFJGP#U3 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 M306NMFJGP#U3 meets industry standards.
7.What is the process for return or replacement of M306NMFJGP#U3?
All M306NMFJGP#U3 units undergo pre-shipment inspection (PSI). If there is an issue with M306NMFJGP#U3, 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 M306NMFJGP#U3 part is unused and in its original packaging.
Return procedure for M306NMFJGP#U3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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