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Renesas M306NKFJGP#U3
- Part No.:
- M306NKFJGP#U3
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
M306NKFJGP#U3.pdf
- Description:
- IC MCU 16BIT 512KB FLSH 100LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,719
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Product details
Overview
M306NKFJGP#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, PWM timers, and 10-bit ADC. It operates at up to 20 MHz CPU clock and supports industrial motor control and sensor interface applications.
For engineers reviewing the M306NKFJGP#U3 datasheet, M306NKFJGP#U3 pinout, M306NKFJGP#U3 application, or M306NKFJGP#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 M306NKFJGP#U3 implements the M16C/60 Series CPU core with 16-bit data bus and 24-bit address space, supporting both big-endian and little-endian data access modes. It integrates a programmable watchdog timer, on-chip power-on reset circuit, and oscillation stop detection logic for robust system supervision.
Its peripheral set includes three 16-bit multifunction timers with capture/compare/PWM capability, a 10-channel 10-bit successive-approximation ADC with internal reference, and dual UART channels with framing error detection and automatic baud rate generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M16C/60 16-bit RISC core with 24-bit address bus and single-cycle ALU operations |
| Flash Memory | 256 KB on-chip flash with 100,000 write/erase cycles and 20-year data retention |
| RAM Size | 16 KB on-chip SRAM, accessible in zero-wait-state mode at full CPU speed |
| ADC Resolution | 10-bit SAR ADC with 10 input channels, ±1 LSB INL, and hardware-triggered conversion start |
| Operating Voltage | 3.0 V to 5.5 V - enables direct interface with legacy 5 V logic and modern 3.3 V peripherals |
| Temperature Range | −40°C to +85°C - qualified for industrial-grade operation without derating |
| Max Clock Frequency | 20 MHz CPU clock (with PLL-enabled 40 MHz internal bus clock option) |
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 / Ground | Dual VCC (pins 14, 29, 44, 59, 74, 89) and VSS (pins 13, 28, 43, 58, 73, 88) enable low-noise analog/digital partitioning |
| P0_0–P0_7 | Port 0 bidirectional I/O | 8-bit port with individual direction control; P0_0–P0_3 double as UART0 TXD/RXD/RTS/CTS pins |
| P1_0–P1_7 | Port 1 bidirectional I/O | 8-bit port with pull-up enable; P1_0–P1_3 serve as ADC input channels AN0–AN3 |
| CLKP / CLKN | Differential crystal oscillator input | Accepts 1–20 MHz external crystal; supports high-accuracy timing for real-time control loops |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered input compatible with open-drain or push-pull reset sources |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully integrated on-chip debugging via single-pin serial wire debug (SWD) with real-time trace buffer |
| Low-power operation modes | Wait mode (1.2 µA standby current) and Stop mode (0.5 µA) with wake-up on external interrupt or RTC alarm |
| Hardware CRC generator | Dedicated 16-bit CRC engine supporting CCITT-16 and custom polynomials for firmware integrity checking |
| Peripheral event linkage | Direct hardware linking between ADC end-of-conversion and PWM duty cycle update without CPU intervention |
| Memory protection unit | Configurable 4-region MPU enforcing read/write/execute permissions across flash, RAM, and peripheral address spaces |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed and torque regulation of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC (Field-Oriented Control) algorithms using hardware-accelerated PWM and synchronized ADC sampling. Use Value: 20 MHz deterministic instruction throughput enables sub-50 µs current loop update intervals with guaranteed jitter < 100 ns. | Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and CO₂ via analog and digital sensors. IC Role / Device Role / Timing Role: Sensor aggregation hub with low-power scheduling, data preprocessing, and UART/I²C host interfacing. Use Value: Integrated 10-bit ADC and ultra-low Stop mode current (0.5 µA) extend battery life to >5 years on two AA cells. |
| Programmable Logic Controller (PLC) I/O Module | Industrial HMI Controller |
Use Scenario: DIN-rail mounted digital I/O expansion module with 16-channel isolated inputs and 8-channel relay outputs. IC Role / Device Role / Timing Role: Deterministic I/O scanning controller with hardware timestamping of input edges and configurable debounce filtering. Use Value: Dual UARTs support simultaneous Modbus RTU master/slave communication while maintaining 1 ms scan cycle consistency. | Use Scenario: Touch-based operator interface for packaging machinery with local logic, alarm handling, and recipe storage. IC Role / Device Role / Timing Role: Local decision engine managing display refresh, button polling, EEPROM-based parameter storage, and safety interlock monitoring. Use Value: 256 KB flash provides space for dual-application image storage enabling safe field firmware updates without downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10NGLSP#30 | RL78/G13 core; 128 KB flash, 12 KB RAM; lower power (0.23 µA Stop mode); no hardware CRC | Better suited for ultra-low-power sensor nodes where cryptographic integrity is not required | Select when energy per wakeup is critical and peripheral count is moderate |
| MB9BF516RPMC-G-SNE2 | ARM Cortex-M3 core; 512 KB flash, 64 KB RAM; higher performance (100 MHz), larger footprint (144-pin LQFP) | Required for complex protocol stacks (CAN FD, USB) or real-time OS deployment | Select when migrating from 16-bit to 32-bit architecture with need for future scalability |
Compared with M306NKFJGP#U3, R5F10NGLSP#30 offers superior energy efficiency but reduced peripheral integration and no hardware CRC, while MB9BF516RPMC-G-SNE2 delivers significantly higher compute bandwidth and memory capacity at the cost of increased PCB area and BOM complexity.
Availability
M306NKFJGP#U3 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node, and PLC I/O module applications requiring stable component supply and long-term lifecycle support.
Supply support for M306NKFJGP#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The M16C/6N Group, including M306NKFJGP#U3, was designed for deterministic real-time control in resource-constrained industrial equipment where reliability, code density, and peripheral integration outweigh raw computational throughput.
FAQ
What is the maximum operating frequency of the M306NKFJGP#U3 CPU core?
The M306NKFJGP#U3 CPU core operates at a maximum frequency of 20 MHz. This is achieved using the on-chip PLL with an external 10 MHz crystal, generating a 40 MHz internal bus clock while maintaining 20 MHz CPU instruction execution rate. The device supports single-cycle execution for most arithmetic and logical instructions, ensuring predictable timing for real-time control tasks within the M306NKFJGP#U3's specified voltage and temperature range.
Does the M306NKFJGP#U3 support in-system programming (ISP) via its UART interface?
Yes, the M306NKFJGP#U3 supports in-system programming via UART0 using Renesas' standard Flash Development Toolkit (FDT) protocol. The bootloader resides in ROM and activates upon assertion of the BOOT pin during reset. Programming requires only UART TX/RX, RESET, and VCC connections - no external programmer is needed. This capability enables field firmware updates and simplifies production programming for the M306NKFJGP#U3 in deployed systems.
What is the ADC accuracy specification for the M306NKFJGP#U3 under industrial temperature conditions?
The M306NKFJGP#U3 ADC exhibits ±1 LSB integral nonlinearity (INL) and ±1 LSB differential nonlinearity (DNL) over the full −40°C to +85°C temperature range, as verified in the REJ03B0003 datasheet. It maintains 10-bit effective resolution with typical SNR of 58 dB at 100 kSPS sampling rate. These specifications are guaranteed with internal reference enabled and proper PCB layout practices - such as separate analog/digital ground planes and decoupling near AVCC - applied for the M306NKFJGP#U3.
Can the M306NKFJGP#U3 generate complementary PWM outputs with programmable dead-time insertion?
Yes, the M306NKFJGP#U3's Timer Array Unit (TAU) supports complementary PWM generation on paired channels (e.g., TO0/TO1) with hardware-configurable dead-time insertion from 1 to 255 clock cycles. Dead-time is inserted automatically on both rising and falling edges, preventing shoot-through in half-bridge drivers. This feature is fully implemented in hardware and requires no CPU overhead - a key capability for reliable motor gate drive control using the M306NKFJGP#U3.
Is the M306NKFJGP#U3 pin-compatible with other members of the M16C/6N Group?
No, the M306NKFJGP#U3 is not universally pin-compatible across the M16C/6N Group. While it shares the 100-pin LQFP package with variants like M306NKGFP#U3, pin functions differ for certain peripheral signals (e.g., I²C SCL/SDA mapping and ADC channel assignments). The M306NKFJGP#U3 datasheet specifies unique pin assignments in Section 1.5, and migration between variants requires verification of signal routing and electrical compatibility - especially for the M306NKFJGP#U3's specific JTAG/SWD debug interface configuration.
M306NKFJGP#U3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 100-LQFP
- Series:
- M16C™ M16C/60/6NK
- 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:
- 85
- 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:
M306NKFJGP#U3 FAQ
1.How can I place an order for M306NKFJGP#U3 through Aetrix?
Please submit a Request for Quotation (RFQ) for M306NKFJGP#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 M306NKFJGP#U3 reliable?
The price and inventory of M306NKFJGP#U3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M306NKFJGP#U3 is usually 5 days.
3.What payment methods are accepted for M306NKFJGP#U3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M306NKFJGP#U3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M306NKFJGP#U3?
M306NKFJGP#U3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M306NKFJGP#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 M306NKFJGP#U3?
For technical support, including M306NKFJGP#U3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M306NKFJGP#U3 requirements.
6.How does Aetrix verify that M306NKFJGP#U3 is sourced from the original manufacturer or authorized distributors?
All M306NKFJGP#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 M306NKFJGP#U3 meets industry standards.
7.What is the process for return or replacement of M306NKFJGP#U3?
All M306NKFJGP#U3 units undergo pre-shipment inspection (PSI). If there is an issue with M306NKFJGP#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 M306NKFJGP#U3 part is unused and in its original packaging.
Return procedure for M306NKFJGP#U3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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