Renesas M306NLFHGP#U3

Overview

M306NLFHGP#U3 from Renesas Electronics is a 16-bit Flash-based MCU in the M16C/6N Group, built on high-performance silicon gate CMOS with the M16C/60 Series CPU core. It delivers 41.7 ns minimum instruction execution time at 24 MHz, integrates a CAN 2.0B module, 10-bit 26-channel A/D converter, dual 8-bit D/A channels, and two DMAC channels - enabling real-time control in automotive body electronics and industrial motor drives.

For engineers reviewing the M306NLFHGP#U3 datasheet, M306NLFHGP#U3 pinout, M306NLFHGP#U3 application, or M306NLFHGP#U3 equivalent, key selection criteria include its 100-pin LQFP package, 384 KB + 4 KB data flash ROM, 31 KB RAM, -40°C to +85°C operating range, and integrated CAN interface for deterministic vehicle network communication.

Technical Context

The M306NLFHGP#U3 implements a single-chip mode with memory expansion and microprocessor modes, supporting up to 1 Mbyte address space. Its CPU executes 91 fundamental instructions with hardware multiplier and CRC-CCITT calculation circuit for embedded integrity checking.

Peripheral integration includes five 16-bit Timer A channels and six 16-bit Timer B channels, three-phase motor control logic, I²C-bus (1 channel), IEBus (2 channels), UART, clock-synchronous serial interfaces (3 channels), and a watchdog timer with 15-bit counter and prescaler - all coordinated via a 7-level priority interrupt system with 30 internal and 9 external sources.

Key Specifications

Pinout & Package

Package: 100-pin molded-plastic LQFP (PLQP0100KB-A), 14 mm × 14 mm, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LEGLF#30, M306NLFHGP#U3 provides essential CAN 2.0B and motor control hardware for automotive networks; compared with MB9BF506RPMC-G-SNE2, it offers proven qualification and lower power in established 16-bit architectures - making it optimal for cost-constrained, CAN-dependent industrial upgrades.

Availability

M306NLFHGP#U3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, factory automation I/O terminals, and smart power distribution units requiring stable component supply over extended production lifecycles.

Supply support for M306NLFHGP#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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The M16C/6N Group, including M306NLFHGP#U3, was designed for deterministic real-time control in automotive and industrial environments where CAN connectivity, analog integration, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the M306NLFHGP#U3?

The M306NLFHGP#U3 achieves a minimum instruction execution time of 41.7 ns at 24 MHz BCLK, enabled by its M16C/60 Series CPU core and PLL frequency synthesizer. This corresponds to a maximum effective operating frequency of 24 MHz under specified conditions (1/1 prescaler, no software wait states). The device supports both crystal and external clock inputs for BCLK, with the PLL allowing internal frequency multiplication for optimized peripheral timing.

Does the M306NLFHGP#U3 include an integrated CAN transceiver?

No, the M306NLFHGP#U3 includes only the CAN protocol controller compliant with ISO 11898-1 (CAN 2.0B), not the physical layer transceiver. An external CAN transceiver (e.g., TJA1042 or SN65HVD230) must be used to drive the differential CAN_H/CAN_L bus lines. Pins P9_5 (CRX0) and P9_6 (CTX0) are dedicated CAN receive and transmit signals, respectively, and require proper termination and ESD protection per ISO 11898-2.

What is the flash memory endurance specification for the M306NLFHGP#U3?

The M306NLFHGP#U3 specifies 100 program/erase cycles for its Flash memory, applicable to both main program memory and the 4 KB data flash block (Block A). Programming and erasure require either 3.3 ± 0.3 V or 5.0 ± 0.5 V VPP voltage applied to the dedicated programming pin. Field updates must account for this cycle limit, especially in data logging applications - wear leveling or block rotation strategies are recommended for extended reliability.

How many analog input channels does the M306NLFHGP#U3 support?

The M306NLFHGP#U3 supports 26 analog input channels for its 10-bit A/D converter, distributed across four groups: AN0_0–AN0_7 (8 channels), AN2_0–AN2_7 (8 channels), AN4–AN7 (4 channels), and ANEX0–ANEX1 (2 channels), plus AN0–AN3 (4 channels) on port P10. All channels share a common 10-bit successive approximation register (SAR) ADC with programmable sample-and-hold timing, enabling flexible multiplexed acquisition in motor control and sensor monitoring applications.

Is the M306NLFHGP#U3 pin-compatible with other members of the M16C/6N Group?

Yes, the M306NLFHGP#U3 is pin-compatible with other 100-pin variants in the M16C/6N Group, including M306NLFJGP (512 KB Flash) and M306NLME-XXXGP (Mask ROM versions), all using the PLQP0100KB-A package. Pin assignments, electrical characteristics, and peripheral mappings are identical across these variants - allowing hardware reuse when scaling Flash capacity or selecting ROM type, provided software accommodates memory size differences.