Renesas M306N4FGGP#U3

Overview

M306N4FGGP#U3 from Renesas Electronics is a 16-bit flash-based microcontroller in the M16C/6N Group, built on high-performance silicon gate CMOS with the M16C/60 Series CPU core. It features 256 KB + 4 KB data flash ROM, 10 KB RAM, dual CAN 2.0B modules, 10-bit 26-channel A/D converter, and operates at up to 24 MHz (VCC = 4.2–5.5 V) for automotive and industrial control systems.

For engineers reviewing the M306N4FGGP#U3 datasheet, M306N4FGGP#U3 pinout, M306N4FGGP#U3 application, or M306N4FGGP#U3 equivalent, key selection considerations include its 100-pin LQFP package (PLQP0100KB-A), dual-CAN interface compliance, T/V-grade temperature support (−40°C to +125°C), and integrated three-phase motor control circuitry.

Technical Context

The M306N4FGGP#U3 implements the M16C/60 Series CPU core with 91 fundamental instructions and minimum instruction execution time of 50.0 ns at 20 MHz BCLK (1/1 prescaler). It supports single-chip, memory expansion, and microprocessor operating modes with 1 Mbyte address space and four clock generation circuits - including main/sub oscillators, on-chip oscillator, and PLL frequency synthesizer.

Peripheral integration includes two 16-bit multifunction timer groups (Timer A: 5 channels; Timer B: 6 channels), three serial interfaces (UART, clock-synchronous, I²C-bus, IEBus), CRC-CCITT calculation circuit, watchdog timer, and DMAC with two channels - all coordinated via a centralized interrupt controller with 31 internal and 9 external sources across 7 priority levels.

Key Specifications

Pinout & Package

Package: 100-pin plastic LQFP (PLQP0100KB-A, also designated 100P6Q-A), RoHS-compliant, body size 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 M306N4FGGP#U3, the R5F566TEADFP#30 offers higher computational throughput but drops IEBus and changes packaging, while the MB9BF518RPMC-G-SNE2 provides ARM-standard development flow at the cost of dedicated motor control hardware - making M306N4FGGP#U3 optimal for cost-sensitive, IEBus-dependent, or hardware-accelerated motor applications.

Availability

M306N4FGGP#U3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, car audio systems, and factory automation I/O hubs requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M306N4FGGP#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 automotive, industrial, and IoT markets.

The M16C/6N Group, including M306N4FGGP#U3, was designed specifically for real-time embedded control in harsh environments - emphasizing CAN robustness, analog integration, and hardware motor control acceleration for automotive and industrial applications.

FAQ

What is the maximum operating frequency of the M306N4FGGP#U3?

The M306N4FGGP#U3 achieves a minimum instruction execution time of 50.0 ns at 20 MHz BCLK (1/1 prescaler, no software wait), corresponding to a maximum operating frequency of 20 MHz for V-version operation. Its PLL frequency synthesizer allows internal clock scaling, but the guaranteed BCLK limit remains 20 MHz under VCC = 4.2–5.5 V and −40°C to +125°C conditions. The M306N4FGGP#U3 does not support 24 MHz operation in V-version mode.

Does the M306N4FGGP#U3 support IEBus communication?

Yes, the M306N4FGGP#U3 integrates native IEBus (Inter Equipment Bus) functionality as a dedicated peripheral, supporting legacy automotive infotainment protocols. This capability is confirmed in the "Serial interfaces" specification listing "IEBus (2)" and is physically implemented via pins P6_4/CTS1/RTS1/CTS0/CLKS1 and associated control registers. The M306N4FGGP#U3 requires no external transceivers for basic IEBus operation.

What is the flash endurance rating for the M306N4FGGP#U3?

The M306N4FGGP#U3 specifies a flash programming and erasure endurance of 100 cycles, as documented in the Electrical Characteristics section. This applies to both main program flash and the dedicated 4 KB data flash block (Block A). Endurance is measured under standard conditions (VCC = 5.0 ± 0.5 V), and wear-leveling must be implemented in firmware for applications requiring frequent data updates.

How many A/D input channels does the M306N4FGGP#U3 support?

The M306N4FGGP#U3 supports 26 analog input channels for its 10-bit A/D converter. These are distributed across three groups: AN0_0–AN0_7 (8 channels on P0), AN2_0–AN2_7 (8 channels on P2), AN0–AN7 (8 channels on P10), plus two extended analog inputs (ANEX0, ANEX1) on P9_5 and P9_6 - totaling 26 distinct configurable inputs as specified in Table 1.1 and Figure 1.1 block diagram.

Is the M306N4FGGP#U3 pin-compatible with other M16C/6N4 variants?

Yes, the M306N4FGGP#U3 shares identical pinout and package (PLQP0100KB-A) with all other M16C/6N4 members in the GP (LQFP) variant family, including M306N4FCGP, M306N4FCTGP, and M306N4FGTGP. Pin assignments, electrical characteristics, and peripheral mappings are consistent across these variants - only ROM size, temperature grade, and memory type differ. This enables hardware reuse across Normal-, T-, and V-version designs.