Renesas M306N5FCGP#U3

Overview

M306N5FCGP#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 128 KB + 4 KB data flash memory, 5 KB RAM, one CAN 2.0B module, 10-bit A/D converter (26 channels), dual 8-bit D/A converters, and operates at up to 24 MHz (41.7 ns min instruction time) across -40°C to +85°C. It targets automotive and industrial control systems requiring integrated real-time communication and motor control.

For engineers reviewing the M306N5FCGP#U3 datasheet, M306N5FCGP#U3 pinout, M306N5FCGP#U3 application, or M306N5FCGP#U3 equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in Renesas' official REJ03B0004-0240 specification document (Rev. 2.40, Aug 2006).

Technical Context

The M306N5FCGP#U3 implements the M16C/60 Series CPU core with 91 fundamental instructions and supports single-chip, memory expansion, and microprocessor operating modes. Its 1 Mbyte address space enables flexible memory mapping for embedded control firmware.

It integrates a dedicated CAN 2.0B controller, five 16-bit Timer A channels, six 16-bit Timer B channels, three-phase motor control circuitry, and three serial interfaces (UART, clock-synchronous, I²C, IEBus). The on-chip PLL frequency synthesizer, sub-clock oscillator, and main clock oscillation circuit support precise timing across diverse system clocks.

Key Specifications

Pinout & Package

Package: 100-pin plastic LQFP (PLQP0100KB-A, 0.5 mm pitch), RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F102BAASP#30 and MB9BF518RPMC-G-S2, the M306N5FCGP#U3 uniquely balances mature CAN 2.0B integration, deterministic real-time response, and proven qualification for automotive Normal-ver. (-40°C to +85°C) applications - making it optimal for cost-sensitive, CAN-dependent legacy and mid-life-cycle systems.

Availability

M306N5FCGP#U3 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O subsystems, and car audio amplifier controllers requiring stable component supply and long-term lifecycle support.

Supply support for M306N5FCGP#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 the M306N5FCGP#U3, was designed for real-time embedded control in automotive and industrial equipment - emphasizing CAN connectivity, motor control acceleration, and mixed-signal integration.

FAQ

What is the maximum operating frequency of the M306N5FCGP#U3?

The M306N5FCGP#U3 achieves a minimum instruction execution time of 41.7 ns at 24 MHz (with 1/1 prescaler and no software wait states), corresponding to a maximum bus clock (BCLK) frequency of 24 MHz. This is specified for VCC = 4.2–5.5 V and ambient temperatures from -40°C to +85°C. Operation at 24 MHz requires stable power delivery and proper decoupling per Renesas' layout guidelines in the REJ03B0004-0240 datasheet.

Does the M306N5FCGP#U3 include an integrated CAN transceiver?

No, the M306N5FCGP#U3 contains only a CAN protocol controller compliant with ISO 11898-1 (CAN 2.0B). It requires an external physical-layer transceiver (e.g., TJA1042, SN65HVD230) connected to pins P9_5 (CRX0) and P9_6 (CTX0). These pins provide differential receive and transmit signals - not direct connection to the CAN bus - and must be interfaced through a compliant transceiver.

What package type does the M306N5FCGP#U3 use, and is it RoHS-compliant?

The M306N5FCGP#U3 uses the PLQP0100KB-A 100-pin LQFP package (0.5 mm pitch), as confirmed in Table 1.2 of the REJ03B0004-0240 datasheet. Renesas specifies this variant as RoHS-compliant and lead-free, consistent with EU Directive 2011/65/EU. The package is moisture-sensitive level 3 (MSL3) and requires appropriate handling and reflow profile per J-STD-020.

How many A/D input channels does the M306N5FCGP#U3 support, and what is the resolution?

The M306N5FCGP#U3 integrates a single 10-bit successive-approximation A/D converter supporting up to 26 analog input channels. These are distributed across three groups: AN0_0–AN0_7 (8 channels), AN2_0–AN2_7 (8 channels), ANEX0/ANEX1 (2 extended inputs), and AN0–AN7 (8 additional inputs via P10 port). All channels share the same 10-bit resolution and reference voltage (VREF), with conversion times programmable down to 1.5 µs.

Is the M306N5FCGP#U3 pin-compatible with other members of the M16C/6N Group?

Yes, the M306N5FCGP#U3 shares identical pinout and package (PLQP0100KB-A) with other M306N5xCGP variants, including M306N5MCGP (mask ROM version) and M306N5FCTGP (T-ver. automotive grade). Pin compatibility extends to all 100 pins - including power, reset, clock, CAN, A/D, D/A, and I/O - enabling drop-in replacement within the same memory and temperature grade family.