Renesas M30800FCFP#U3J

Overview

M30800FCFP#U3J from Renesas Electronics is a 16-bit single-chip microcontroller belonging to the M16C/80 Group, featuring 256 KB on-chip Flash memory, 16 KB RAM, and integrated peripherals including UART, Timer A/B, A/D converter, and programmable I/O ports. It operates at up to 20 MHz with 5 V supply and supports industrial temperature range (−40°C to +85°C). It is used in motor control, industrial automation, and embedded instrumentation systems.

For engineers reviewing the M30800FCFP#U3J datasheet, M30800FCFP#U3J pinout, M30800FCFP#U3J application, or M30800FCFP#U3J equivalent, key selection considerations include its 100-pin LQFP package, 10-bit 16-channel A/D converter, three-phase PWM timer support, and compatibility with Renesas' M16C development tools and C compiler suite.

Technical Context

The M30800FCFP#U3J implements the M16C CPU core with 16-bit ALU, 24-bit address bus, and Harvard architecture for instruction/data separation. It integrates a clock generating circuit supporting crystal, ceramic resonator, or external clock input, plus multiple power-saving modes (Stop, Wait) controlled via system clock registers CM0/CM1.

Its peripheral set includes four UART channels (UART0–UART3), five 16-bit timers (Timer A0–A4, B0–B5), a 16-channel 10-bit A/D converter with scan mode, and dedicated three-phase motor control logic with dead-time insertion (DTT register) and output buffer registers (IDB0/IDB1).

Key Specifications

Pinout & Package

This device is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad, compliant with JEDEC MO-220 standard. Pin assignments follow the M16C/80 Group pin configuration as defined in Renesas Hardware Manual Rev. 1.00 (2005.08).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100PLGFB#30 and HD64F3687FPV, the M30800FCFP#U3J uniquely balances mature industrial qualification, integrated three-phase motor control logic, and 256 KB Flash capacity-making it optimal for cost-sensitive, volume-manufactured motor drives requiring no external PWM controllers.

Availability

M30800FCFP#U3J is available at Aetrix Electronics and suitable for industrial motor drive, programmable logic controller, and embedded instrumentation applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for M30800FCFP#U3J 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 enterprise applications.

The M16C/80 Group was designed for deterministic real-time control in resource-constrained industrial environments, emphasizing peripheral integration, Flash reliability, and seamless toolchain support for C and assembly development.

FAQ

What is the maximum operating frequency of the M30800FCFP#U3J?

The M30800FCFP#U3J operates at a maximum system clock frequency of 20 MHz, delivering 1.25 MIPS per MHz. Its internal clock generator supports direct crystal input (1–10 MHz) with programmable division, enabling precise timing for motor control loops and serial communications. The M30800FCFP#U3J maintains full peripheral functionality-including A/D conversion and UART baud rate generation-at this rated speed.

Does the M30800FCFP#U3J support in-circuit debugging?

Yes, the M30800FCFP#U3J includes an on-chip debug interface compatible with Renesas E8/E8a emulators and the HEW (High-performance Embedded Workshop) IDE. It supports breakpoints, watchpoints, real-time variable monitoring, and flash programming during development. The M30800FCFP#U3J uses dedicated pins (e.g., TDI, TDO, TCK) for JTAG-style debugging without consuming user I/O resources.

Is the M30800FCFP#U3J pin-compatible with other M16C/80 series devices?

The M30800FCFP#U3J shares the same 100-pin LQFP package and core pinout as other M16C/80 Group members like M30624FGFP#U3 and M30626FGFP#U3, but differs in Flash/RAM size and peripheral enablement. Pin-to-pin compatibility is confirmed for power, reset, clock, and common I/O ports; however, some alternate functions (e.g., UART3 vs. Timer B5) vary between variants and require schematic review before substitution.

What A/D converter features does the M30800FCFP#U3J provide?

The M30800FCFP#U3J integrates a 10-bit successive-approximation A/D converter with 16 input channels, selectable sample-and-hold time, and hardware-triggered scan mode. It supports internal reference (VREF = VCC) or external reference input, and conversion results are stored directly into RAM via DMAC transfer. The M30800FCFP#U3J achieves 1.2 μs conversion time and ±1 LSB integral nonlinearity across −40°C to +85°C.

How is Flash memory protected against accidental overwrite on the M30800FCFP#U3J?

The M30800FCFP#U3J implements Flash protection via lock-bit configuration in the Flash control register (FLMCR). Users can set sector-wise write/erase protection, disable on-chip programming, and prevent read-out of secured code. Once enabled, protection persists through power cycles and requires a full chip erase (with password) to lift-ensuring firmware IP remains safeguarded in deployed M30800FCFP#U3J units.