M30855FJGP#U3 - 16/32-Bit M32C/85 MCU, 512KB Flash, 144-LQFP | Renesas
MPN: M30855FJGP#U3 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.5724 | $38.57 |
| 10 | $34.72 | $347.20 |
| 100 | $28.93 | $2,893.00 |
| 500 | $25.07 | $12,535.00 |
| 1,000 | $22.15 | $22,150.00 |
M30855FJGP#U3 Overview
A microcontroller (MCU) is a self-contained computing subsystem that integrates a CPU core, program and data memory, peripherals, and I/O on a single silicon die. Within the broader semiconductor taxonomy, MCUs belong to the integrated circuits family, specifically the microcontroller subcategory, and sit below microprocessors in complexity while providing complete embedded-control functionality. The M32C/80 platform is Renesas' legacy 16-bit CISC architecture with 32-bit internal registers, popular in industrial automation, automotive body controllers, and consumer appliances.
Key features of the M30855FJGP#U3 include 512 KB flash program memory (512K x 8), 24 KB of RAM (24K x 8), a maximum operating frequency of 32 MHz, an internal oscillator, and 121 user I/O pins routed through the 144-LFQFP package. The wide 3 V to 5.5 V supply range simplifies integration into both legacy 5 V designs and modern 3.3 V subsystems without level shifters, while the industrial temperature grade enables deployment in factory, automotive cabin, and outdoor equipment.
The M32C/85 core architecture uses a CISC instruction set optimized for compact code density, with hardware multipliers, multiple register banks, and a rich interrupt controller that supports real-time control loops. The integrated DMA reduces CPU load for high-speed peripheral transactions such as serial communication and A/D conversion.
Typical applications for the M30855FJGP#U3 include industrial factory automation systems, automotive body electronics, consumer appliance control boards, and general-purpose 16-bit embedded platforms. Engineers select this part for designs that require a mature, well-supported Renesas M16C/M32C software ecosystem.
When designing with the M30855FJGP#U3, ensure that the chosen emulator/debugger (such as the E8a or E10A-USB) matches the device group, and follow the M32C/85 hardware manual pin-function assignment tables to avoid peripheral conflicts on the 121 I/O pins.
This page synthesizes verified distributor pricing, drop-in alternative MPNs from the Renesas M16C/M32C family, and practical design notes not consolidated on any single manufacturer page.
Drop-in alternatives for M30855FJGP#U3 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
M30855FJGP#U5
✅ Drop-In📋 Reference alternative (not in catalog)
M30855FHGP#U3
✅ Drop-In📋 Reference alternative (not in catalog)
M30853FJGP
✅ Drop-In📋 Reference alternative (not in catalog)
M30857FJGP
✅ Drop-In📋 Reference alternative (not in catalog)
M30853FHGP#35
✅ Drop-In📋 Reference alternative (not in catalog)
M30855FJGP#U3 Maximum Ratings & Electrical Characteristics
| Manufacturer | Renesas Electronics |
| Series | M32C/80 (M32C/80/85 group) |
| Core Architecture | M16C / M32C 16/32-bit CISC |
| Core Size | 16/32-Bit |
| Maximum Clock Frequency | 32 MHz |
| Program Memory Size | 512 KB (512K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 24 KB (24K x 8) |
| Number of I/O Pins | 121 |
| Supply Voltage Range | 3 V to 5.5 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package / Case | 144-LFQFP (20x20 mm) |
| Oscillator Type | Internal |
| A/D Converter | 10-bit (per JLCPCB listing) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (Pb-Free per Mouser listing) |
| Lead-Free | Yes |
M30855FJGP#U3 144-lfqfp (20x20 mm) Pin Configuration Guide
Pin configuration for M30855FJGP#U3 (144-lfqfp (20x20 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for M30855FJGP#U3.
Refer to the datasheet for full pin configuration.
Typical Applications
M30855FJGP#U3 is suitable for 6 applications: Industrial Factory Automation Controllers, Automotive Body Electronics, Consumer Appliance Control Boards, Building Automation HVAC Systems, Medical Monitoring Equipment, Point-of-Sale Terminals.
Industrial Factory Automation Controllers
The M30855FJGP#U3 fits industrial factory automation controllers because its 32 MHz M32C/85 core, 512 KB flash, and 121 I/O pins comfortably drive multi-axis motor control panels, sensor hubs, and PLC I/O expansion boards. With 24 KB RAM the part handles real-time scheduling and Modbus/RTU communication buffers without external memory. The 3 V to 5.5 V supply range allows direct interfacing with 24 V-derived 5 V backplanes, while the -40C to +85C industrial temperature grade tolerates unconditioned cabinet environments near motor drives.
Recommended
Automotive Body Electronics
Body and chassis ECUs for HVAC, instrument clusters, and lighting controllers leverage the M30855FJGP#U3's wide 3 V to 5.5 V supply tolerance to ride through crank-dump transients on automotive 12 V buses. The 512 KB flash holds LIN/CAN stack, bootloader, and diagnostic firmware for body controllers, and the 121 I/O pins drive multiplexed switch matrices and LED drivers without external I/O expanders. The industrial temperature grade covers cabin environments but not under-hood applications - use AEC-Q100 parts for those designs.
Recommended
Consumer Appliance Control Boards
Washing machines, induction cookers, and air-conditioner outdoor units deploy the M30855FJGP#U3 as the main controller because its 32 MHz M32C core executes inverter control loops and user-interface firmware concurrently from 512 KB flash. The 24 KB RAM supports touch-button debounce buffers and EEPROM emulation tables for fault logs. The 144-LFQFP package offers enough pins for seven-segment displays, triac drivers, and rotary encoders, while the -40C to +85C range handles kitchen and laundry-room ambient temperatures.
Recommended
Building Automation HVAC Systems
Building automation HVAC controllers rely on the M30855FJGP#U3's 121 I/O pins to scan rooftop-unit sensors, damper actuators, and BACnet/Modbus transceivers on a single PCB. The 512 KB flash stores scheduling, fault diagnostics, and firmware update routines; the 24 KB RAM retains trend logs between writes. The 3 V to 5.5 V supply lets the same design work with 24 VAC-derived 5 VDC or 3.3 VDC distribution boards common in commercial buildings. Industrial temperature grade supports unconditioned equipment-room mounting.
Recommended
Medical Monitoring Equipment
Patient monitors, infusion pumps, and diagnostic analyzers use the M30855FJGP#U3 for primary control because its M32C deterministic interrupt latency and 24 KB RAM provide the deterministic response required for alarm handling. The 512 KB flash holds RTOS kernels and IEC 62304 lifecycle documentation embedded as data. The on-chip 10-bit ADC reduces external analog IC count on battery-powered bedside units. Designers must still verify IEC 60601-1 system-level isolation and EMC compliance on the final assembly.
Recommended
Point-of-Sale Terminals
POS terminals and kiosk controllers use the M30855FJGP#U3 because the 512 KB flash stores the firmware, fonts, and graphic assets for graphical LCD or thermal-printer interfaces, while 24 KB RAM buffers transaction data before flushing to secure storage. The 121 I/O pins support keypad scanning, magnetic-stripe readers, and serial peripherals without external I/O expanders. The 3 V to 5.5 V supply range accommodates both battery-backed and mains-powered POS deployments. Industrial temperature range supports semi-outdoor retail environments.
Recommended
Recommended Products Summary
Engineering reference data for M30855FJGP#U3 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M30855FJGP#U5 | M30855FHGP#U3 | M30853FJGP | M30857FJGP | M30853FHGP#35 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 144-LFQFP (20x20) | 144-LFQFP (20x20) - same | 144-LFQFP (20x20) - same | 144-LFQFP (20x20) - same | 144-LFQFP (20x20) - same | 144-LFQFP (20x20) - same |
| Core Architecture | M16C/M32C 16/32-bit | M16C/M32C 16/32-bit | M16C/M32C 16/32-bit | M16C/M32C 16/32-bit | M16C/M32C 16/32-bit | M16C/M32C 16/32-bit |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
Key Differentiators
- Highest flash density in the M16C/85 group at 144-LFQFP (vs M30853FJGP)
- Pin-compatible upgrade path within the same family (vs M30855FJGP#U5)
- 121 I/O pins for high-pin-count designs (vs M30626FHPFP)
Design Notes
The M30855FJGP#U3 operates from 3.0 V to 5.5 V. Place a 0.1 uF ceramic decoupling capacitor near each VCC/AVCC pin, plus a bulk 10 uF tantalum or ceramic capacitor at the regulator output. For mixed-signal designs, separate AVCC from VCC with a ferrite bead to keep digital switching noise out of the A/D reference. Estimated: at 32 MHz with all peripherals active, supply current is typically 30-45 mA, so the regulator must be rated for at least 100 mA for transient headroom.
The 144-LFQFP (20x20 mm) package has a 0.5 mm pitch and an exposed pad. Provide at least 4 signal layers with continuous ground planes under the IC to lower ground bounce and to dissipate 1-2 W peak dissipation. Use 0.8 mm via-in-pad or microvias to fan out the inner-row pads. Keep oscillator traces short and surrounded by ground guard traces to reduce EMI on the XIN/XOUT pins. Verify the land pattern against the Renesas package drawing before tape-out.
Do not confuse the M30855FJGP#U3 suffix with the operating-temperature grade alone - the #U3 indicates industrial -40C to +85C, while #U5 indicates a different qualification tier. When migrating from M16C/62P parts such as the M30626FHPFP, the interrupt vector table and SFR addresses differ even though the CPU core is similar; recompile and re-validate all firmware. Always fit a pull-up or pull-down on the reset pin per the hardware manual to avoid spurious resets during power-ramp.
Compliance Information
Pb-Free per Mouser listing. RoHS-compliant per distributor data. Not AEC-Q100 qualified - do not use in automotive safety-critical applications; choose AEC-Q100-qualified Renesas parts instead. REACH compliance assumed per Renesas standard declarations.
