MC908LJ12CFUER - 8-Bit 8MHz 12KB MCU | NXP | 64-QFP
MPN: MC908LJ12CFUER ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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MC908LJ12CFUER Overview
An 8-bit microcontroller is a compact embedded-processing component that executes firmware from nonvolatile program memory and controls digital inputs, outputs, timers, communications, and other peripherals. The HC08 architecture belongs to the M68HC08 microcontroller family and is positioned below higher-bit embedded processors in processing capacity. In the system hierarchy, this component is a microcontroller, or MCU, within the broader semiconductor category, combining a CPU core, memory, peripherals, and I/O in one package.
The verified specifications identify 8 KB of Flash memory in one listing as 12 KB (12K x 8), an 8 MHz clock, 32 I/O pins, and connectivity including IrSCI and SPI. Listed peripherals include LCD, low-voltage detection, power-on reset, and PWM functions. These features support applications such as small control panels, display-oriented embedded products, communication modules, and low-cost industrial or consumer equipment. The 64-QFP package also provides a substantial pin count for systems that need multiple discrete signals.
The HC08LJ and HC08LK families are described in the verified source material as members of the low-cost, high-performance M68HC08 family of 8-bit microcontroller units. The 8 MHz operating speed and 12 KB Flash capacity position the MC908LJ12CFUER for compact embedded control rather than high-throughput processing. Because the supplied data does not state supply voltage, RAM capacity, timer details, operating temperature, or exact peripheral pin assignments, those values require confirmation in the manufacturer datasheet before a new design is released.
Typical design considerations include checking every QFP pin assignment, ensuring the board meets the package land-pattern and thermal requirements, and verifying the firmware toolchain and programming interface. Since the available product listings describe the part as not for new designs in one source, engineers should confirm lifecycle status with NXP or an authorized distributor before committing to production procurement. A replacement must be evaluated for exact pin compatibility, memory requirements, peripheral mapping, and software compatibility rather than relying only on the device name.
This page summarizes the verified distributor and technical-source data for MC908LJ12CFUER and distinguishes confirmed parameters from fields requiring datasheet confirmation. It also provides design-focused context for engineers evaluating an 8-bit HC08 MCU in embedded control systems.
Drop-in alternatives for MC908LJ12CFUER — 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:
MC68HC98LJ12CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908LJ12CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908LJ12CFUER Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller unit (MCU) |
| Architecture | M68HC08 / HC08 |
| Core Processor | HC08 |
| Core Size | 8-bit |
| Maximum Clock Frequency | 8 MHz |
| Program Memory Size | 12 KB (12K x 8) Flash |
| RAM Size | 512 x 8 according to one verified source listing |
| Number of I/O Pins | 32 I/O |
| Connectivity | IrSCI, SPI |
| Peripherals | LCD, LVD, POR, PWM |
| Series | HC08 |
| Package | 64-QFP (14 x 14 mm) |
| Mounting Type | Surface mount |
| Lead Status | Lead-free |
MC908LJ12CFUER 64-qfp (14 x 14 mm) Pin Configuration Guide
Pin configuration for MC908LJ12CFUER (64-qfp (14 x 14 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 MC908LJ12CFUER.
Refer to the datasheet for full pin configuration.
Typical Applications
MC908LJ12CFUER is suitable for 6 applications: Small Display Control Panel, SPI Peripheral Controller, IrSCI Communication Module, Low-Cost Motor and PWM Controller, Battery-Powered Embedded Instrument, Industrial Control Module.
Small Display Control Panel
MC908LJ12CFUER fits compact display-oriented control equipment because the verified data lists LCD support alongside an 8-bit HC08 core and 8 MHz operation. The MCU can manage keypad inputs, display-control signals, low-voltage detection, power-on reset, and application logic in one 64-QFP device. Its 12 KB Flash listing provides a defined code-storage starting point for a compact interface. The designer should verify the LCD segment count, bias requirements, timing, and pin multiplexing in the exact datasheet before laying out the display interface.
Recommended
SPI Peripheral Controller
The MC908LJ12CFUER is suitable for a small embedded controller that must exchange data with an external serial device. The verified specification list includes SPI connectivity, while the 8 MHz HC08 core and 32 I/O lines provide control signals, status inputs, and actuator outputs around the serial interface. A practical design can use SPI for a display, sensor, memory, or communications module and use GPIO for chip-select or ready signaling. Electrical timing, supported SPI modes, maximum clock rate, and pin assignments remain to be confirmed from the manufacturer documentation.
Recommended
IrSCI Communication Module
MC908LJ12CFUER can serve as the controller for an asynchronous communications-oriented embedded module because the verified data lists IrSCI connectivity and a 64-QFP package. The MCU can handle protocol framing, status, configuration, and local control functions around an external line-driver or transceiver. Its listed LCD, LVD, POR, and PWM peripherals also support a self-contained product with local feedback and monitoring. Before implementation, confirm IrSCI pin assignments, baud-rate range, clocking assumptions, electrical levels, and whether the external line interface requires additional protection.
Recommended
Low-Cost Motor and PWM Controller
The MC908LJ12CFUER is a candidate for compact PWM-based actuator and motor-control systems because PWM is included in the verified peripheral list. An 8-bit HC08 MCU can generate control signals, read feedback inputs, manage low-voltage conditions, and coordinate power-on reset behavior in a small embedded controller. The 32 listed I/O lines allow multiple limit, direction, and status connections in the 64-QFP package. Designers must confirm PWM frequency resolution, timer architecture, output polarity, and thermal requirements for the attached power stage before using the MCU as the sole control component.
Recommended
Battery-Powered Embedded Instrument
MC908LJ12CFUER can fit low-cost battery-powered instruments where an 8-bit controller, serial interface, LCD support, and low-voltage detection are useful. The LVD feature can help the firmware monitor supply conditions, while POR provides defined startup behavior. The MCU can coordinate a sensor, local display, communications port, and user interface without requiring a separate display controller. Battery life, sleep currents, analog channels, regulator requirements, and operating voltage are not provided in the verified snippets, so power-budget decisions must use the complete manufacturer datasheet.
Recommended
Industrial Control Module
MC908LJ12CFUER is appropriate for small industrial or commercial control modules that need deterministic 8-bit firmware execution and multiple external connections. Its listed 32 I/O lines, LCD, LVD, POR, PWM, SPI, and IrSCI functions provide a broad control vocabulary for sensor inputs, actuator outputs, local status displays, and service communications. The 64-QFP package provides a larger pin count than many compact MCUs, but industrial qualification requirements are not established by the supplied data. Confirm operating-temperature limits, ESD requirements, isolation, and production lifecycle status before deployment.
Recommended
Recommended Products Summary
Engineering reference data for MC908LJ12CFUER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC98LJ12CFUE | MC908LJ12CFUE |
|---|---|---|---|
| Package | 64-QFP (14 x 14 mm) | 64-QFP | 64-QFP |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | HC08 / M68HC08, 8-bit | HC08LJ/LK, 8-bit | HC08, 8-bit |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz |
| Flash Program Memory | 12 KB (12K x 8) | 12 KB | 12 KB |
Key Differentiators
- HC08LJ/LK family positioning (vs MC68HC98LJ12CFUE)
- Documented connectivity set (vs MC908LJ12CFUE)
- Pin-count and package positioning (vs MC68HC98LJ12CFUE)
Design Notes
Do not substitute this MCU from a distributor summary alone. Confirm the exact package pinout, power rails, ground connections, LCD signals, IrSCI, SPI, PWM, reset, programming, and NC pins against the manufacturer datasheet. The supplied sources identify a 64-QFP package but do not provide a complete pin assignment, and one source reports a conflicting Flash-memory description. Resolve the ordering-code and memory-map discrepancy before PCB release.
Use the manufacturer 64-QFP land pattern and follow the package-specific assembly requirements for a 14 x 14 mm QFP. Place decoupling and support components close to the device power pins, route sensitive serial and display signals away from noisy switching nodes, and provide clean grounding for the MCU. Because exact pin names and electrical limits are not included in the verified data, the final layout must be checked against the exact datasheet and assembly drawing.
Before power-budgeting the MC908LJ12CFUER, confirm supply voltage, operating current, sleep behavior, and peripheral load from the manufacturer datasheet. The verified data confirms LVD and POR functions but does not provide their thresholds, timing, or current consumption. In a battery-powered product, use those confirmed limits to size the regulator, battery, and decoupling network, and include brownout testing in the firmware validation plan.
The 8 MHz MCU can support simple embedded control, but external LCD and serial interfaces still require deliberate signal routing and grounding. Keep SPI traces short where possible, provide proper pull-ups or pull-downs according to the bus specification, and isolate noisy actuator drive paths from display and communications signals. Confirm SPI mode, maximum clock rate, IrSCI levels, and LCD timing in the exact datasheet before selecting termination or protection components.
Compliance Information
The verified product description identifies the MCU as lead-free. RoHS, REACH, AEC-Q100, halogen-free, and conflict-minerals status are not established by the supplied manufacturer or distributor excerpts and remain unknown.
