MC68HC98LJ12CFU - 8-Bit 8MHz 12KB MCU | Freescale
MPN: MC68HC98LJ12CFU ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.9483 | $32.95 |
| 10 | $32.9483 | $329.48 |
| 100 | $32.9483 | $3,294.83 |
| 500 | $32.9483 | $16,474.15 |
| 1,000 | $32.9483 | $32,948.30 |
MC68HC98LJ12CFU Overview
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one embedded-control component. The M68HC08 family uses the enhanced M68HC08 CPU08 core and a customer-specific integrated circuit design strategy. Within the broader hierarchy, this MCU belongs to the microcontroller, embedded processor, and semiconductor categories, where it executes firmware and supervises connected I/O in compact control systems.
The verified data establishes four headline characteristics: an 8-bit architecture, an 8 MHz operating frequency, 12 KB of flash memory, and a 64-QFP package measuring 14 mm by 14 mm. Its nonvolatile program memory allows firmware to be retained without continuous power, while the 8-bit CPU supports embedded-control workloads rather than high-performance computing. The 64-pin package also provides more external interface options than a small-lead-count controller.
NXP identifies the HC08LJ and HC08LK devices as members of the low-cost, high-performance M68HC08 family. That family description comes from the official NXP page for the closely identified MC68HC98LJ12CFUE product information. The provided evidence does not expose a complete technical datasheet, so detailed supply voltage, RAM capacity, peripheral list, timer configuration, ADC performance, and electrical limits are not asserted here.
Typical legacy embedded-control uses include appliance controllers, compact industrial modules, motor-related control, instrumentation, and system peripheral management. Engineers should select it only when an existing design already targets the CPU08 architecture, memory map, 8 MHz timing, 12 KB flash requirement, and 64-QFP footprint. Firmware and peripheral migration to a different MCU family is not automatically interchangeable.
The primary design consideration is software compatibility. Before replacement or redesign, verify the exact clock, reset behavior, memory organization, port multiplexing, interrupt vectors, peripherals, programming method, and pin assignments against the authoritative device documentation. Distributor search snippets can establish commercial identity and headline specifications, but they do not replace a complete manufacturer datasheet.
This page consolidates the verified supplier identity, architecture, frequency, flash capacity, package, official family description, and sourcing URLs. It also separates confirmed facts from missing technical data so procurement and engineering teams can assess this legacy MCU without relying on guessed electrical values or unsupported cross-references.
Drop-in alternatives for MC68HC98LJ12CFU — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC68HC98LJ12CFU (same form factor and footprint) — differing in Mounting Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC98LJ12CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC908LJ12CFUER
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC908LJ12CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC908LJ12CFU
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC98LJ12CFUE
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC98LJ12CFU Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller unit (MCU) |
| Manufacturer | Freescale Semiconductor |
| CPU Architecture | 8-bit M68HC08/CPU08 architecture |
| Maximum Stated Clock Frequency | 8 MHz |
| Flash Memory | 12 KB (12K x 8) |
| Package | 64-QFP (14 mm x 14 mm) |
| Pin Count | 64 pins |
| Mounting Type | Surface-mount QFP |
| Device Family | M68HC08 HC08, HC08LJ/LK family |
| CPU Core | Enhanced M68HC08 CPU08 |
| RoHS Status | Listed as ROHS by LCSC |
MC68HC98LJ12CFU 64-qfp (14 mm x 14 mm) Pin Configuration Guide
Pin configuration for MC68HC98LJ12CFU (64-qfp (14 mm 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 MC68HC98LJ12CFU.
Refer to the datasheet for full pin configuration.
Typical Applications
MC68HC98LJ12CFU is suitable for 6 applications: Legacy Appliance Control, Compact Industrial Control Module, Instrumentation Control, Motor and Relay Control, Embedded Peripheral Hub, Legacy Product Maintenance.
Legacy Appliance Control
The MC68HC98LJ12CFU fits a legacy appliance controller when the existing firmware depends on the M68HC08 CPU08 architecture and the board already uses the 64-QFP footprint. Its verified 8 MHz clock provides the execution basis for sequential control logic, while 12 KB of flash can retain the application program. The main benefit is compatibility with an established control platform rather than unusually high processing capacity. Before placement, confirm the complete supply-voltage range, RAM allocation, I/O multiplexing, timer resources, and pin functions from the exact manufacturer datasheet. Treat the 12 KB flash figure as a fixed design input: firmware growth, boot code, option data, and future revisions must all fit within the actual linker map and device configuration.
Recommended
Compact Industrial Control Module
MC68HC98LJ12CFU can serve as the embedded controller in a compact industrial module built around an existing CPU08 software stack. The verified 8 MHz operating point and 12 KB flash capacity suit deterministic supervisory logic, while the 64-QFP package provides a comparatively broad pin budget for external interfaces. The design should treat the MCU as a platform component: confirm available ports, serial interfaces, timers, interrupts, and analog functions in the authoritative datasheet. Industrial suitability also depends on temperature range, electrical immunity, qualification, and lifecycle status, none of which is fully established by the supplied search results. Prototype only after completing those checks.
Recommended
Instrumentation Control
The MC68HC98LJ12CFU is relevant to legacy instrumentation when a board requires the established M68HC08 instruction set, CPU08 timing assumptions, and a 64-QFP controller with 12 KB of program flash. It can coordinate measurement sequencing, status handling, and peripheral control if the required functions are confirmed in the full device documentation. The verified 8 MHz frequency does not by itself establish ADC accuracy, timer resolution, or measurement performance. Those values remain data-needed and must not be inferred. During instrument design, prioritize deterministic interrupt behavior, analog grounding, reference stability, and calibrated acquisition timing, then validate the complete firmware against the target board.
Recommended
Motor and Relay Control
MC68HC98LJ12CFU can be evaluated for a relay or basic motor-control board when the product is already designed around CPU08 software and the 64-QFP footprint. Its 8 MHz execution rate can coordinate state machines, protection logic, and actuator commands, but the supplied evidence does not verify PWM channels, capture timers, fault inputs, or analog setpoints. Those functions must be checked in the exact datasheet before assigning safety-relevant control. Keep high-current switching and inductive transients away from sensitive signal paths, and follow the manufacturer's grounding and decoupling recommendations. Firmware should include deterministic shutdown states, watchdog behavior appropriate to the verified device features, and production testing across worst-case load transitions.
Recommended
Embedded Peripheral Hub
The 64-QFP MC68HC98LJ12CFU is a candidate for a small peripheral hub that multiplexes digital I/O and coordinates serial or timing functions already supported by the CPU08 platform. The verified 12 KB flash allocation favors compact firmware rather than feature-heavy applications, and the 8 MHz clock makes instruction timing predictable within the CPU08 architecture. Exact I/O counts and peripheral functions are not present in the supplied evidence, so no pin or interface should be assigned yet. Obtain the complete pinout and peripheral matrix, then reserve programming and debug signals before placing the connector circuitry. This approach minimizes redesign risk when sustaining older embedded equipment with stable local sourcing.
Recommended
Legacy Product Maintenance
MC68HC98LJ12CFU is especially relevant to maintenance and continuation of products already built around an M68HC08 control board. Matching the verified 8-bit CPU, 8 MHz clock, and 12 KB flash helps engineers identify likely board-level intent, while the 64-QFP package limits mechanical redesign. However, a matching package and headline memory figure do not prove drop-in interchangeability. Compare the exact ordering code, every pin, memory organization, interrupt vector map, clock tree, peripheral behavior, and programming requirements. For production recovery, use controlled sourcing, inspect reclaimed devices as required, and perform hardware and firmware regression tests on every lot. This approach reduces obsolescence risk without making unsupported equivalence assumptions.
Recommended
Recommended Products Summary
Engineering reference data for MC68HC98LJ12CFU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC98LJ12CFUE | MC908LJ12CFUER | MC908LJ12CFUE | MC68HC908LJ12CFU |
|---|---|---|---|---|---|
| Brand | Freescale Semiconductor | NXP Semiconductors | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor |
| Package | 64-QFP (14 mm x 14 mm) | 64-QFP (14 mm x 14 mm) | 64-QFP (14 mm x 14 mm) | 64-QFP (14 mm x 14 mm) | 64-QFP (14 mm x 14 mm) |
| Product Family | M68HC08 HC08 | HC08LJ/LK | M68HC08 | M68HC08 | M68HC08 |
Key Differentiators
- Exact target identity (vs MC68HC98LJ12CFUE)
- Verified commercial reference (vs MC908LJ12CFUER)
- Consistent package and memory headline (vs MC908LJ12CFUE)
- Family-level architecture context (vs MC68HC908LJ12CFU)
Design Notes
Do not treat a 64-QFP outline or a 12 KB flash headline as sufficient proof of interchangeability. Compare the exact ordering information, complete pin table, alternate-function mapping, reset and clock pins, programming interface, memory organization, interrupt vectors, peripheral registers, and absolute maximum ratings. MC68HC98LJ12CFUE and MC908LJ12CFUER appear closely related in search results, but manufacturer confirmation is still required before either replaces the target on an operating board.
Obtain the exact supply-voltage and decoupling requirements before laying out the power network. The verified sources establish device identity and memory but do not provide operating voltage, current consumption, absolute maximum ratings, or pin states. Follow the complete manufacturer datasheet for supply sequencing, reset behavior, input thresholds, and output-drive limits. Do not infer a 5 V or 3.3 V rail from legacy MCU naming, and do not use a generic bulk capacitor to compensate for missing local-decoupling data.
Reserve all programming, reset, clock, and debug-related pins before assigning board functions, even though the supplied evidence does not identify their exact pin numbers. Confirm the 64-QFP 14 mm by 14 mm mechanical drawing, pin pitch, exposed-pad status, solder-mask clearance, and recommended land pattern from the authoritative package document. For maintenance boards, compare continuity and pin-1 orientation carefully; a package family label alone cannot establish footprint compatibility.
Thermal design cannot be finalized from the supplied search snippets because power dissipation, junction temperature, package thermal resistance, and ambient-temperature limits are absent. First establish worst-case clock, I/O, and analog operating conditions from the exact datasheet, then calculate dissipation using those verified values and apply the package's documented thermal data. Use a qualified PCB assembly and inspect exposed thermal features only if the manufacturer package drawing shows them; do not assume this 64-QFP has an exposed pad.
Preserve the CPU08 platform's expected clock, reset, and bus behavior during any schematic or PCB revision. Route sensitive inputs away from switching nodes and noisy digital returns, follow the authoritative decoupling topology, and keep external storage or peripheral buses within their verified timing limits. Because no complete pinout or peripheral timing table was supplied, signal assignment must begin only after downloading and reviewing the exact MC68HC98LJ12CFU documentation.
Compliance Information
LCSC describes the MC68HC98LJ12CFU listing as ROHS. The supplied evidence does not establish REACH, halogen-free, conflict-minerals, or automotive qualification status.
