MC68HC908LJ24CPB-FR 8-Bit 8MHz 24KB MCU | NXP
MPN: MC68HC908LJ24CPB-FR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.1473 | $1.15 |
| 10 | $1.1473 | $11.47 |
| 100 | $1.1473 | $114.73 |
| 500 | $1.1473 | $573.65 |
| 1,000 | $1.1473 | $1,147.30 |
MC68HC908LJ24CPB-FR Overview
The MC68HC908LJ24CPB-FR combines a CPU08 processor, 24 KB of Flash program memory, on-chip oscillator connections, and integrated peripheral functions in one microcontroller package. The verified product listing identifies the device as an 8-bit microcontroller operating at 8 MHz, with 24K x 8 Flash memory and a 64-LQFP package. The family is designed for embedded control, appliance interfaces, motor-related control, measurement, and other systems requiring deterministic low-cost integration.
An MCU is a semiconductor that combines a processor core, memory, and peripherals on one integrated circuit. In the hierarchy, MCU is a microcontroller, a semiconductor, and an embedded processing device. The M68HC08 family provides a simple 8-bit execution environment rather than a high-performance 32-bit or RISC architecture. Its integrated Flash memory supports firmware storage, while on-chip peripherals reduce system-level component count compared with a discrete processor design.
The verified NXP datasheet describes the MC68HC908LJ24 as part of a family based on the customer-specified integrated circuit design strategy. Its CPU08 core and range of memory sizes and package options make the family suitable for embedded products where cost, compactness, and peripheral integration are important. The 8 MHz operating speed provides a straightforward control platform for digital sequencing, sensor interfaces, and supervisory functions.
Typical uses include industrial equipment, consumer appliances, motor-control modules, building controls, and compact embedded instruments. A designer should select the MCU according to the complete family datasheet, peripheral requirements, memory needs, pin availability, oscillator arrangement, and operating conditions. The -FR ordering suffix identifies the exact NXP ordering configuration, while CPB identifies the 64-LQFP package variant.
For a new PCB, the package footprint, pin assignment, power requirements, decoupling, clock implementation, programming method, and unused-pin treatment must be verified in the manufacturer datasheet. For an existing design, do not substitute the MCU solely by matching the device name; confirm pin compatibility, voltage limits, timing, memory organization, peripheral functions, and software support.
This product data consolidates the verified NXP family description, distributor identification, package information, memory and clock details, sourcing links, and practical replacement guidance. It is intended to help engineers locate the correct MCU and assess whether a proposed alternative is truly suitable for an existing design.
Drop-in alternatives for MC68HC908LJ24CPB-FR — 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 MC68HC908LJ24CPB-FR (same form factor and footprint) — differing in Package, Series, Lifecycle Status, Data Bus Width, Manufacturer.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC908LJ24VPB
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC908LJ24MPB
✅ Drop-In📋 Reference alternative (not in catalog)
MC908JL3ECDWE
✅ Drop-In✓ In Stock
$6.0657 / Unit
View Datasheet →MC908GZ16CFAE
✅ Drop-In✓ In Stock
$7.25 / Unit
View Datasheet →MC908AP32ACFBE
✅ Drop-In✓ In Stock
$29.663 / Unit
View Datasheet →MC68HC908LJ24CPB-FR Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller |
| CPU Architecture | Enhanced M68HC08 CPU08 |
| Maximum Clock Frequency | 8 MHz |
| Flash Memory | 24 KB (24K x 8) |
| Program Memory Type | Flash |
| Manufacturer | NXP Semiconductors |
| Package | 64-LQFP, 10 mm x 10 mm |
| Mounting Type | Surface Mount |
| Pin Count | 64 pins |
| Family | M68HC08 |
| Series | MC68HC908LJ24 |
| On-Chip Oscillator Connections | OSC1 and OSC2 |
| OSC1 Input Feature | Schmitt trigger and spike filter |
| PLL | 32 kHz phase-lock loop |
| Flash Programming Feature | Second-generation Flash memory |
| Nominal Operating Class | Low-cost, high-performance embedded control |
| Data Bus Width | 8-bit |
MC68HC908LJ24CPB-FR 64-lqfp, 10 mm x 10 mm Pin Configuration Guide
Pin configuration for MC68HC908LJ24CPB-FR (64-lqfp, 10 mm x 10 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 MC68HC908LJ24CPB-FR.
Refer to the datasheet for full pin configuration.
Typical Applications
MC68HC908LJ24CPB-FR is suitable for 6 applications: Industrial Equipment Control, Appliance Control, Motor and Actuator Control, Building and Environmental Control, Measurement and Instrumentation, Consumer Product Electronics.
Industrial Equipment Control
The MC68HC908LJ24CPB-FR fits compact industrial equipment that needs deterministic 8-bit control, local logic, and embedded firmware. Its verified 8 MHz CPU08 core and 24 KB Flash provide a straightforward platform for sequencing motors, reading inputs, driving indicators, and managing operating modes. The integrated MCU architecture can reduce the number of external logic components in a control board. The designer should confirm the required I/O, timer, analog, communication, and supply functions in the complete NXP datasheet before committing the 64-LQFP layout.
Recommended
Appliance Control
The MC68HC908LJ24CPB-FR is suitable for appliance controllers that coordinate user inputs, motors, displays, and safety-related sequencing in a compact embedded design. Its 8-bit CPU08 architecture is appropriate for fixed control tasks, while 24 KB of Flash provides room for firmware and parameter handling. The 64-LQFP package supports dense board layouts when required by the product. Validation must include motor-driver isolation, temperature behavior, reset behavior, and the exact operating-voltage limits from the manufacturer documentation.
Recommended
Motor and Actuator Control
The MC68HC908LJ24CPB-FR can serve as the supervisory controller in a motor or actuator subsystem, using its 8 MHz CPU08 core to manage commands, interlocks, fault states, and timing. Its Flash memory is useful for storing motion profiles or control constants, while the integrated MCU reduces discrete control overhead. Actual motor performance depends on external power stages, current sensing, protection, and the device's verified timer and I/O capabilities. The application should not infer those functions without checking the complete LJ24 datasheet.
Recommended
Building and Environmental Control
The MC68HC908LJ24CPB-FR is well suited to compact building-control nodes that monitor inputs and operate relays, indicators, or other controlled loads. The 8-bit architecture and 24 KB Flash are appropriate for local embedded logic, while the 64-LQFP package permits integration with communication and signal-conditioning circuitry. For environmental monitoring, verify the required sensor interfaces, analog functions, communication peripherals, and operating-temperature range against the datasheet. Firmware should include debounce, fail-safe states, and power-loss recovery behavior.
Recommended
Measurement and Instrumentation
The MC68HC908LJ24CPB-FR can form the control core of a compact measurement instrument when the design requires local display management, sensor conditioning, calibration storage, and communication. Its 24 KB Flash can hold firmware and constants, and the 8 MHz CPU08 provides predictable execution for control routines. The suitability depends on the available timers, serial interfaces, ADC or comparator functions, and analog I/O. The verified source data does not specify those peripherals, so the exact datasheet must be checked before selecting the MCU for precision measurement.
Recommended
Consumer Product Electronics
The MC68HC908LJ24CPB-FR can support compact consumer-product controllers that need low-cost local logic, non-real-time user-interface handling, and firmware storage in 24 KB of Flash. It may be used in auxiliary control blocks rather than as a high-performance application processor. The 64-LQFP footprint is useful when the system requires a moderate pin count, but unused pins and supply distribution must follow the package drawing. Before design release, validate EMC behavior, programming access, reset behavior, and all peripheral requirements against the manufacturer documentation.
Recommended
Recommended Products Summary
Engineering reference data for MC68HC908LJ24CPB-FR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC908LJ24VPB | MC68HC908LJ24MPB | MC908JL3ECDWE | MC908GZ16CFAE | MC908AP32ACFBE |
|---|---|---|---|---|---|---|
| Manufacturer | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Freescale Semiconductor | Freescale Semiconductor | Freescale Semiconductor |
Key Differentiators
- Verified 8 MHz, 24 KB Flash configuration (vs MC68HC908LJ24VPB)
- Explicit 64-LQFP 10 x 10 mm package identification (vs MC68HC908LJ24MPB)
- Family oscillator and PLL resources (vs MC908JL3ECDWE)
- Exact M68HC08 CPU08 positioning (vs MC908GZ16CFAE)
Design Notes
Start the layout from the official NXP 64-LQFP package drawing and pin table rather than from a distributor footprint. Confirm pin 1 orientation, power-pin distribution, oscillator placement, programming access, and every unused signal. Because the supplied data does not include the complete pinout or exposed-pad details, preserve the option for datasheet-driven corrections before routing.
The verified NXP material identifies OSC1 and OSC2 as the on-chip oscillator connections and states that OSC1 includes a Schmitt trigger and spike filter for improved EMC performance. Keep oscillator traces short, route them away from switching nodes and high-current paths, and follow the datasheet grounding arrangement. Validate crystal, ceramic-resonator, or external-clock options against the exact voltage and frequency limits before fabrication.
Use the complete NXP datasheet to define the decoupling network, supply pins, voltage tolerances, startup behavior, and reset requirements. The verified data confirms an 8-bit MCU and 24 KB Flash but does not provide operating voltage limits, so do not select capacitors or power rails from assumptions. Check the 64-LQFP footprint and power distribution after all electrical requirements are known.
Build firmware around the CPU08 instruction set, memory map, interrupt behavior, oscillator setup, and the exact LJ24 peripheral set. The 24 KB Flash figure is verified, but it does not establish EEPROM, RAM, bootloader, or programming-tool capacity. Review the linker map and the exact datasheet peripheral tables before assuming that a related LJ24 variant uses identical software or memory organization.
Compliance Information
The supplied verified sources do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Confirm current compliance and material declarations with NXP or the authorized distributor.