MC68LC302PU20CT

The MC68LC302PU20CT is a single-core microprocessor based on a static M68000 core, optimized for embedded multiprotocol applications. Operating at 20 MHz with a 5 V I/O domain, it supports an 8/16-bit system bus and integrates communication and system peripherals to simplify embedded system designs.

Designed for compact, height-restricted environments, the device is supplied in a 100-LQFP (14x14) package and targets low-power and integrated communications applications that benefit from on-chip DMA, timers, dual-port RAM and serial communications controllers.

Key Features

• Core and Performance  Static M68000 core supporting an 8/16-bit M68000 family system operating at 20 MHz for deterministic embedded processing.
• Memory and Controllers  On-chip 1152-byte dual-port RAM with programmable address mapping and integrated DRAM refresh controller for streamlined memory management.
• DMA and Interrupts  Independent DMA (IDMA) controller and an interrupt controller with two modes of operation to support efficient data movement and responsive interrupt handling.
• Serial Communications  Communications processor (RISC CPM) with two full-duplex serial communications controllers (SCCs) supporting HDLC/SDLC, UART, BISYNC, transparent modes and autobaud for versatile protocol support.
• Timers and Watchdog  Three timers including a watchdog timer and a periodic interrupt timer (PIT) for system timing, watchdog supervision and wake-up control.
• System and Clock  On-chip clock generator with output and an on-chip PLL enabling operation with 32 kHz or 4 MHz crystals; programmable chip-select logic with wait-state generation for glueless interfacing to EPROM, SRAM, Flash and EEPROM.
• System Integration  Four programmable chip-select lines, parallel I/O ports (some with interrupt capability) and programmable address mapping to reduce external glue logic.
• Package and Operating Range  100-LQFP (14x14) surface-mount package; specified operating temperature range 0 °C to 70 °C and 5 V I/O.
• Environmental Compliance  RoHS compliant.

Typical Applications

• Embedded Communications Modules  Use the integrated CPM and SCCs to implement protocol handling and serial connectivity in networked peripherals and terminal devices.
• Portable and Low-Power Devices  Low-power modes with programmable wake-up via PIT or input pins make the device suitable for battery-powered and portable applications.
• Height-Restricted Card Designs (PCMCIA-style)  Low-profile 100-LQFP package provides a compact footprint for designs with strict height and board-space constraints.
• Industrial Control and Data Acquisition  On-chip DMA, timers, watchdog and PIO support real-time control, data collection and deterministic response in embedded controllers.

Unique Advantages

• Highly integrated solution:  On-chip DMA, timers, dual-port RAM and serial controllers reduce BOM and simplify board layout.
• Flexible memory interfacing:  Glueless interface and four programmable chip-selects provide straightforward connections to EPROM, SRAM, Flash and EEPROM.
• Robust communications support:  Two full-duplex SCCs and a CPM RISC controller support multiple serial protocols (HDLC/SDLC, UART, BISYNC) for versatile endpoints.
• Compact, low-profile package:  100-LQFP (14x14) surface-mount packaging suits space- and height-constrained designs.
• Low-power operation:  Multiple low-power modes with wake-up options and on-chip clock/PLL options enable power-efficient system designs.
• Deterministic embedded processing:  Static M68000 core with 8/16-bit bus support provides predictable performance for real-time applications.

Why Choose MC68LC302PU20CT?

The MC68LC302PU20CT delivers a balance of on-chip integration and deterministic M68000 processing in a compact 100-LQFP package. Its combination of DMA, timers, dual-port RAM, programmable chip selects and integrated serial communications controllers makes it well suited for embedded communication modules, portable systems and industrial controllers where board space and system integration matter.

Backed by the MC68LC302 feature set and vendor product lineage, the device offers a practical path to reduce external components, simplify hardware design and support embedded applications that require flexible protocol handling and reliable system control.

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