MC68306 General Description
MC68306 Features
• Functional Integration on a Single Piece of Silicon
• EC000 Core-Identical to MC68EC000 Microprocessor
- Complete Code Compatibility with MC68000 and MC68EC000
- High Performance-2.4 MIPS
• Two-Channel Universal Synchronous/Asynchronous Receiver/Transmitter (a DUART)
- Baud Rate Generators
- Modem Control
- Identical to MC68681/MC2681
- Integrated 16-Bit Timer/Counter (useful for periodic interrupt generation, event counting, etc.)
• Dynamic Random Access Memory (DRAM) Controller
- Supports 16 Mbytes using 4M x 1 DRAMs, 64 Mbytes using 16M x 1 DRAMs (compatible with larger future-generation DRAMs)
- Provides 0 Wait State Interface to 80-ns DRAMs
- Programmable Refresh Timer Provides CAS-before-RAS Refresh
• Chip Selects
- Eight Programmable Chip Select Signals
- Provide Eight Separate 1-Mbyte Spaces or Four Separate 16-Mbyte Spaces Locatable anywhere within the 4-Gbyte Address Range of the EC000 Core
- Programmable Wait States
• Programmable Interrupt Controller
• Bus Watchdog Timer
• 24 Address Lines, 16 Data Lines
• 16.67-MHz, 5-V Operation
• 128-Pin Plastic Quad Flat Pack (QFP) or 132-Pin Plastic Quad Flat Pack (PQFP)
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