MC68331CEH20

The MC68331CEH20 is a 32-bit Modular Microcontroller combines high-performance data manipulation capabilities with powerful peripheral subsystems. MCU is built up from standard modules that interface through a common inter-module bus. Standardization facilitates rapid development of devices tailored for specific applications. The MCU incorporates a 32-bit CPU, a system integration module, a general-purpose timer and a queued serial module. The MCU can either synthesize an internal clock signal from an external reference or use an external clock input directly. Operation with a 32.768kHz reference frequency is standard. The maximum system clock speed is 20.97MHz. Because MCU operation is fully static, register and memory contents are not affected by a loss of clock. High-density complementary metal-oxide semiconductor architecture makes the basic power consumption of the MCU low. The CPU32 instruction set includes a low-power stop command that efficiently implements this capability.

• Modular architecture
• Central processing unit (CPU32)
• Upward object code compatible
• Virtual memory implementation
• Loop mode of instruction execution
• Table lookup and interpolate instruction
• Trace on change of flow
• Hardware breakpoint signal, background mode
• Fully static operation
• External bus support
• Programmable chip-select outputs
• System protection logic
• Watchdog timer, clock monitor and bus monitor
• Test/debug sub module for factory/user test and development
• Queued serial peripheral interface - 80-byte RAM, up to 16 automatic transfers