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
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