MC68331CEH20

NXP  MC68331CEH20.  芯片, 32位微控制器, 20MHz, 132-PQFP

The 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.

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Modular architecture

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Central processing unit CPU32

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Upward object code compatible

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Virtual memory implementation

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Loop mode of instruction execution

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Table lookup and interpolate instruction

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Trace on change of flow

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Hardware breakpoint signal, background mode

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Fully static operation

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External bus support

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Programmable chip-select outputs

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System protection logic

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Watchdog timer, clock monitor and bus monitor

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Test/debug sub module for factory/user test and development

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Queued serial peripheral interface - 80-byte RAM, up to 16 automatic transfers

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Dual function I/O ports

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General-purpose timer

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Three input capture channels

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Four output compare channels

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2 Pulse-width modulation outputs