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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TC1920 데이터시트(PDF) 21 Page - Infineon Technologies AG |
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TC1920 데이터시트(HTML) 21 Page - Infineon Technologies AG |
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21 / 78 page  TC1920 Preliminary Data Sheet 17 V 1.3, 2003-10 System Control Unit (SCU) The System Control Unit of the TC1920 basically handles all system control tasks. All these system functions are tightly coupled and therefore they are handled physically by one unit, the SCU. The system tasks of the SCU are: • Clock Generation and Control • Reset control • Power Management control and wake-up • Watchdog timer • Trace port control • Device identification • Standby SRAM control • External interrupt capability (8 sources) System timer (STM) The System Timer is designed for global system timing applications requiring both high precision and long range. It is used by the CPU for software operating system issues. Features: • Free-running 56-bit counter • All 56 bits can be read synchronously • Different 32-bit portions of the 56-bit counter can be read synchronously • Driven by clock, f STM (normally identical with the system clock). • Counting begins at power-on reset • Continuous operation is not affected by any reset condition except power-on reset |
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