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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT85F2270 датащи(PDF) 82 Page - Holtek Semiconductor Inc |
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HT85F2270 датащи(HTML) 82 Page - Holtek Semiconductor Inc |
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82 / 226 page  Rev. 1.00 8� of ��6 �a� 1�� �01� Standard 8051 8-Bit Flash MCU HT85F2260/HT85F2270/HT85F2280 Missing Clock Detect Reset The device provides a missing clock detection function which can generate a reset in the absence of a system clock. The missing clock detect reset function is enabled by setting the MCD bit in the T2CON1 register. If the MCD bit is set high and if there is a system clock missing event happens, then the Missing Clock Detect reset will be generated. The MCDF bit in the RSTSRC register is used to indicate a missing clock reset source. T2CON1 Register SFR Address: FEh Bit 7 6 5 4 3 2 1 0 Label — — — �CD T�OI T�OE — — R/W — — — R/W R/W R/W — — POR — — — 0 1 0 — — Bit 7~5 Unimplemented, read as “0” Bit 4 MCD: Missing Clock Detection Reset control 0: Disable 1: Enable Note that this bit should be cleared manually before entering the Power-Down mode, or it will cause a “Missing Clock Reset” after entering the Power-Down mode. Bit 3 T2OI: Timer 2 output initial state Described elsewhere Bit 2 T2OE: Timer 2 output enable bit Described elsewhere Bit 1~0 Unimplemented, read as “0” |
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