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MCP413X датащи(PDF) 34 Page - Microchip Technology |
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MCP413X датащи(HTML) 34 Page - Microchip Technology |
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34 / 88 page ![]() MCP413X/415X/423X/425X DS22060B-page 34 © 2008 Microchip Technology Inc. 4.2.1.1 Status (STATUS) Register This register contains 5 status bits. These bits show the state of the Shutdown bit. The STATUS register can be accessed via the READ commands. Register 4-1 describes each STATUS register bit. The STATUS register is placed at Address 05h. REGISTER 4-1: STATUS REGISTER R-1 R-1 R-1 R-1 R-0 R-x R-x R-x R-x D8:D5 RESV RESV RESV SHDN RESV bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 8-5 D8:D5: Reserved. Forced to “1” bit 4-2 RESV: Reserved bit 1 SHDN: Hardware Shutdown pin Status bit (Refer to Section 5.3 “Shutdown” for further information) This bit indicates if the Hardware shutdown pin (SHDN) is low. A hardware shutdown disconnects the Terminal A and forces the wiper (Terminal W) to Terminal B (see Figure 5-2). While the device is in Hard- ware Shutdown (the SHDN pin is low) the serial interface is operational so the STATUS register may be read. 1 = MCP4XXX is in the Hardware Shutdown state 0 = MCP4XXX is NOT in the Hardware Shutdown state bit 0 RESV: Reserved |
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