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MCP23017-E/ML датащи(PDF) 23 Page - Microchip Technology |
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MCP23017-E/ML датащи(HTML) 23 Page - Microchip Technology |
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23 / 48 page ![]() © 2007 Microchip Technology Inc. DS21952B-page 23 MCP23017/MCP23S17 1.6.11 OUTPUT LATCH REGISTER (OLAT) The OLAT register provides access to the output latches. A read from this register results in a read of the OLAT and not the port itself. A write to this register modifies the output latches that modifies the pins configured as outputs. REGISTER 1-11: OLAT – OUTPUT LATCH REGISTER 0 (ADDR 0x0A) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 OL7 OL6 OL5 OL4 OL3 OL2 OL1 OL0 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 7-0 OL7:OL0: These bits reflect the logic level on the output latch <7:0> 1 = Logic-high. 0 = Logic-low. |
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