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24LC00-E/P 数据表(PDF) 7 Page - Microchip Technology |
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24LC00-E/P 数据表(HTML) 7 Page - Microchip Technology |
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7 / 34 page ![]() 1996-2011 Microchip Technology Inc. DS21178H-page 7 24AA00/24LC00/24C00 5.0 DEVICE ADDRESSING After generating a Start condition, the bus master transmits a control byte consisting of a slave address and a Read/Write bit that indicates what type of operation is to be performed. The slave address for the 24XX00 consists of a 4-bit device code ‘1010’ followed by three “don’t care” bits. The last bit of the control byte determines the operation to be performed. When set to a one a read operation is selected, and when set to a zero a write operation is selected (Figure 5-1). The 24XX00 monitors the bus for its corresponding slave address all the time. It generates an Acknowledge bit if the slave address was true and it is not in a programming mode. FIGURE 5-1: CONTROL BYTE FORMAT 10 1 0 x x x SACK R/W Device Select Bits Don’t Care Bits Slave Address Acknowledge Bit Start Bit Read/Write Bit |
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