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25LC512-E/MF Datasheet(PDF) 7 Page - Microchip Technology |
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25LC512-E/MF Datasheet(HTML) 7 Page - Microchip Technology |
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7 / 36 page  2010 Microchip Technology Inc. DS22065C-page 7 25LC512 Read Sequence The device is selected by pulling CS low. The 8-bit READ instruction is transmitted to the 25LC512 fol- lowed by the 16-bit address. After the correct READ instruction and address are sent, the data stored in the memory at the selected address is shifted out on the SO pin. The data stored in the memory at the next address can be read sequentially by continuing to provide clock pulses. The internal Address Pointer is automatically incremented to the next higher address after each byte of data is shifted out. When the highest address is reached (FFFFh), the address counter rolls over to address 0000h allowing the read cycle to be continued indefinitely. The READ instruction is terminated by raising the CS pin (Figure 2-1). FIGURE 2-1: READ SEQUENCE SO SI SCK CS 0 23456789 10 11 21 22 23 24 25 26 27 28 29 30 31 1 01 0 0 0 0 01 15 14 13 12 210 765 43210 Instruction 16-bit Address Data Out High-Impedance |
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