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LE25FU206 Datasheet(PDF) 6 Page - Sanyo Semicon Device |
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LE25FU206 Datasheet(HTML) 6 Page - Sanyo Semicon Device |
6 / 21 page LE25FU206 No.A1191-6/21 Description of Commands and Their Operations "Table 2 Command Settings" provides a list and overview of the commands. A detailed description of the functions and operations corresponding to each command is presented below. 1. Read There are two read commands, the 4 bus cycle read command and 5 bus cycle read command. Consisting of the first through fourth bus cycles, the 4 bus cycle read command inputs the 24-bit addresses following (03h), and the data in the designated addresses is output synchronized to SCK. The data is output from SO on the falling clock edge of fourth bus cycle bit 0 as a reference. "Figure 5-a 4 Bus Read" shows the timing waveforms. Consisting of the first through fifth bus cycles, the 5 bus cycle read command inputs the 24-bit addresses and 8 dummy bits following (0Bh). The data is output from SO using the falling clock edge of fifth bus cycle bit 0 as a reference. "Figure 5-b 5 Bus Read" shows the timing waveforms. The only difference between these two commands is whether the dummy bits in the fifth bus cycle are input. When SCK is input continuously after the read command has been input and the data in the designated addresses has been output, the address is automatically incremented inside the device while SCK is being input, and the corresponding data is output in sequence. If the SCK input is continued after the internal address arrives at the highest address (3FFFFh), the internal address returns to the lowest address (00000h), and data output is continued. By setting the logic level of CS to high, the device is deselected, and the read cycle ends. While the device is deselected, the output pin SO is in a high-impedance state. Figure 5-a 4 Bus Read Figure 5-b 5 Bus Read N+2 N+1 N CS High Impedance DATA DATA DATA SCK SO SI 03h Add. Add. Add. 15 MSB MSB MSB 0 1 2 3 4 5 6 7 8 23 16 24 31 39 47 8CLK Mode0 Mode3 32 40 N+2 N+1 N CS High Impedance DATA DATA DATA SCK SO SI 0Bh Add. Add. Add. X 15 MSB MSB MSB 0 1 2 3 4 5 6 7 8 23 16 24 31 32 39 40 47 48 55 Mode3 Mode0 8CLK |
Similar Part No. - LE25FU206_11 |
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Similar Description - LE25FU206_11 |
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