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LE25FW403A Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LE25FW403A Datasheet(HTML) 5 Page - Sanyo Semicon Device |
5 / 18 page LE25FW403A No.A1229-5/18 Figure 4 Serial Output Timing Command Definition "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 Figure 5 shows the read timing waveforms. There are two read commands, the 4 bus cycle read and 5 bus cycle read. Consisting of the first through fourth bus cycles, the 4 bus cycle read inputs the 24-bit address following (03h) and the data in the designated address is output synchronized to SCK. The data is output on the falling clock edge of fourth bus cycle bit 0. 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 using the falling clock edge of fifth bus cycle bit 0. The only difference between these two commands is whether the dummy bits in the fifth bus cycle are input. While SCK is being input, the address is automatically incremented inside the device and the corresponding data is output in sequence. If the SCK input is continued after the data up to the highest address (7FFFFh) is output, 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 is in a high-impedance state. Figure 5: Read 4 Bus Read tHO tCHZ tCLZ SI tV CS SO SCK DATA VALID 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 5678 23 16 24 31 39 47 8CLK Mode0 Mode3 32 40 |
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