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GD9FS1G8F2ALG датащи(PDF) 15 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD9FS1G8F2ALG датащи(HTML) 15 Page - GigaDevice Semiconductor (Beijing) Inc. |
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15 / 55 page ![]() GD9Fx1GxF2A 15 7.1 Command Input Cycle Command Input bus operation is used to give a command to the memory device. Commands are accepted with Chip Enable low, Command Latch Enable High, Address Latch Enable low and Read Enable High and latched on the rising edge of Write Enable. Moreover for commands that starts a modify operation (write/erase) the Write Protect pin must be high. Command CLE CE# WE# R/B# IO0-7 ALE tDH tALH tALS tWP tCS tCH tCLH tCLS tWB Figure 9: Command Input Cycle figures 7.2 Address Input Cycle Address Input bus operation allows the insertion of the memory address. Addresses are accepted with Chip Enable low, Address Latch Enable High, Command Latch Enable low and Read Enable High and latched on the rising edge of Write Enable. Moreover for commands that starts a modify operation (write/erase) the Write Protect pin must be high. Row Add2 tALS CLE CE# WE# ALE I/Ox tCLS tCS tWC tWP tWH tALH Col. Add1 Col. Add2 Row Add1 tDH tCLH tCH tDS Figure 10: Address Input Cycle figures |
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