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GD25LB32D Scheda tecnica(PDF) 20 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25LB32D Scheda tecnica(HTML) 20 Page - GigaDevice Semiconductor (Beijing) Inc. |
20 / 67 page 1.8V Uniform Sector Dual and Quad Serial Flash GD25LB32D 20 7.4. Read Status Register (RDSR) (05H or 35H or 15H) The Read Status Register (RDSR) command is for reading the Status Register. The Status Register may be read at any time, even while a Program, Erase or Write Status Register cycle is in progress. When one of these cycles is in progress, it is recommended to check the Write in Progress (WIP) bit before sending a new command to the device. It is also possible to read the Status Register continuously. For command code “05H” / “35H”, the SO will output Status Register bits S7~S0 / S15-S8. The command code “15H” only supports the QPI mode, the I/O0 will output Status Register S1-S0. (For 120MHz Frequency, the 15H will better than 05H to check the WIP bit) Figure5. Read Status Register Sequence Diagram Figure5a. Read Status Register Sequence Diagram (QPI) Figure5b. Read Status Register Sequence Diagram (QPI) (15H) CS# SCLK IO0 IO1 IO2 IO3 0 1 2 3 4 5 Command 05H or 35H 4 4 0 0 5 5 1 1 4 5 6 2 6 2 6 7 3 7 3 7 S7-S0 or S15-S8 out Command 0 1 2 3 4 5 6 7 05H or 35H CS# SCLK SI SO High-Z 8 9 10 11 12 13 14 15 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 MSB S7~S0 or S15~S8 out S7~S0 or S15~S8 out MSB CS# SCLK IO0 IO1 IO2 IO3 0 1 2 3 4 5 Command 15H S1 S1 S0 S0 S1-S0 out |
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