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GD25Q128CXIGX Datasheet(PDF) 44 Page - ELM Electronics |
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GD25Q128CXIGX Datasheet(HTML) 44 Page - ELM Electronics |
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44 / 69 page ![]() 44 Rev.1.2 69 - http://www.elm-tech.com GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash 7.26. Program/Erase Suspend (PES) (75H) The Program/Erase Suspend command “75H”, allows the system to interrupt a page program or sector/ block erase operation and then read data from any other sector or block. The Write Status Register command (01H/31H/11H) and Erase/Program Security Registers command (44H, 42H) and Erase commands (20H, 52H, D8H, C7H, 60H) and Page Program command (02H/32H) are not allowed during Program/Erase suspend. Program/Erase Suspend is valid only during the page program or sector/block erase operation. A maximum of time of “tsus” (See AC Characteristics) is required to suspend the program/erase operation. The Program/Erase Suspend command will be accepted by the device only if the SUS2/SUS1 bit in the Status Register equal to 0 and WIP bit equal to 1 while a Page Program or a Sector or Block Erase operation is on- going. If the SUS2/SUS1 bit equal to 1 or WIP bit equal to 0, the Suspend command will be ignored by the device. The WIP bit will be cleared from 1 to 0 within “tsus” and the SUS2/SUS1 bit will be set from 0 to 1 immediately after Program/Erase Suspend. A power-off during the suspend period will reset the device and release the suspend state. The command sequence is show in Figure29. Figure 29. Program/Erase Suspend Sequence Diagram Command 0 1 2 3 4 5 6 7 75H CS# SCLK SI SO High-Z tSUS Accept read command Figure 29a. Program/Erase Suspend Sequence Diagram (QPI) CS# SCLK IO0 IO1 IO2 IO3 0 1 Command 75H tSUS Accept Read |
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