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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IS25LE512MG-RMLA2:PTY датащи(PDF) 167 Page - Integrated Silicon Solution, Inc |
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IS25LE512MG-RMLA2:PTY датащи(HTML) 167 Page - Integrated Silicon Solution, Inc |
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167 / 194 page  IS25LE512MG IS25WE512MG Integrated Silicon Solution, Inc.- www.issi.com 167 Rev. A6 10/02/2025 8.65 GANG SECTOR/BLOCK UNLOCK OPERATION (GBUN, 98h) The Gang Sector/Block Unlock (GBUN) instruction provides a quick method to clear all DYB (Dynamic Protection Bit) bits to “1” at once. Before the GBUN (98h) command can be accepted by the device, a Write Enable (WREN) command must be issued and decoded by the device, which sets the Write Enable Latch (WEL) in the Status Register to enable any write operations. The sequence of issuing GBUN instruction is: drive CE# low → send GBUN instruction code → drive CE# high. The instruction code will be shifted into the device on the rising edge of SCK. The GBUN command is accepted in both SPI and QPI mode. The CE# must go high exactly at the byte boundary, otherwise, the instruction will be ignored and not be executed. While the GBUN operation is in progress, the Status Register or Extended Read Register may be read to check the value of the Write In Progress (WIP) bit. The WIP bit is “1” during the GBUN operation, and is “0” when it is completed. It takes 70us (typ) to complete GBUN operation. Figure 8.145 Gang Sector/Block Unlock Sequence In SPI Mode Instruction = 98h CE# SCK SI 0 1 2 3 4 5 6 7 Mode 3 Mode 0 SO High Impedance Figure 8.146 Gang Sector/Block Unlock Sequence In QPI Mode 98h CE# SCK IO[3:0] 0 1 Mode 3 Mode 0 |
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