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W25Q16JVSSIQ Datasheet(PDF) 14 Page - Winbond |
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W25Q16JVSSIQ Datasheet(HTML) 14 Page - Winbond |
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14 / 75 page  W25Q16JV - 13 - Status Register Protect SRP, SRL) – Volatile/Non-Volatile Writable Three Status and Configuration Registers are provided for W25Q16JV. The Read Status Register-1/2/3 instructions can be used to provide status on the availability of the flash memory array, whether the device is write enabled or disabled, the state of write protection, Quad SPI setting, Security Register lock status, Erase/Program Suspend status, and output driver strength, The Write Status Register instruction can be used to configure the device write protection features, Quad SPI setting, Security Register OTP locks, output driver. Write access to the Status Register is controlled by the state of the non-volatile Status Register Protect bits (SRP, SRL), the Write Enable instruction, and during Standard/Dual SPI operations, the /WP pin. SRL SRP /WP Status Register Description 0 0 X Software Protection /WP pin has no control. The Status register can be written to after a Write Enable instruction, WEL=1. [Factory Default] 0 1 0 Hardware Protected When /WP pin is low the Status Register locked and cannot be written to. 0 1 1 Hardware Unprotected When /WP pin is high the Status register is unlocked and can be written to after a Write Enable instruction, WEL=1. 1 X X Power Supply Lock-Down Status Register is protected and cannot be written to again until the next power-down, power-up cycle.(1) 1 X X One Time Program(2) Status Register is permanently protected and cannot be written to. (enabled by adding prefix command AAh, 55h) 1. When SRL =1 , a power-down, power-up cycle will change SRL =0 state. 2. Please contact Winbond for details regarding the special instruction sequence. . |
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