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AT45DB011D Datasheet(PDF) 23 Page - List of Unclassifed Manufacturers |
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AT45DB011D Datasheet(HTML) 23 Page - List of Unclassifed Manufacturers |
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23 / 51 page  23 3639J–DFLASH–11/2012 AT45DB011D 12.1 Resume from Deep Power-down The Resume from Deep Power-down command takes the device out of the Deep Power-down mode and returns it to the normal standby mode. To Resume from Deep Power-down mode, the CS pin must first be asserted and an opcode of ABH command must be clocked in via input pin (SI). After the last bit of the command has been clocked in, the CS pin must be de-asserted to terminate the Deep Power-down mode. After the CS pin is de-asserted, the device will return to the normal standby mode within the maximum t RDPD time. The CS pin must remain high during the t RDPD time before the device can receive any commands. After resuming form Deep Power- down, the device will return to the normal standby mode. Table 12-2. Resume from Deep Power-down Figure 12-2. Resume from Deep Power-Down 13. “Power of 2” Binary Page Size Option “Power of 2” binary page size Configuration Register is a user-programmable nonvolatile regis- ter that allows the page size of the main memory to be configured for binary page size (256- bytes) or the DataFlash standard page size (264-bytes). The “power of 2” page size is a One- time Programmable (OTP) register and once the device is configured for “power of 2” page size, it cannot be reconfigured again. The devices are initially shipped with the page size set to 264-bytes. The user has the option of ordering binary page size (256-bytes) devices from the factory. For details, please refer to Section 26. ”Ordering Information” on page 46. For the binary “power of 2” page size to become effective, the following steps must be followed: 1. Program the one-time programmable configuration resister using opcode sequence 3DH, 2AH, 80H and A6H (please see Section 13.1). 2. Power cycle the device (i.e. power down and power up again). 3. The page for the binary page size can now be programmed. If the above steps are not followed to set the page size prior to page programming, incorrect data during a read operation may be encountered. Command Opcode Resume from Deep Power-down ABH Opcode CS Each transition represents 8 bits SI |
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