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AT45DB041D-SU-SL955 Datasheet(PDF) 24 Page - ATMEL Corporation |
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AT45DB041D-SU-SL955 Datasheet(HTML) 24 Page - ATMEL Corporation |
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24 / 53 page  24 3595L–DFLASH–4/08 AT45DB041D 12. Deep Power-down After initial power-up, the device will default in standby mode. The Deep Power-down command allows the device to enter into the lowest power consumption mode. To enter the Deep Power- down mode, the CS pin must first be asserted. Once the CS pin has been asserted, an opcode of B9H 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 initiate the Deep Power-down operation. After the CS pin is de-asserted, the will device enter the Deep Power-down mode within the maximum t EDPD time. Once the device has entered the Deep Power-down mode, all instructions are ignored except for the Resume from Deep Power-down command. Figure 12-1. Deep Power-down 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. Figure 12-2. Resume from Deep Power-Down Command Opcode Deep Power-down B9H Opcode CS Each transition represents 8 bits SI Command Opcode Resume from Deep Power-down ABH Opcode CS Each transition represents 8 bits SI |
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