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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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25LC1024 датащи(PDF) 17 Page - Microchip Technology |
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25LC1024 датащи(HTML) 17 Page - Microchip Technology |
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17 / 32 page  © 2008 Microchip Technology Inc. DS22064C-page 17 25LC1024 2.11 DEEP POWER-DOWN MODE Deep Power-Down mode of the 25LC1024 is its lowest power consumption state. The device will not respond to any of the Read or Write commands while in Deep Power-Down mode, and therefore it can be used as an additional software write protection feature. The Deep Power-Down mode is entered by driving CS low, followed by the instruction code (Figure 2-11) onto the SI line, followed by driving CS high. If the CS pin is not driven high after the eighth bit of the instruction code has been given, the device will not execute Deep power-down. Once the CS line is driven high, there is a delay (TDP) before the current settles to its lowest consumption. All instructions given during Deep Power-Down mode are ignored except the Read Electronic Signature Command (RDID). The RDID command will release the device from Deep power-down and outputs the electronic signature on the SO pin, and then returns the device to Standby mode after delay (TREL) Deep Power-Down mode automatically releases at device power-down. Once power is restored to the device, it will power-up in the Standby mode. FIGURE 2-11: DEEP POWER-DOWN SEQUENCE SCK 0 2 34 56 7 1 SI High-Impedance SO CS 10 01 11 1 0 |
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