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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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W97AH6KB датащи(PDF) 67 Page - Winbond |
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W97AH6KB датащи(HTML) 67 Page - Winbond |
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67 / 127 page  W97AH6KB / W97AH2KB Publication Release Date: May 15, 2014 Revision: A01-001 - 67 - 7.4.25.4 Read to Power-Down Entry T0 T1 T2 Tx Tx+1 Tx+2 Tx+9 Tx+3 Tx+4 Tx+5 Tx+6 Tx+7 Tx+8 Tx+9 Tx+8 Tx+7 Tx+6 Tx+5 Tx+4 Tx+3 Tx+2 Tx+1 Tx T2 T1 T0 RL RL tISCKE tISCKE RD RD Q Q Q Q Q Q Q Q Q Q Q Q Read operation starts with a read command and CKE should be kept HIGH until the end of burst operation. CKE should be kept HIGH until the end of burst operation. CKE [Cmd] CKE [Cmd] DQ DQ CK_c CK_t DQS_t DQS_c DQS_t DQS_c Note: CKE may be registered LOW RL + RU(tDQSCK(MAX)/tCK)+ BL/2 + 1 clock cycles after the clock on which the Read command is Registered. 7.4.25.5 Read with Auto Precharge to Power-Down Entry T0 T1 T2 Tx Tx+1 Tx+2 Tx+9 Tx+3 Tx+4 Tx+5 Tx+6 Tx+7 Tx+8 Q Q Q Q Q Q Q Q Q Q Q Q RDA RDA PRE PRE Tx+9 Tx+8 Tx+7 Tx+6 Tx+4 Tx+5 Tx+3 Tx+2 Tx+1 Tx T2 T1 T0 [Cmd] CKE DQ DQ CKE [Cmd] RL RL CKE should be kept HIGH until the end of burst operation. CKE should be kept HIGH until the end of burst operation. BL = 4 BL = 8 Start internal precharge Start internal precharge BL/2 With tRTP = 7.5ns & tRAS min satisfied BL/2 With tRTP = 7.5ns & tRAS min satisfied tISCKE tISCKE CK_c CK_t DQS_t DQS_c DQS_t DQS_c Note: CKE may be registered LOW RL + RU(tDQSCK(MAX)/tCK)+ BL/2 + 1 clock cycles after the clock on which the Read command is registered. |
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