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H55S2562JFR-60M Datasheet(PDF) 25 Page - Hynix Semiconductor |
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H55S2562JFR-60M Datasheet(HTML) 25 Page - Hynix Semiconductor |
25 / 52 page Rev 1.1 / July. 2009 25 11 256Mbit (16Mx16bit) Mobile SDR H55S2562JFR Series CKE Enable(CKE) Truth TABLE (Sheet 2 of 2) Note: 1. For the given current state CKE must be low in the previous cycle. 2. When CKE has a low to high transition, the clock and other inputs are re-enabled asynchronously. When exiting power down mode, a NOP (or Device Deselect) command is required on the first positive edge of clock after CKE goes high. 3. The address inputs depend on the command that is issued. 4. The Precharge Power Down mode, the Self Refresh mode, and the Mode Register Set can only be entered from the all banks idle state. 5. When CKE has a low to high transition, the clock and other inputs are re-enabled asynchronously. When exiting deep power down mode, a NOP (or Device Deselect) command is required on the first positive edge of clock after CKE goes high and is maintained for a minimum 200usec. Current State CKE Command Action Notes Previous Cycle Current Cycle CS RAS CAS WE BA0, BA1 A max- A0 All Banks Idle H H H X X X Refer to the idle State section of the Current State Truth Table 3 H H L H X X 3 H H L L H X 3 H H L L L H X X Auto Refresh H H L L L L OP CODE Mode Register Set 4 H L H X X X Refer to the idle State section of the Current State Truth Table 3 H L L H X X 3 H L L L H X 3 H L L L L H X X Entry Self Refresh 4 H L L L L L OP CODE Mode Register Set L X X X X X X X Power Down 4 Any State other than listed above H H X X X X X X Refer to operations of the Current State Truth Table H L X X X X X X Begin Clock Suspend next cycle L H X X X X X X Exit Clock Suspend next cycle L L X X X X X X Maintain Clock Suspend |
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