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H5GQ2H24AFR-R0C 数据表(PDF) 115 Page - Hynix Semiconductor |
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H5GQ2H24AFR-R0C 数据表(HTML) 115 Page - Hynix Semiconductor |
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115 / 172 page  This document is a general product description and is subject to change without notice. Hynix Semiconductor does not assume any responsability for use of circuits described. No patent licenses are implied. Rev. 1.2 /Nov. 2011 115 H5GQ2H24AFR 9. Reads or Writes listed in the Command/Action column include Reads or Writes with auto precharge enabled and Reads or Writes with auto precharge disabled. 10. A WRITE command may be applied after the completion of the READ burst Notes 1. This table applies when CKE#n‐1 was LOW and CKE#n is LOW (see <Link>Table 30) and after tXSNR has been met (if the previous state was self refresh). 2. WRITE in this table refers to both WOM/WOMA, WSM/WSMA and WDM/WDMA commands 3. This table describes alternate bank operation, except where noted (i.e., the current state is for bank n and the commands shown are those allowed to be issued to bank m, assuming that bank m is in such a state that the given command is allowable). Exceptions are covered in the notes below. 4. Current state definitions: Idle: The bank has been precharged, and tRP has been met. Row Active: A row in the bank has been activated, and tRCD has been met. No data bursts/accesses and no register accesses are in progress. Read: A READ burst has been initiated, with auto precharge disabled. Write: A WRITE burst has been initiated, with auto precharge disabled. Read with Auto Precharge Enabled: See following text Write with Auto Precharge Enabled: See following text Table 31 Truth Table – Current State Bank n – Command To Bank m CURRENT STATE CS# RAS# CAS# WE# COMMAND/ACTION NOTES Any H X X X DESELECT (NOP/continue previous operation) LH H H NO OPERATION (NOP/continue previous operation) Idle X X X X Any Command Otherwise Allowed to Bank m Row Activating, Active, or Precharging LL H H ACTIVE (select and activate row) LH L H READ (select column and start READ burst) 6 LH L L WRITE (select column and start WRITE burst) (WOM, WSM or WDM) 6 LL H L PRECHARGE Read (Auto Precharge Disabled) LL H H ACTIVE (select and activate row) LH L H READ (select column and start new READ burst) 6 LH L L WRITE (select column and start WRITE burst) (WOM, WSM or WDM) 6 LL H L PRECHARGE Write (Auto Precharge Disabled) LL H H ACTIVE (select and activate row) LH L H READ (select column and start READ burst) 6, 7 LH L L WRITE (select column and start new WRITE burst) (WOM, WSM or WDM) 6 LL H L PRECHARGE Read (With Auto Precharge) LL H H ACTIVE (select and activate row) LH L H READ (select column and start new READ burst) 6 LH L L WRITE (select column and start WRITE burst) (WOM, WSM or WDM) 6 LL H L PRECHARGE Write (With Auto Precharge) LL H H ACTIVE (select and activate row) LH L H READ (select column and start READ burst) 6 LH L L WRITE (select column and start new WRITE burst) (WOM, WSM or WDM) 6 LL H L PRECHARGE |
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