W641GG2JB Datasheet, PDF (84/109 Pages) Winbond – 1-Gbit GDDR3 Graphics SDRAM

W641GG2JB
1-Gbit GDDR3 Graphics SDRAM
6.18 Precharge (PRE/PREALL)
The Precharge command is used to deactivate the open row in a particular bank (PRE) or the open rows in all banks (PREALL).
The bank(s) will enter the idle state and be available again for a new row access after the time t_RP. A8/AP sampled with the PRE
command determines whether one or all banks are to be precharged. For PRE commands BA0, BA1 and BA2 select the bank. For
PREALL inputs BA0, BA1 and BA2 are ―Don‘t Care‖. The PRE/PREALL command may not be given unless the t_RAS requirement is
met for the selected bank (PRE), or for all banks within one rank (PREALL).
6.18.1 Precharge Command
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Publication Release Date: Apr, 22, 2011
Revision A01-002