Datasheet

AS4C16M32MD1
Confidential 21 Rev. 1.0/July 2014
For Read with AP, the pre-charge period is defined as if the same burst was executed with Auto Precharge
disabled and then followed with the earliest possible PRECHARGE command that still accesses all the data
in the burst. For Write with Auto pre-charge, the pre-charge period begins when tWR ends, with tWR
measured as if Auto Precharge was disabled. The access period starts with registration of the command
and ends where the pre-charge period (or tRP) begins. During the pre-charge period, of the Read with
Auto Precharge enabled or Write with Auto Precharge enabled states, ACTIVE, PRECHARGE, READ, and
WRITE commands to the other bank may be applied; during the access period, only ACTIVE and
PRECHARGE commands to the other banks may be applied. In either case, all other related limitations
apply (e.g. contention between READ data and WRITE data must be avoided).
6. AUTO REFRESH, SELF REFRESH, and MODE REGISTER SET commands may only be issued when all bank
are idle.
7. A BURST TERMINATE command cannot be issued to another bank; it applies to the bank represented by
the current state only.
8. READs or WRITEs listed in the Command column include READs and WRITEs with Auto Precharge enabled
and READs and WRITEs with Auto Precharge disabled.
9. Requires appropriate DM masking.
10. A WRITE command may be applied after the completion of data output, otherwise a BURST TERMINATE
command must be issued to end the READ prior to asserting a WRITE command.