hm5216165 Elpida Memory, Inc., hm5216165 Datasheet - Page 13

• Manufacturer Part Number: hm5216165
• Description: 16 M Lvttl Interface Sdram 512-kword ? 16-bit ? 2-bank
• Manufacturer: Elpida Memory, Inc.

HM5216165 Series
From [READ with AUTO PRECHARGE]
To [DESL], [NOP]: These commands continue read operations until the burst operation is completed, and
the synchronous DRAM then enters precharge mode.
To [ACTV]: This command makes other banks bank active. (However, an interval of t
is required.)
RRD
Attempting to make the currently active bank active results in an illegal command.
From [WRITE]
To [DESL], [NOP]: These commands continue write operations until the burst operation is completed.
To [BST]: This command stops a full-page burst.
To [READ], [READ A]: These commands stop a burst and start a read cycle.
To [WRIT], [WRIT A]: These commands stop a burst and start the next write cycle.
To [ACTV]: This command makes the other bank active. (However, an interval of t
is required.)
RRD
Attempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]: These commands stop burst write and the synchronous DRAM then enters precharge
mode.
From [WRITE with AUTO-PRECHARGE]
To [DESL], [NOP]: These commands continue write operations until the burst is completed, and the
synchronous DRAM enters precharge mode.
To [ACTV]: This command makes the other bank active. (However, an interval of t
is required.)
RC
Attempting to make the currently active bank active results in an illegal command.
From [REFRESH]
To [DESL], [NOP], [BST]: After an auto-refresh cycle (after t
), the synchronous DRAM automatically
RC
enters the IDLE state.
Data Sheet E0167H10
13