HM5259165B/HM5259805B/HM5259405B-75/A6
Read with auto precharge to Read command interval
1. Different bank: When some banks are in the active state, the second read command (another bank) is
executed. Even when the first read with auto-precharge is a burst read that is not yet finished, the data read by
the second command is valid. The internal auto-precharge of one bank starts at the next clock of the second
command.
Read with Auto Precharge to Read Command Interval (Different bank)
CLK
Command
BS
Dout
READ A
bank0
Read A
READ
bank3
Read
out A0
out A1
Note: Internal auto-precharge starts at the timing indicated by " ".
out B0 out B1
CAS Latency = 3
Burst Length = 4
2. Same bank: The consecutive read command (the same bank) is illegal.
Write with auto precharge to Write command interval
1. Different bank: When some banks are in the active state, the second write command (another bank) is
executed. In the case of burst writes, the second write command has priority. The internal auto-precharge of
one bank starts at the next clock of the second command .
Write with Auto Precharge to Write Command Interval (Different bank)
CLK
Command
BS
Din
WRIT A
WRIT
in A0
bank0
Write A
in A1
in B0
bank3
Write
in B1
in B2
Note: Internal auto-precharge starts at the timing indicated by " ".
in B3
Burst Length = 4
2. Same bank: The consecutive write command (the same bank) is illegal.
Data Sheet E0118H10
31