IS43R16320B
IC43R16320B
Command Intervals
A Read command to the consecutive Read command Interval
Destination row of the
consecutive read command
Bank
address
Row address State
Operation
The consecutive read can be performed after an interval of no less than 1 cycle to
interrupt the preceding read operation.
1. Same
Same
Different
Any
ACTIVE
Precharge the bank to interrupt the preceding read operation. tRP after the
precharge command, issue the ACT command. tRCD after the ACT command, the
consecutive read command can be issued. See ‘A read command to the
consecutive precharge interval’ section.
2. Same
—
The consecutive read can be performed after an interval of no less than 1 cycle to
interrupt the preceding read operation.
3. Different
ACTIVE
IDLE
Precharge the bank without interrupting the preceding read operation. tRP after
the precharge command, issue the ACT command. tRCD after the ACT command,
the consecutive read command can be issued.
t0
t4
t5
t6
t7
t8
t9
t10
t11
CK
/CK
Command
NOP
ACT
Row
NOP
READ
READ
Column A Column B
Address
BA
out out out out out out
A0 A1 B0 B1 B2 B3
DQ
Column = A Column = B
Read Read
Column = A
Dout
Column = B
Dout
DQS
CL = 3
BL = 4
Bank0
Bank0
Active
READ to READ Command Interval (same ROW address in the same bank)
Integrated Silicon Solution, Inc. — www.issi.com
29
Rev. 00B
06/11/08
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
