IS43R16320B
IC43R16320B
A Read command to the consecutive Precharge command interval (same bank): To output all data
To complete a burst read operation and get a burst length of data, the consecutive precharge command must be
issued tRPD (= BL/ 2 cycles) after the read command is issued.
t0
t1
t2
t3
t4
t5
t6
t7
t8
CK
/CK
PRE/
PALL
Command
DQ
NOP
NOP
NOP
READ
out0 out1 out2 out3
DQS
tRPD = BL/2
READ to PRECHARGE Command Interval (same bank): To output all data (CL = 3, BL = 4)
READ to PRECHARGE Command Interval (same bank): To stop output data
A burst data output can be interrupted with a precharge command. All DQ pins and DQS pins become High-Z tHZP
(= CL) after the precharge command.
t0
t1
t2
t3
t4
t5
t6
t7
t8
CK
/CK
PRE/PALL
Command
DQ
NOP
NOP
READ
CL = 3
High-Z
High-Z
out0 out1
DQS
tHZP
READ to PRECHARGE Command Interval (same bank): To stop output data (CL = 3, BL = 2, 4, 8)
Integrated Silicon Solution, Inc. — www.issi.com
37
Rev. 00B
06/11/08
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
