EDD5104ABTA, EDD5108ABTA
A Read command to the consecutive Write command interval with the BST command
Destination row of the consecutive write
command
Bank
address
Row address State
Operation
1. Same
Same
ACTIVE
Issue the BST command. tBSTW (≥ tBSTZ) after the BST command, the
consecutive write command can be issued.
2. Same
Different
—
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 write command can be issued. See ‘A read command to the
consecutive precharge interval’ section.
3. Different
Any
ACTIVE
Issue the BST command. tBSTW (≥ tBSTZ) after the BST command, the
consecutive write command can be issued.
IDLE
Precharge the bank independently of the preceding read operation. tRP after the
precharge command, issue the ACT command. tRCD after the ACT command, the
consecutive write command can be issued.
t0
t1
t2
t3
t4
t5
t6
t7
t8
CK
/CK
Command
READ
BST
NOP
WRIT
tBSTW (≥ tBSTZ)
NOP
DM
DQ
DQS
High-Z
tBSTZ (= CL)
out0 out1
in0 in1 in2 in3
OUTPUT
INPUT
READ to WRITE Command Interval
BL = 4
CL = 2
Preliminary Data Sheet E0237E30 (Ver. 3.0)
32