HYB18L256160B QIMONDA [Qimonda AG], HYB18L256160B Datasheet - Page 46

• Manufacturer Part Number: HYB18L256160B
• Description: DRAMs for Mobile Applications 256-Mbit Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

1) This table applies when CKEn-1 was HIGH and CKEn is HIGH and after
2) This table describes alternate bank operation, except where noted, i.e., the current state is for bank n and the commands shown are those
3) Current state definitions, see
4) AUTO REFRESH, SELF REFRESH and MODE REGISTER SET commands may only be issued when all banks are idle.
5) A BURST TERMINATE command cannot be issued to another bank; it applies to the bank represented by the current state only.
6) All states and sequences not shown are illegal or reserved.
7) READs or WRITEs listed in the Command/Action column include READs or WRITEs with Auto Precharge enabled and READs or WRITEs
8) Requires appropriate DQM masking.
9) Concurrent Auto Precharge: bank n will start precharging when its burst has been interrupted by a READ or WRITE command to bank m.
Rev. 1.73, 2006-09
01302004-CZ2R-J9SE
Current State
Any
Idle
Row Activating,
Active, or
Precharging
Read (Auto-
Precharge
Disabled)
Write (Auto-
Precharge
Disabled)
Read
(with Auto-
Precharge)
Write
(with Auto-
Precharge)
allowed to be issued to bank m (assuming that bank m is in such a state that the given command is allowable). Exceptions are covered in
the notes below.
with Auto Precharge disabled.
H
L
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CS
X
H
X
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
RAS CAS
Table 21
X
H
X
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
X
H
X
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
WE
Command / Action
DESELECT (NOP / continue previous operation)
NO OPERATION (NOP / continue previous operation)
Any command otherwise allowed to bank n
ACTIVE (select and activate row)
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (deactivate row in bank or banks)
ACTIVE (select and activate row)
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (deactivate row in bank or banks)
ACTIVE (select and activate row)
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (deactivate row in bank or banks)
ACTIVE (select and activate row)
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (deactivate row in bank or banks)
ACTIVE (select and activate row)
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (deactivate row in bank or banks)
Current State Bank n - Command to Bank m (different bank)
46
t
RC
has been met (if the previous state was Self Refresh).
HY[B/E]18L256160B[C/F]L-7.5
256-Mbit Mobile-RAM
TABLE 20
Note
1)2)3)4)5)6)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
6)
6)
6)
7)
7)
6)
6)
7)
8)
6)
6)
7)
7)
6)
6)
7)
9)
6)
6)
7)
7)
6)
Data Sheet
,
,
,
9)
9)
9)