HYB18L512320BF-7.5 QIMONDA [Qimonda AG], HYB18L512320BF-7.5 Datasheet - Page 11

• Manufacturer Part Number: HYB18L512320BF-7.5
• Description: DRAMs for Mobile Applications 512-Mbit SDR Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

10) May or may not be bank-specific; if multiple banks are to be precharged, each must be in a valid state for precharging.
11) Not bank-specific; BURST TERMINATE affects the most recent READ or WRITE burst, regardless of bank.
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:Idle:The bank has been precharged, and
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.
Rev.1.22, 2007-08
03292006-D7GM-ZBSS
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.
t
Precharge disabled, and has not yet terminated orbeen terminated.Write:A WRITE burst has been initiated, with Auto Precharge disabled,
and has not yet terminated or been terminated.Read with AP Enabled:Starts with registration of a READ command with Auto Precharge
enabled and ends when
WRITE command with Auto Precharge enabled and ends when
with Auto Precharge disabled.
RCD
has been met. No data bursts/accesses and no register accesses are in progress.Read:A READ burst has been initiated, with Auto
H
L
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
CS
t
X
H
X
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
RP
RAS CAS
has been met. Once
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
t
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)
RP
is met, the bank is in the idle state.Write with AP Enabled:Starts with registration of a
Current State Bank n - Command to Bank m (different bank)
t
11
RP
t
RP
has been met. Once
has been met.Row Active:A row in the bank has been activated, and
t
RC
has been met (if the previous state was Self Refresh).
t
RP
is met, the bank is in the idle state.
HY[B/E]18L512320BF-7.5
512-Mbit Mobile-RAM
Internet Data Sheet
Notes
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)7)
1)2)3)4)5)6)7)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)7)
1)2)3)4)5)6)7)8)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)7)
1)2)3)4)5)6)7)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)7)9)
1)2)3)4)5)6)7)8)9)
1)2)3)4)5)6)
1)2)3)4)5)6)
1)2)3)4)5)6)7)9)
1)2)3)4)5)6)7)9)
1)2)3)4)5)6)
TABLE 8