HYB18L256169BF QIMONDA [Qimonda AG], HYB18L256169BF Datasheet - Page 39

• Manufacturer Part Number: HYB18L256169BF
• Description: 256-Mbit Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

3) Current state definitions:
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
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
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
Table 16
CKEn-1
L
L
H
H
1) CKEn is the logic state of CKE at clock edge n; CKEn-1 was the state of CKE at the previous clock edge.
2) Current state is the state immediately prior to clock edge n.
3) COMMAND n is the command registered at clock edge n; ACTION n is a result of COMMAND n.
4) All states and sequences not shown are illegal or reserved.
5) DESELECT or NOP commands should be issued on any clock edges occurring during
6) Exit from DEEP POWER DOWN requires the same command sequence as for power-up initialization.
Data Sheet
Idle:
Row Active:
Read:
Write:
Read with AP
Enabled:
Write with AP
Enabled:
only.
READs or WRITEs with Auto Precharge disabled.
command to bank m.
CKEn
L
H
L
H
Truth Table - CKE
The bank has been precharged, and
A row in the bank has been activated, and
accesses are in progress.
terminated.
A WRITE burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
Starts with registration of a READ command with Auto Precharge enabled and ends when
met. Once
Starts with registration of a WRITE command with Auto Precharge enabled and ends when
met. Once
A READ burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
Current State
Power Down
Self Refresh
Clock Suspend
Deep Power Down
Power Down
Self Refresh
Clock Suspend
Deep Power Down
All Banks Idle
Bank(s) Active
All Banks Idle
Read / Write burst
t
t
RP
RP
is met, the bank is in the idle state.
is met, the bank is in the idle state.
see
X
X
X
Command
X
X
X
DESELECT or NOP
DESELECT or NOP
DESELECT or NOP
DESELECT or NOP
AUTO REFRESH
(valid)
Table 14
t
RP
39
has been met.
t
RCD
and
has been met. No data bursts/accesses and no register
Table 15
Action
Maintain Power Down
Maintain Self Refresh
Maintain Clock Suspend
Maintain Deep Power
Down
Exit Power Down
Exit Self Refresh
Exit Clock Suspend
Exit Deep Power Down
Enter Precharge Power
Down
Enter Active Power Down
Enter Self Refresh
Enter Clock Suspend
HY[B/E]18L256169BF-7.5
t
RC
256-Mbit Mobile-RAM
period.
Functional Description
02032006-MP0M-7FQG
Rev. 1.02, 2006-12
t
t
RP
RP
Notes
1)2)3)4)
1) to 4)
1) to 4)
1) to 4)
1) to 4)
1) to 5)
1) to 4)
1) to 4), 6)
1) to 4)
1) to 4)
1) to 4)
1) to 4)
1) to 4)
has been
has been