參數(shù)資料
型號(hào)： HYB25L512160AC
廠(chǎng)商： INFINEON TECHNOLOGIES AG
英文描述： 512MBit Mobile-RAM
中文描述： 512兆移動(dòng)RAM
文件頁(yè)數(shù)： 44/50頁(yè)
文件大小： 1335K
代理商： HYB25L512160AC
HYB25L512160AC–7.5
512MBit Mobile-RAM
Functional Description
Data Sheet
44
Rev. 1.3, 2004-04
10212003-BSPE-77OL
3) Current state definitions:
Idle:
Row Active:
The bank has been precharged, and
t
RP
has been met.
A row in the bank has been activated, and
t
RCD
has been met. No data bursts/accesses and no register
accesses are in progress.
A READ burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
A WRITE burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
Read:
Write:
Read with AP
Enabled:
Starts with registration of a READ command with Auto Precharge enabled and ends when
t
RP
has been
met. Once
t
RP
is met, the bank is in the idle state.
Write with AP
Enabled:
Starts with registration of a WRITE command with Auto Precharge enabled and ends when
t
RP
has been
met. Once
t
RP
is met, the bank is in the idle state.
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 with Auto Precharge disabled.
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.
Table 16
CKEn-1
L
Truth Table - CKE
CKEn
Current State
L
Power Down
Self Refresh
Clock Suspend
Deep Power Down
H
Power Down
Self Refresh
Clock Suspend
Deep Power Down
L
All Banks Idle
Bank(s) Active
All Banks Idle
All Banks Idle
Read / Write burst
H
Command
X
X
X
X
DESELECT or NOP
DESELECT or NOP
X
X
DESELECT or NOP
DESELECT or NOP
AUTO REFRESH
BURST STOP
(valid)
see
Table 14
and
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 Deep Power Down
Enter Clock Suspend
Notes
1)2)3)4)
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
t
RC
period.
1) to 4)
1) to 4)
1) to 4)
L
1) to 4)
1) to 5)
1) to 4)
1) to 4)
H
1) to 4)
1) to 4)
1) to 4)
1) to 4)
1) to 4)
H
1) to 4)
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