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FMS1616LAX-XXEX Datasheet - Page 42

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DEEP POWER DOWN MODE ENTRY
The Deep Power Down Mode is entered by having burst termination command, while CKE is low. The Deep Power Down
Mode has to be maintained for a minimum of 100us.
The following diagram illustrates Deep Power Down mode entry.
CLK
CKE
Precharge
Command
NOP
All Bank
Precharge
If needed
DEEP POWER DOWN MODE EXIT SEQUENCE
The Deep Power Down Mode is exited by asserting CKE high.
After the exit, the following sequence is needed to enter a new command
1. Maintain NOP input conditions for a minimum of 100us
2. Issue precharge commands for all banks of the device
3. Issue 8 or more auto refresh commands
4. Issue a mode register set command to initialize the mode register
5. Issue a extended mode register set command to initialize the extended mode register
The following timing diagram illustrates deep power down exit sequence
CLK
CKE
Command
Address
100 us
Deep Power Down
Exit
Rev0.3, May., 2010
t
RP
Burst
NOP
NOP
Terminate
Deep Power Down
Entry
Figure 29. Deep Power Down Mode Entry
Precharge
NOP
AREF
All Bank
A10
t
RP
Precharge
All Bank
Figure 30. Deep Power Down Mode Exit
FMS1616LAx-xxEx
NOP
NOP
Active
MRS
EMRS
Bank a
Key
Key
Row
Normal
Extended
Row Active
MRS
MRS
A Bank

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