EDL1216CASA-10-E 查看數據表（PDF） - Elpida Memory, Inc

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EDL1216CASA-10-E

128M bits Mobile RAM

Elpida Memory, Inc 

EDL1216CASA

Auto refresh command (/CS, /RAS, /CAS = Low, /WE, CKE = High)

This command is a request to begin the Auto refresh operation. The refresh address is generated internally.

Before executing Auto refresh, all banks must be precharged. After this cycle, all banks will be in the idle

(precharged) state and ready for a row activate command. During tRC1 period (from refresh command to refresh or

activate command), the Mobile RAM cannot accept any other command

CLK

CKE H

/CS

/RAS

/CAS

/WE

BA0, BA1

A10

Add

Auto refresh command

Self refresh entry command (/CS, /RAS, /CAS, CKE = Low, /WE = High)

After the command execution, self refresh operation continues while CKE remains low. When CKE goes high, the

Mobile RAM exits the self refresh mode. During self refresh mode, refresh interval and refresh operation are

performed internally, so there is no need for external control. Before executing self refresh, all banks must be

precharged.

CLK

CKE

/CS

/RAS

/CAS

/WE

BA0, BA1

A10

Add

Self refresh entry command

Power down entry command (/CS, CKE = Low, /RAS, /CAS, /WE = High)

After the command execution, power down mode continues while CKE remains low. When CKE goes high, the

Mobile RAM exits the power down mode. Before executing power down, all banks must be precharged.

CLK

CKE

/CS

/RAS

/CAS

/WE

BA0, BA1

A10

Add

Power down entry command

Data Sheet E0195E30 (Ver. 3.0)

12

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