hy5ps1g831l-y6 Hynix Semiconductor, hy5ps1g831l-y6 Datasheet - Page 56

• Manufacturer Part Number: hy5ps1g831l-y6
• Description: Ddr2 Sdram - 1gb
• Manufacturer: Hynix Semiconductor

Rev 0.2 / Apr. 2004
2.11 No Operation Command
The No Operation command should be used in cases when the DDR2 SDRAM is in an idle or a wait state.
The purpose of the No Operation command (NOP) is to prevent the DDR2 SDRAM from registering any
unwanted commands between operations. A No Operation command is registered when CS is low with RAS,
CAS, and WE held high at the rising edge of the clock. A No Operation command will not terminate a previous
operation that is still executing, such as a burst read or write cycle.
2.12 Deselect Command
The Deselect command performs the same function as a No Operation command. Deselect command occurs
when CS is brought high at the rising edge of the clock, the RAS, CAS, and WE signals become don’t cares.
HY5PS1G431(L)F
HY5PS1G831(L)F
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