HY5S5B6GLF-6 Datasheet, PDF (48/52 Pages) Hynix Semiconductor – 256Mbit (16Mx16bit) Mobile SDR Memory

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256Mbit (16Mx16bit) Mobile SDR Memory
HY5S5B6GLF(P)-xE Series
Clock Suspend
The Clock Suspend command is used to suspend the internal clock of Mobile SDRAM. The clock suspend operation
stops transmission of the clock to the internal circuits of the device during burst transfer of data to stop the operation
of the device. During normal access mode, CKE is keeping High. When CKE is low, it freezes the internal clock and ex-
tends data Read and Write operations. (See examples in next Figures)
CLK
Command
CKE
Internal CLK
DQ
Command
CKE
Internal CLK
DQ
RD
Masked by CKE
Frozen Int. CLK by CKE
(CKE = Fixed Low)
Q1
Q2
Q3 Q4
WR
Clock Suspend
Mode
Masked by CKE
D1 D2 D3
Frozen Int. CLK by CKE
(CKE = Fixed Low)
D4
Clock Suspend
Mode
Rev 1.0 / Apr. 2006
48