m5m4v4s40ctp-12 Mitsumi Electronics, Corp., m5m4v4s40ctp-12 Datasheet - Page 25

• Manufacturer Part Number: m5m4v4s40ctp-12
• Description: 2-bank 131072-word 16-bit Synchronous Dram
• Manufacturer: Mitsumi Electronics, Corp.

CLK SUSPEND
CKE=L the next internal CLK is suspended. CLK suspend is used to power down, suspend the outputs, and
to suspend the inputs. Except during the self-refresh mode, CKE is a synchronous input. CLK suspend can
be performed either when the banks are active or idle; however, all commands issued in the following cycle
are ignored.
SDRAM (Rev. 0.3)
Feb ‘97 Preliminary
CKE controls the internal CLK in the following cycle. The figure below shows how CKE works. When
Command
Command
Command
CLK
CKE
CKE
CLK
CKE
DQ
4M (2-BANK x 131072-WORD x 16-BIT) Synchronous DRAM
ext.CLK
Write
int.CLK
PRE
ACT
CKE
D0
D1
MITSUBISHI ELECTRIC
DQ Suspend by CKE
Power Down by CKE
D2
M5M4V4S40CTP-12, -15
NOP
NOP
D3
READ
NOP
NOP
Standby Power Down
Active Power Down
NOP NOP NOP
NOP NOP NOP
Q0
NOP NOP
NOP NOP
Q1
MITSUBISHI LSIs
Q2
Q3
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