EM639325
EtronTech
Timing Waveforms
Figure 20. AC Parameters for Write Timing
(Burst Length=4)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
CKE
tCH
tCL
tIS
tIS
Begin Auto
Precharge Bank A
Begin Auto
Precharge Bank B
tIH
CS#
RAS#
CAS#
WE#
BA0,1
A10
tIH
RAx
RBx
RBx
RAy
RAy
tIS
A0-A9,
A11
RAx
CAx
CBx
CAy
DQM
DQ
tRCD
tDAL
tIS
tRC
tWR
tIH
Hi-Z
Ax0
Ax1
Ax2
Ax3
Bx0
Bx1
Bx2
Bx3
Ay0
Ay1
Ay2
Ay3
Write with
Activate
Command
Bank A
Write with
Activate
Auto Precharge Command
Activate
Command
Bank A
Precharge
Command
Bank A
Write
Command
Bank A
Auto Precharge
Command
Bank B
Command
Bank A
Bank B
Don’t Care
Rev. 2.1
22
Aug. /2015
ETRON [ ETRON TECHNOLOGY, INC. ]
