AS4C4M16S Datasheet, PDF (22/53 Pages) Alliance Semiconductor Corporation – Fully synchronous operation

FEBRUARY 2011
AS4C4M16S
Timing Waveforms
Figure 19. AC Parameters for Write Timing (Burst Length=4)
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t_CH
tCL
CKE
tIS
t_IS
t_IH
Begin Auto
Precharge Bank A
Begin Auto
Precharge Bank B
CS#
RAS#
CAS#
WE#
BA0,1
A10
A0-A9,
A11
DQM
DQ _Hi-Z
tIH
RAx
t_IS
RAx
RBx
CAx
RBx
tRCD
t_RC
Ax0 Ax1 Ax2 Ax3
RAy
CBx
RAy
tDAL
Bx0 Bx1 Bx2 Bx3
CAy
t_IS
Ay0
tIH
Ay1 Ay2
t_WR
Ay3
Activate
Command
Bank A
Write with Activate
Auto Precharge Command
Command Bank B
Bank A
Write with
Activate
Auto Precharge Command
Command
Bank A
Bank B
Write
Command
Bank A
Precharge
Command
Bank A
Don’t Care
21
Rev2.0 May 2014