AS4C4M32S Datasheet, PDF (21/46 Pages) Alliance Semiconductor Corporation – Programmable Mode

Timing Waveforms
Figure 19. AC Parameters for Write Timing (Burst Length=4)
AS4C4M32S
CLK
CKE
CS#
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
tCH
tCL
tIS
tIS
tIH
Begin Auto
Precharge Bank A
Begin Auto
Precharge Bank B
RAS#
CAS#
WE#
BA0,1
A10
A0-A9,
A11
DQM
DQ
Hi-Z
tIH
RAx
tIS
RAx
CAx
RBx
RBx
CBx
RAy
RAy
tRCD
tRC
Ax0 Ax1 Ax2 Ax3
Activate
Command
Bank A
Write with
Auto Precharge
Command
Bank A
Activate
Command
Bank B
tDAL
Bx0 Bx1 Bx2 Bx3
Write with
Auto Precharge
Command
Bank B
Activate
Command
Bank A
CAy
tIS
tIH
Ay0 Ay1
Ay2
tWR
Ay3
Write
Command
Bank A
Precharge
Command
Bank A
Don’t Care
Alliance Memory Confidential
20
Rev. 3.0 May. /2014