EtronTech
EM638325
2Mega x 32 SDRAM
Figure 2. AC Parameters for Read Timing (Burst Length=2, CAS# Latency=2)
T0
T 1 T2
T3
T4
T5
T6
T7
T8
T9
T10
T 11 T12
T13
CLK
CKE
tCK2
tIS
tCH tCL
Begin AutoPrecharge
Bank B
tIH
tIH
tIS
CS#
RAS#
CAS#
WE#
BS0,1
A10
tIH
RBx
RBx
RAx
RAx
RAy
RAy
tIS
A0-A11
CBx
CAx
tRRD
tRAS
tRC
tHZ
DQM
tAC2
tLZ
tAC2
Ax0
tRP
tRCD
Hi-Z
Bx0
Bx1
DQ
Ax1
tHZ
tOH
Activate
Command
Bank A
Read
Command
Bank A
Activate
Command
Bank B
Read with
Precharge
Command
Bank A
Activate
Command
Bank A
Auto Precharge
Command
Bank B
Preliminary
21
Rev 1.4
Oct. 2005