em636165 Etron Technology Inc., em636165 Datasheet - Page 22

• Manufacturer Part Number: em636165
• Description: 1m X 16 Bit Synchronous Dram Sdram
• Manufacturer: Etron Technology Inc.

Timing Waveforms
Figure 1. AC Parameters for Write Timing
Etron Confidential
CLK
CKE
CS#
RAS#
CAS#
WE#
A11
A10
A0-A9
DQM
DQ
Hi-Z
t
CH
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10
t
t
IS
IS
Activate
Command
Bank A
t
CL
RBx
RAx
t
RCD
t
t
t
IH
IS
IH
Write with
Auto Precharge
Command
Bank A
t
CK
CAx
Ax0
Ax1
t
RC
Activate
Command
Bank B
RBx
RBx
Ax2
Ax3
Begin Auto
Precharge Bank A
Write with
Auto Precharge
Command
Bank B
CBx
Bx0
t
DAL
Bx1
RAy
RAy
Bx2
Activate
Command
Bank A
22
(Burst Length=4, CAS# Latency=2)
t
IS
Bx3
T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Begin Auto
Precharge Bank B
CAy
Ay0
Write
Command
Bank A
Ay1
t
IH
Ay2
Ay3
t
WR
Precharge
Command
Bank A
t
RP
Activate
Command
Bank A
RAz
RAz
Rev. 3.4
t
RRD
EM636165
t
IS
Activate
Command
Bank B
RBy
RBy
“H” or “L”
Apr. 2008