EM638165 Etron Technology Inc., EM638165 Datasheet - Page 58

• Manufacturer Part Number: EM638165
• Description: 4Mega x 16 Synchronous DRAM (SDRAM)
• Manufacturer: Etron Technology Inc.

Figure 18.1. Full Page Read Cycle
Preliminary
A0~A9,A11
BA0,1
RAS#
CAS#
DQM
CKE
CS#
WE#
CLK
A10
DQ
High
Hi-Z
Command
Activate
Bank A
RAx
RAx
Command
T0
Bank A
Read
t
RRD
CAx
T 1 T2
Command
t
Activate
CK1
Bank B
Ax
RBx
RBx
Ax+1 Ax+2
The burst counter wraps
from the highest order
page address back to zero
during this time interval
T3
T4
Ax-2 Ax-1
T5
T6
Ax
T7
(Burst Length=Full Page, CAS# Latency=1)
Command
Bank B
Ax+1 Bx
Read
CBx
T8
Full Page burst operation does not
terminate when the burst length is satisfied;
the burst counter increments and continues
bursting beginning wi t h the starting address.
T9
58
Bx+1
T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Bx+2
Bx+3 Bx+4
Bx+5
Bx+6 Bx+7
Burst Stop
Command
Precharge
Command
Bank B
t
Command
RP
Rev 0.6
Activate
Bank B
RBy
RBy
EM638165
Feb. 2001