EM638165 Etron Technology Inc., EM638165 Datasheet - Page 62

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

Figure 19.2. Full Page Write 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
T0
T 1 T2
t
CK2
Command
Bank A
CAx
Write
DAx
DAx+1
T3
Command
DAx+2 DAx+3 DAx-1
Activate
The burst counter wraps
from the highest order
page address back to zero
during this time interval
Bank B
RBx
RBx
T4
T5
T6
DAx
T7
(Burst Length=Full Page, CAS# Latency=2)
Full Page burst operation does
not terminate when the burst
length is satisfied; the burst counter
increments and continues bursting
beginning with the starting address.
DAx+1
T8
Command
Bank B
CBx
DBx
Write
T9
62
DBx+ 1 DBx+2 DBx+3
T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
DBx+ 4 DBx+ 5 DBx+ 6
Data is ignored
Burst Stop
Command
Precharge
Command
Bank B
Rev 0.6
EM638165
Command
Activate
Bank B
RBy
RBy
Feb. 2001