EM639165 Etron Technology Inc., EM639165 Datasheet - Page 19

• Manufacturer Part Number: EM639165
• Description: 8Mega x 16bits SDRAM
• Manufacturer: Etron Technology Inc.

Preliminary
[ Read Interrupted by Precharge ]
Burst read operation can be interrupted by precharge of the
same bank . READ to PRE interval is minimum 1 CLK. A PRE
command to output disable latency is equivalent to the /CAS
CL=3
CL=2
Command
Command
Command
Command
Command
Command
CLK
DQ
DQ
DQ
DQ
DQ
DQ
Read Interrupted by Precharge (BL=4)
READ
READ
READ PRE
READ
READ
READ PRE
PRE
PRE
Q0
Q0
Q0
19
PRE
PRE
Q1
Q0
Q0
Q0
Q1
Latency. As a result, READ to PRE interval determines valid
data length to be output. The figure below shows examples of
BL=4.
Q1
Q1
Q2
Q2
Rev 1.0
EM639165
Feb. 2001