W981216 WINBOND [Winbond], W981216 Datasheet - Page 33

• Manufacturer Part Number: W981216
• Description: 2M x 16 bit x 4 Banks SDRAM
• Manufacturer: WINBOND [Winbond]

Revision 1.0
Autoprecharge Timing ( Read Cycle )
(1) CAS Latency=2
(2) CAS Latency=3
( a ) burst length = 1
( b ) burst length = 2
( c ) burst length = 4
( d ) burst length = 8
( a ) burst length = 1
( b ) burst length = 2
( c ) burst length = 4
( d ) burst length = 8
Command
Command
Command
Command
Command
Command
Command
Command
DQ
Note )
DQ
DQ
DQ
DQ
DQ
DQ
DQ
Read
Read
Read
Read
Read
Read
Read
Read
0
When the Auto precharge command is asserted, the period from Bank Activate command to
the start of internal precgarging must be at least t
Read
Act
AP
AP
AP
1
Q0
AP
Q0
Q0
Q0
AP
t
represents the Bank Activate command.
2
RP
represents the start of internal precharging.
represents the Read with Auto precharge command.
t
RP
Act
Q1
Q1
Q1
Q0
Q0
Q0
Q0
t
3
RP
t
RP
Act
Act
AP
Q2
Q2
Q1
AP
Q1
Q1
4
- 33 -
Act
Q3
Q3
Q2
Q2
t
5
RP
2M x 16 bit x 4 Banks SDRAM
RAS
t
RP
(min).
Act
Q4
Q3
Q3
6
Act
Q5
Q4
7
Publication Release Date: March, 1999
AP
Q6
AP
Q5
8
Q7
Q6
t
9
RP
W981216AH
t
RP
Act
Q7
10
Act
11