W981216 WINBOND [Winbond], W981216 Datasheet - Page 35

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

Revision 1.0
Autoprecharge timing ( Write Cycle )
(1) CAS Latency=2
(2) CAS Latency=3
( b ) burst length = 2
( d ) burst length = 8
( b ) burst length = 2
( d ) burst length = 8
( a ) burst length = 1
( c ) burst length = 4
( a ) burst length = 1
( c ) burst length = 4
Command
Command
Command
Command
Command
Command
Command
Command
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
Note )
Write
Write
Write
Write
Write
Write
Write
Write
D0
D0
D0
D0
D0
D0
D0
D0
0
command to the start of internal precgarging must be at least tRAS(min)..
When the Auto precharge command is asserted, the period from Bank Activate
Write
t
t
Act
WR
WR
AP
D1
D1
D1
D1
D1
D1
AP
AP
1
t
t
WR
WR
represents the Bank Activate command.
represents the Write with Auto precharge command.
D2
D2
D2
D2
represents the start of internal precharging.
AP
AP
t
2
RP
t
RP
D3
D3
D3
D3
Act
t
3
RP
t
t
t
RP
WR
WR
D4
D4
Act
AP
Act
AP
4
- 35 -
D5
D5
Act
t
2M x 16 bit x 4 Banks SDRAM
5
RP
t
RP
D6
D6
Act
6
D7
D7
Publication Release Date: March, 1999
Act
7
t
t
WR
WR
AP
AP
8
W981216AH
t
9
RP
t
RP
Act
10
Act
11