W986408CH Datasheet, PDF (24/44 Pages) Winbond – 2M x 8BIT x 4 BANKS SDRAM

W986408CH
2M x 8 bit x 4 Banks SDRAM
Interleaved Bank Write (Burst Length=8, Autoprecharge)
CLK
(CLK = 100 MHz)
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
CS
RAS
CAS
tRC
tRAS
tRP
tRAS
tRAS
tRP
WE
BS0
BS1
A10
tRCD
RAa
A0-A9, _RAa
A11
DQM
CKE
DQ
CAx
ax0 ax1
tRRD
Bank #0 Active
Bank #1
Bank #2
Idle
Bank #3
Write
tRCD
RBb
RBb
CBy
ax4 ax5 ax6 ax7 by0 by1 by2 by3
tRRD
Active
AP*
Write
* AP is the internal precharge start timing
tRCD
RAb
RAc
CAz
by4 by5 by6 by7 CZ0 CZ1 CZ2
Active
Write
AP*
Revision 1.0
- 24 -
Publication Release Date: March, 1999