w9425g8eh Winbond Electronics Corp America, w9425g8eh Datasheet - Page 29

• Manufacturer Part Number: w9425g8eh
• Description: 8m ? 4 Banks ? 8 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

(16) t
(17) A maximum of eight AUTO REFRESH commands can be posted to any given DDR SDRAM device.
(18) t
(19) For command/address input slew rate ≥1.0 V/nS.
(20) For command/address input slew rate ≥0.5 V/nS and <1.0 V/nS.
(21) For CLK & CLK slew rate ≥1.0 V/nS (single--ended).
(22) These parameters guarantee device timing, but they are not necessarily tested on each device. They may be
(23) Slew Rate is measured between V
guaranteed by device design or tester correlation.
AC
DAL
and t
= (t
0 V Differential
WR
DQSCK
/t
CK
V
) + (t
depend on the clock jitter. These timing are measured at stable clock.
ID(AC)
CLK
CLK
V
V
V
ISO
SS
SS
RP
V
/t
ICK
CK
V
X
)
OH
V
ISO(min)
(ac) and V
V
V
ICK
X
OL
- 29 -
(ac).
V
X
V
ISO(max)
V
ICK
Publication Release Date: Jul. 04
V
X
V
ICK
V
X
V
ID(AC)
Revision A01
,
2008