IC42S16800 ICSI [Integrated Circuit Solution Inc], IC42S16800 Datasheet - Page 22

• Manufacturer Part Number: IC42S16800
• Description: 4(2)M x 8(16) Bits x 4 Banks (128-MBIT) SYNCHRONOUS DYNAMIC RAM
• Manufacturer: ICSI [Integrated Circuit Solution Inc]

IC42S81600/IC42S81600L
IC42S16800/IC42S16800L
Write with Auto Precharge
During a write cycle, the auto precharge starts at the timing that is equal to the value of t
input to the device.
WRITE with AUTO PRECHRGE
In summary, the auto precharge cycle begins relative to a reference clock that indicates the last data word is valid. In the
table below, minus means clocks before the reference; plus means clocks after the reference.
22
Remark WRITA means WRITE with AUTO Precharge
CAS latency =
DQ
Command
CLK
Command
CAS latency =
DQ
2
3
CAS
CAS
CAS
CAS
CAS latency
T0
WRITA B
WRITA B
DB0
DB0
2
3
T1
DB1
DB1
T
Read
2
-1
-2
DB2
DB2
T3
+ t
+ t
DB3
DB3
DPL
DPL
AUTO PRECHARGE starts
AUTO PRECHARGE starts
Write
t
t
DPL
DPL
((min.)
((min.)
T4
T5
Integrated Circuit Solution Inc.
DPL
(min.) after the last data word
T6
Hi - Z_
Hi - Z
Burst lengh = 4
T7
DR023-0E 6/11/2004
T8