is42s16800a1 Integrated Silicon Solution, Inc., is42s16800a1 Datasheet - Page 22

• Manufacturer Part Number: is42s16800a1
• Description: 8meg 128-mbit Synchronous Dram
• Manufacturer: Integrated Silicon Solution, Inc.

IS42S16800A1
22
Burst Read Interrupted by Precharge
Precharge Termination
The Precharge Command may be used to terminate either a burst read or burst write operation. When the Precharge command
is issued, the burst operation is terminated and bank precharge begins. For burst read operations, valid data will continue to
appear on the data bus as a function of CAS Latency.
CK
COMMAND
CAS latency = 2
t
CAS latency = 3
t
CK2
CK3
,
,
DQs
DQs
READ Ax
T0
0
T1
NOP
T2
DOUT Ax
NOP
0
Integrated Silicon Solution, Inc. — www.issi.com —
T3
DOUT Ax
DOUT Ax
NOP
1
0
Precharge A
T4
DOUT Ax
DOUT Ax
2
1
*
‡
t
t
See the Clock Frequency and Latency table.
Bank A can be reactivated at completion of t
T5
RP
RP
DOUT Ax
DOUT Ax
NOP
(Burst Length = 8, CAS Latency = 2, 3)
‡
is a function of clock cycle time and speed sort.
N
t
RP
3
2
‡
T6
*
DOUT Ax
NOP
3
©
T7
*
NOP
ISSI
T8
NOP
1-800-379-4774
RP
.
05/01/06
Rev. 00B
®