MOSEL VITELIC
V54C3128804VAT
4.2 Minimum Read to Write Interval
(Burst Length = 4, CAS latency = 2)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK
tDQW
DQM
tDQZ
1 Clk Interval
READ A
BANK A
ACTIVATE
NOP
NOP
WRITE A
NOP
NOP
NOP
NOP
COMMAND
Must be Hi-Z before
the Write Command
CAS latency = 2
DIN A
DIN A
DIN A
DIN A
3
0
1
2
tCK2, I/O’s
: “H” or “L”
4.3 Non-Minimum Read to Write Interval
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK
tDQW
DQM
tDQZ
NOP
READ A
NOP
NOP
READ A
NOP
WRITE B
NOP
NOP
COMMAND
CAS latency = 2
DOUT A
DOUT A
DOUT A
DIN B
DIN B
DIN B
DIN B
DIN B
DIN B
0
1
0
1
2
tCK1, I/O’s
Must be Hi-Z before
the Write Command
CAS latency = 3
0
0
1
2
tCK2, I/O’s
: “H” or “L”
V54C3128804VAT Rev. 1.4 November 2000
17