MOSEL VITELIC
V54C3128804VAT
1. Bank Activate Command Cycle
(CAS latency = 3)
T0
T1
T
T
T
T
T
CLK
. . . . . . . . . .
Bank A
Row Addr.
Bank A
Col. Addr.
Bank A
Row Addr.
Bank B
Row Addr.
. . . . . . . . . .
ADDRESS
tRCD
tRRD
Write A
with Auto
Precharge
Bank B
Activate
Bank A
Activate
Bank A
Activate
. . . . . . . . . .
NOP
NOP
NOP
COMMAND
: “H” or “L”
tRC
2. Burst Read Operation
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK
READ A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
COMMAND
CAS latency = 2
DOUT A0
DOUT A1
DOUT A0
DOUT A2
DOUT A1
DOUT A3
DOUT A2
tCK2, I/O’s
CAS latency = 3
DOUT A3
tCK3, I/O’s
V54C3128804VAT Rev. 1.4 November 2000
15